Document Outline

COVER
FEATURES
ORDERING INFORMATION
BLOCK DIAGRAM
PIN CONFIGURATION (Top View)
PIN FUNCTIONS
1. INITIAL STATUS SETTING
- 1.1 Initial Status Setting
- 1.2 Application Block Diagram
- 1.3 Display with RGB + VC1 + VC2 Pins
  - 1.3.1 Character signal output with output select option A
  - 1.3.2 Character signal output with output select option B
  - 1.3.3 Character signal output with output select option C
  - 1.3.4 Displaying characters specified by VC2
2. COMMAND
- 2.1 Command Format
- 2.2 Command List
- 2.3 Power-ON Clear Function
3. DETAILS OF COMMANDS
- 3.1 Video RAM Batch Clear Command
- 3.2 Display Control Command
- 3.3 Background Color/Frame Color Control Command
- 3.4 3-Channel Independent Display ON/OFF Command
- 3.5 Character Color Reverse ON/OFF Command
- 3.6 Blue Back ON/OFF Command
- 3.7 Character Address Bank Select Command
- 3.8 Output Switch Control Command
- 3.9 Character Display Position Control Command
- 3.10 Write Address Control Command
- 3.11 Output Pin Control Command
- 3.12 Character Size Control Command
- 3.13 3-Channel Background Control Command
- 3.14 Initial Status Setting Command
- 3.15 Display Character Control Command
- 3.16 Test Mode
4. TRANSFERRING COMMANDS
- 4.1 1-Byte Command
- 4.2 2-Byte Command
- 4.3 2-Byte Successive Commands
- 4.4 Successive Input of Command
  - 4.4.1 When 2-byte successive command end code is not used
  - 4.4.2 When 2-byte successive command end code is used
5. CHARACTER PATTERNS
6. ELECTRICAL CHARACTERISTICS
7. APPLICATION CIRCUIT EXAMPLE
8. PACKAGE DRAWINGS
9. RECOMMENDED SOLDERING CONDITIONS

1997

DATA SHEET

The mark

shows major revised points.

PD6466

MOS INTEGRATED CIRCUIT

Document No. S10991EJ2V2DS00 (2nd edition)
Date Published November 1998 N CP(K)
Printed in Japan

ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER,

12-ROW, 24-COLUMN, CAMERA-CONTAINED VCR

The information in this document is subject to change without notice.

The

PD6466 is a CMOS LSI for on-screen character display, and can be used in combination with a microcomputer

to display the tape counter, time, and date in the view finder of a video camera, or the time of a video tape, messages

such as dates on pictures, and channel number on a TV screen.

Characters are displayed in 12 (horizontal) by 18 (vertical) dots. Two or more characters can be combined to display

Kanji (Japanese characters) and symbols. This LSI supports color view finders and is provided with three sets of

character output signals (RGB output: for color view finder, V

output: for recording (or monitor pin), V

output: for

monitor pin (or recording)).

In addition, the

PD6466 is also equipped with a power-ON clear function and a video RAM batch clear command

so that it can mitigate the workload of the microcomputer.

The command format of this LSI is identical to that of the existing models, the

PD6461 and 6462, and therefore,

the

PD6466 is compatible with the existing models, and the software resources for the existing models can be used.

FEATURES

· Number of display characters

: 12 rows, 24 columns (288 characters)

· Types of character

: 512 types (ROM). Changeable by using mask code option.

· Character size

: Can be expanded up to four-fold in vertical and horizontal directions

independently, in units of lines.

· Number of character colors

: 8 colors

· Framing

: Framing or no framing, or white or black framing selectable in screen units.

· Dot matrix

: 12 (horizontal)

18 (vertical) dot configuration. No gap between adjacent

characters.

· Blinking

: Blinking can be turned ON/OFF in character units. The blinking ratio is 1:1.

The blinking frequency can be selected from about 1 Hz, about 2 Hz, and

about 0.5 Hz in screen unit.

· Character color reversing function : The color of the character and that of the background can be reversed.

· Character left and right reverse

: Left and right can be reversed for display in character units.

· Background

: No background, blank background, or filled background selectable in screen

units.

· Blue back function

: Blue or white can be selected as the background.

· Signal output

: 3 sets (output (1) R, G, B + BLK/V

+ V

BLK1

+ V

BLK2

and output (2) R +

BLK

/B + B

BLK

/G + G

BLK

selectable by command)

When output (1) is selected, V

and V

outputs can be selected from three

types.

· Video RAM data clear

: Implemented by video RAM batch clear command or by clear function on

power-ON.

· Interface with microcomputer

: 8-bit variable word length serial input (LSB first/MSB first selectable by

command)

· Supply voltage

: Supports low voltage (2.7 to 5.5 V)

· Process

: CMOS low power consumption

PD6466

PIN FUNCTIONS

Pin No.

Note 1

Pin Name

Note 2

Function

Symbol

Note 2

CLK

Clock input

This pin inputs a clock for reading data. Data input to the DATA pin

is read at the rising edge of this clock.

Chip select input

Serial transfer can be accepted if this pin is made low.

3 (4)

DATA

Serial data input

This pin inputs control data. Data is read in synchronization with the

clock input to the CLK pin.

4 (5)

PCL

Power-ON clear

This pin, when high, initializes the internal circuitry of the IC on power

application.

5 (6)

Power supply

This pin supplies power.

6 (7)

CMDCT

Command specification

This pin selects whether a command is input with the LSB first or MSB

select

first.

When this pin is low, the command is input with the LSB first; when

it is high, the command is input with the MSB first. To input the

command with the LSB first, this pin may be opened.

7 (8)

OSC

OUT

LC oscillation I/O

These are an input and an output pin for an oscillation circuit that

8 (9)

OSC

(OSC

: external clock

generates a dot clock.

input)

A coil and capacitor for oscillation are connected to these pins. (If

the input of an external clock is selected by the initial status setting

command, an external clock (clock synchronized with Hsync) is input.

OSC

OUT

is opened at this time.)

9 (10)

TEST

Test pin

This pin is used to test the IC. Normally, connect this pin to GND.

When the TEST pin is connected to GND, the test mode is not set.

10 (11)

GND

Ground pin

Connect this pin to GND of the system.

11 (14)

BLK1

Blanking signal output 1

This pin outputs a blanking signal to cut the video signal.

It supports output of V

, and is high-active.

(If RGB compatible blanking is selected by a command, this pin

outputs the logical sum of R

BLK

, G

BLK

, and B

BLK

12 (15)

Character signal output 1

This pin outputs a character signal, and is high-active.

(If RGB compatible blanking is selected by a command, this pin

outputs the logical sum of V

, V

, and V

13 (16)

BLK2

Blanking signal output 2

This pin outputs a blanking signal to cut the video signal. It supports

BLK

)

(blanking R)

output of V

, and is high-active.

(This pin outputs a blanking signal supporting output of V

and is

high-active.)

14 (17)

Character signal output 2

This pin outputs a character signal, and is high-active.

BLK

)

(blanking G)

(This pin outputs a blanking signal supporting output of V

and is

high-active.)

15 (18)

BLK

Blanking signal output

This pin outputs a blanking signal to cut the video signal. It supports

BLK

)

(blanking B)

output of V

, V

, and V

, and is high-active (this pin outputs a blanking

signal supporting output of V

and is high-active).

16 (19)

Character signal output

This pin outputs a character signal, and is high-active.

17 (20)

18 (21)

19 (23)

Vsync

Vertical sync signal input

This pin inputs a vertical sync signal. Input a negative sync signal.

20 (24)

Hsync

Horizontal sync signal input

This pin inputs a horizontal sync signal. Input a negative sync signal.

(3, 12, 13, 22)

N.C.

Vacant

Vacant pin

Notes 1.

( ): Pin numbers of

PD6466GT-xxx

Signals in ( ) are set by the initial status setting command (RGB + RGB compatible blanking).

PD6466

CONTENTS

INITIAL STATUS SETTING ................................................................................................................. 9

1.1

Initial Status Setting ................................................................................................................. 9

1.2

Application Block Diagram .................................................................................................... 11

1.3

Display with RGB + V

+ V

Pins ........................................................................................ 12

1.3.1 Character signal output with output select option A ..................................................................... 15

1.3.2 Character signal output with output select option B ..................................................................... 16

1.3.3 Character signal output with output select option C ..................................................................... 17

1.3.4 Displaying characters specified by V

.......................................................................................... 18

COMMAND .........................................................................................................................................19

2.1

Command Format ................................................................................................................... 19

2.2

Command List ......................................................................................................................... 19

2.3

Power-ON Clear Function ...................................................................................................... 21

DETAILS OF COMMANDS ................................................................................................................ 22

3.1

Video RAM Batch Clear Command ....................................................................................... 22

3.2

Display Control Command ..................................................................................................... 23

3.3

Background Color/Frame Color Control Command ........................................................... 26

3.4

3-Channel Independent Display ON/OFF Command .......................................................... 27

3.5

Character Color Reverse ON/OFF Command ..................................................................... 28

3.6

Blue Back ON/OFF Command ............................................................................................... 30

3.7

Character Address Bank Select Command ......................................................................... 31

3.8

Output Switch Control Command ......................................................................................... 32

3.9

Character Display Position Control Command ................................................................... 34

3.10 Write Address Control Command ......................................................................................... 36

3.11 Output Pin Control Command ............................................................................................... 37

3.12 Character Size Control Command ........................................................................................ 38

3.13 3-Channel Background Control Command ......................................................................... 39

3.14 Initial Status Setting Command ............................................................................................ 43

3.15 Display Character Control Command .................................................................................. 45

3.16 Test Mode .................................................................................................................................48

TRANSFERRING COMMANDS ........................................................................................................ 49

4.1

1-Byte Command .....................................................................................................................49

4.2

2-Byte Command .....................................................................................................................49

4.3

2-Byte Successive Commands ............................................................................................. 50

4.4

Successive Input of Command ............................................................................................. 51

4.4.1 When 2-byte successive command end code is not used ........................................................... 51

4.4.2 When 2-byte successive command end code is used ................................................................. 51

CHARACTER PATTERNS ................................................................................................................. 52

ELECTRICAL CHARACTERISTICS ................................................................................................. 60

APPLICATION CIRCUIT EXAMPLE ................................................................................................. 65

PD6466

1. INITIAL STATUS SETTING

1.1 Initial Status Setting

The

PD6466 selects the following parameters that are selected by mask code options with the

PD6461 and 6462,

by using an initial status setting command.

Parameter

Selected by:

(1)

Dot clock

LC oscillation

External clock input

(2)

Vertical display start position

3-row unit setting

9-row unit setting

(3)

Pin selection

RGB + V

+ V

RGB + RGB compatible BLK

(RGB + 3BLK)

(4)

Output selection

Option A

Option B

Option C

(5)

Character color reversal

Black character

White character

specification selection

(6)

Function selection

Character blinking

Character left/right reversal

(1) Dot clock

To select a dot clock for character display. If an external clock input is selected, refer to External Clock Input

in 6. ELECTRICAL CHARACTERISTICS.

(2) Vertical display start position

To select the setting accuracy of the vertical display start position of the character display area. In 3-row units,

the vertical display start position can be set more finely than in 9-row units.

(3) Pin selection

To select the setting of the output pins.

When RGB + V

+ V

is selected, character signals are output from pins V

, V

BLK

, V

, BLK1, V

and BLK2. When RGB + 3BLK is selected, character signals are output from pins V

, V

, R

BLK

, G

BLK

, B

BLK

, and BLK1.

When RGB + V

+ V

is selected with a video camera with a color view finder, colored characters can be

displayed in the view finder. When RGB + 3BLK is selected, character signals can be separated color

specification.

(4) Output selection

To set the output format of the character signal where the setting of the output pin is RGB + V

+ V

(setting

the output format of the character signal is invalid where the setting of the output pin is RGB + 3BLK).

When an on-screen character display IC is used in a video camera, some items of information (such as date

and title) are displayed on the video tape, and the others (such as battery alarm, focus, and counter indication)

are only displayed in the view finder. The

PD6466 can select these items of information in row or half-row

units by using the output pin. Select the output format from three types: option A, option B, and option C (when

3BLK is selected, however, be sure to select option B).

(5) Character color reversal specification selection

To select the specifications when the character color is reversed (valid only for RGB output).

Black character: Outputs an area with dots in black and prohibits framing.

White character: Outputs an area with dots in white and prohibits framing.

PD6466

1.2 Application Block Diagram

Example of application in a video camera (1) (in the case of RGB + V

+ V

)

(When V

, V

BLK

, V

, BLK1, V

, and BLK2 pins are used)

DATA

CLK

PCL

Hsync

Vsync

RGB

Character

mixing circuit

Video

Video+character

Character

mixing circuit

Color view finder

Recording block

(deck block)

PD6466

RGB : V

, V

BLK

: V

, BLK1 V

: V

, BLK2

Character

mixing circuit

Monitor pin block

(video signal output)

Microcontroller

Example of application in a video camera (2) (RGB + 3BLK (RGB compatible BLK))

(When V

, V

, R

BLK

, G

BLK

, and B

BLK

pins are used)

DATA

CLK

PCL

Hsync

Vsync

Video

Video+character

Character

mixing circuit

Color view finder

Recording block

(deck block)

Monitor pin block

(video signal output)

PD6466

R : V

, R

BLK

G : V

, G

BLK

B : V

, B

BLK

Video

Character

mixing circuit

Character

mixing circuit

Microcontroller

PD6466

1.3 Display with RGB + V

+ V

Pins

The

PD6466 has three output options: A, B, and C. The following figure shows the output with each option

specified (the output is controlled by an output pin control command (refer to 3.11 Output Pin Control Command)).

Output pin control command (with MSB first (The command is input from the MSB (D15).)

(because this command is a 2-byte command, input of 16 bits is necessary when this command is input more than

once successively.)

D15

D14

D13

D12

D11

D10

OD1

OD0

AR3

AR2

AR1

AR0

(MSB)

(LSB)

Row specification bits

Function

Specifies row 0.

Specifies row 1.

Specifies row 11.

Setting prohibited

AR3

AR2

AR1

AR0

Output pin control bits

Pin output

: Outputs specified row, V

: Fixed to low level

: Fixed to low level, V

: Outputs specified row

OD1

OD0

Option A

Output pin control bits

Pin output

: Outputs all rows, V

: Fixed to low level

: Outputs all rows, V

: Outputs specified row

OD1

OD0

Option B

Output pin control bits

Pin output

: Outputs columns 0-23, V

: Fixed to low level

: Outputs columns 0-11, V

: Outputs columns 12-23

: Outputs columns 12-23, V

: Outputs columns 0-11

: Fixed to low level, V

: Outputs columns 0-23

OD1

OD0

Option C

Row specification control

Specify whether the character signal is output to the V

or V

pin in row units (or 12-column units).

Output pin control

The output of the V

and V

pins can be selected from three types, A, B, and C, by using the initial status setting

command (the blanking signal is output in the same manner).

PD6466

Output with option A

Output pin control bit

OD1

OD0

Pin output

: Outputs specified row, V

: Fixed to low level

(1)

: Fixed to low level, V

: Outputs specified row

(2)

Output

Character signal

Background signal (with background specified)

In the case of (1)

output

Outputs character signal resulting from

Outputs background signal to area other

ORing V

, V

, and V

pins (specified row).

than that specified by V

However, character specified by V

is not

output.

output

Fixed to low level (specified row)

Outputs background signal to only area

specified by V

In the case of (2)

output

Fixed to low level (specified row)

Outputs background signal to area other

than that specified by V

output

Outputs character specified by V

Outputs background signal to only area

(specified row)

specified by V

Output with option B

Output pin control bit

OD1

OD0

Pin output

: Outputs all rows, V

: Fixed to low level

(1)

: Outputs all rows, V

: Outputs specified row

(2)

Output

Character signal

Background signal (with background specified)

In the case of (1)

output

Outputs character signal resulting from

Outputs background signal to area other

ORing V

, V

, and V

pins (all rows).

than that specified by V

However, character specified by V

is not

output.

output

Fixed to low level (specified row)

Outputs background signal to only area

specified by V

In the case of (2)

output

Outputs character signal resulting from

Outputs background signal to area other

ORing V

, V

, and V

pins (all rows).

than that specified by V

However, character specified by V

is not

output.

output

Outputs character specified by V

Outputs background signal to only area

(specified row).

specified by V

PD6466

Output with option C

Output pin control bit

OD1

OD0

Pin output

: Outputs columns 0-23, V

: Fixed to low level

(1)

: Outputs columns 0-11, V

: Outputs columns 12-23

(2)

: Outputs columns 12-23, V

: Outputs columns 0-11

(3)

: Fixed to low level, V

: Outputs columns 0-23

(4)

Output

Character signal

Background signal (with background specified)

In the case of (1)

output

Outputs character signal resulting from

Outputs background signal to area other

ORing V

, V

, and V

pins (columns 0-23 of

than that specified by V

specified row). However, character specified

by V

is not output.

output

Fixed to low level (specified row)

Outputs background signal to only area

specified by V

In the case of (2)

output

Outputs character signals resulting from

Outputs background signal to area other

ORing V

, V

, and V

pins (columns 0-11 of

than that specified by V

specified row). However, character specified

by V

is not output.

output

Outputs character specified by V

(columns

Outputs background signal to only area

12-23 of specified row).

specified by V

In the case of (3)

output

Outputs character signal resulting from

Outputs background signal to area other

ORing V

, V

, and V

pins (columns 12-23 of

than that specified by V

specified row). However, character specified

by V

is not output.

output

Outputs character specified by V

(columns

Outputs background signal to only area

0-11 of specified row).

specified by V

In the case of (4)

output

Fixed to low level (specified row)

Outputs background signal to area other

than that specified by V

output

Outputs character specified by V

(columns

Outputs background signal to only area

0-23 of specified row).

specified by V

The signal of the character specified by V

is not output from the RGB or V

output channel, but the background

is output as described above.

When the

PD6466 is set to output RGB, V

, or V

signal, the following setting can be performed as well as the

above output control.

Independent ON/OFF control of character display of each channel (3-channel independent display ON/OFF

command)

Independent background control of each channel (3-channel background control command)

PD6466

1.3.1 Character signal output with output select option A

Option A

Whether a signal is output to the character signal output pin V

in row units can be specified by the OD0 bit

that selects an output pin. The V

output can be specified in character units, and the V

outputs only characters

for which the V

in the rows for which the OD0 bit is set to 1. The character specified by V

is not output to

the RGB and V

output.

Display example (to use V

channel for information for recording)

REC

TAPE

BATT

1/1000

0000

AM 11:30

1991. 2.22

YOKOHAMA

BAY BRIDGE

Displayed information such as alarm and tape counter

Recording information such as date and title

Example of view finder display

(RGB and V

output)

Output example

REC

TAPE

BATT

1/1000

0000

RGB character output

(color character)

Character output of V

channel

(specified row, character specified by V

)

AM 11:30

1991. 2.22

YOKOHAMA

BAY BRIDGE

REC

TAPE

BATT

1/1000

0000

Character output of V

channel

(specified row)

· Character information on the row

specified by clearing the OD0 bit to 0 is
output from V

. However, the

characterspecified by V

is not output.

· The row specified by setting the OD0

bit to 1 is not output (fixed to low level).

· The row specified by clearing the OD0

bit to 0 is not output (fixed to low level).

· Only the character information specified

by V

on the row specified by setting

the OD0 bit to 1 is output from V

· The character specified to V

is not

output.

PD6466

1.3.2 Character signal output with output select option B

Option B

The V

outputs characters of all rows regardless of setting of the OD0 and OD1 bits. The V

output can be

specified in character units, and the V

outputs only characters for which the V

in the rows for which the OD0

bit is set to 1. The character specified to V

is not output to the RGB and V

output.

Display example (to use V

channel for information for recording)

REC

TAPE

BATT

1/1000

0000

AM 11:30

1991. 2.22

YOKOHAMA

BAY BRIDGE

Displayed information such as alarm and tape counter

Recording information such as date and title

Recording information at the leftmost position (e.g., weather).

RAIN

Example of view finder display

(RGB and V

output)

Output example

REC

TAPE

BATT

1/1000

0000

RGB character output

(color character)

Character output of V

channel

(specified row, character specified to V

)

AM 11:30

1991. 2.22

YOKOHAMA

BAY BRIDGE

REC

TAPE

BATT

1/1000

0000

Character output of V

channel

(all rows)

RAIN

· The character information on all the

rows is output from V

regardless of

the OD0 bit. However, the character
specified to V

is not output.

· Only the character information specified

to V

on the row specified by setting

the OD0 bit to 1 is output from V

· The character information specified to

is not output on the row specified

by clearing the OD0 bit to 0 is not
output.

· The character specified to V

is not

output.

PD6466

1.3.3 Character signal output with output select option C

Option C

Columns 0 through 11, and 12 through 23 on each row can be output to the V

and V

pins by using the OD0

and OD1 bits of the "output pin control command".

Display example

TAPE

BATT

1/1000

AM 11:30

1991. 2.22

Displayed information such as alarm and tape counter

Recording information such as date and title

0000

REC

11 12

Example of view finder display

YOKOHAMA

BAY BRIDGE

Output example

TAPE

BATT

1/1000

RGB character output

(color character)

Character output of V

channel

(character specified by V

)

AM 11:30

1991. 2.22

YOKOHAMA

BAY BRIDGE

TAPE

BATT

1/1000

Character output of V

channel

(specified row)

0000

REC

· In the case of setting OD1 bit to 0, the

outputs the characters of columns

0 to 23 in specified rows for which the
OD0 bit is set to 0, or the characters of
columns 0 to 11 in specified rows for
which the OD0 bit is set to 1, excluding
the characters for which the V

specified.

· In the case of setting OD1 bit to 1, the

outputs the characters of columns

12 to 23 in specified rows for which
the OD0 bit is set to 0, and the rows for
which the OD0 bit is set to 1 are not
output (the V

pin is fixed to low level),

excluding the characters for which the
V

specified.

· In the case of setting OD0 bit to 0, the

outputs the characters of columns

0 to 11 in specified rows for which the
OD1 bit is set to 1, and the rows for
which the OD1 bit is set to 0 are not
output (the V

pin is fixed to low level).

· In the case of setting OD0 bit to 1, the

outputs the characters of columns

12 to 23 in specified rows for which the
OD1 bit is set to 0, or the characters of
columns 0 to 23 in specified rows for
which the OD1 bit is set to 1.

· The character specified to V

is not

output.

PD6466

1.3.4 Displaying characters specified by V

The characters specified by V

by the display character control command are not output to the RGB and V

output

channels (the RGB and V

output channels display

Note

the same manner as when Display Off Data is written).

Therefore, even if a background is specified by the RGB and V

output channel (no background/filled background),

no background is displayed at the specified portion.

Note

The display is slightly different from Display Off Data.

Filling data: Character filling all 12

18 dots

When Display Off Data is displayed with RGB, V

, and V

channel

In the case of Display Off Data, framing (or background, if any) of

adjacent characters is displayed with the framing or background

overlapping the area of Display Off Data by one dot of the minimum

size (the framing overlaps the area of Display Off Data, when there

are dots at the leftmost or rightmost position of the adjacent character

area).

Displaying character area specified by V

with RGB and V

channels

In the case of a character specified by V

, the framing of the adjacent

characters is displayed with the framing overlapping the V

-specified

character area by one dot of the minimum size, but the background

does not overlap to the V

-specified area.

Displaying V

-specified character area with V

channel

Even if the V

-specified character exists with the V

output, the

framing also overlaps the adjacent character area, but the background

does not (the framing overlaps the V

-specified character area, when

there are dots at the leftmost or rightmost position of the adjacent

character area).

If V

character specification area exists at the edge of display

area

(The figure shows the leftmost position of the display area. The same

applies to the rightmost position of the display area.)

Portion output with framing or background overlapping

(Width is 1 dot of the minimum character width.)

Portion where framing overlaps

Portion where background overlaps

(1)-(5)

(2)-(5)

The background is not output overlapping the V

-specified character

area.

Filling

Data

Display
Off
Data

Filling

Data

Filling

Data

-specified

character
area

Filling

Data

Display
Off
Data

-specified

character
area

Filling

Data

Filling

Data

Filling

Data

Filling

Data

(1)

(3)

(4)

(5)

(2)

PD6466

2. COMMAND

2.1 Command Format

Control commands can be serially input in 8-bit units. The word length of a command is variable.

Three types of commands are available: 1-byte commands that consist of 8 bits including the instruction and data,

2-byte commands, and 2-byte successive commands that can be input in an abbreviated form.

Inputting command data with the MSB first or LSB first can be selected by using the CMDCT pin.

When the CMDCT pin is high, the data is input with the MSB first; when it is low, the data is input with the LSB

first.

2.2 Command List

(1) MSB first

1-byte commands

(MSB)

Function

Video RAM batch clear

Display control

BL1

BL0

Background color/frame color control

BFC

3-channel independent display ON/OFF

DOA

DOB

DOC

Character color reverse ON/OFF

BCRE

Blue back ON/OFF

CLR

Character address bank select

Output switch control

S3A

S3B

SW4

SW2

SW1

2-byte commands

(MSB)

Function

D15 D14 D13 D12 D11 D10

Character display position control

Write address control

AR3 AR2 AR1 AR0 AC4 AC3 AC2 AC1 AC0

Output pin control

OD1 OD0

AR3 AR2 AR1 AR0

Character size control

SV1 SV0 SH1 SH0

AR3 AR2 AR1 AR0

3-channel background control

BA1 BA0 BFA BB1 BB0 BFB BC1 BC0 BFC

Initial status setting

RS OP1 OP0 COC VST OSC

Test mode

Note

Must not be used.

2-byte successive command

(MSB)

Function

D15 D14 D13 D12 D11 D10

Display character control

PD6466

(2) LSB first

1-byte commands

(LSB)

Function

Video RAM batch clear

Display control

BL0

BL1

Background color/frame color control

BFC

3-channel independent display ON/OFF

DOC

DOB

DOA

Character color reverse ON/OFF

BCRE

Blue back ON/OFF

CLR

Character address bank select

Output switch control

SW1

SW2

SW4

S3B

S3A

2-byte commands

(LSB)

Function

D10 D11 D12 D13 D14 D15

Character display position control

Write address control

AR3

AC0 AC1 AC2 AC3 AC4 AR0 AR1 AR2

Output pin control

AR0 AR1 AR2 AR3

OD0 OD1

Character size control

SV0 SV1

AR0 AR1 AR2 AR3

SH0 SH1

3-channel background control

BA1

BFC BC0 BC1 BFB BB0 BB1 BFA BA0

Initial status setting

OSC VST COC OP0 OP1 RS

Test mode

Note

Must not be used.

2-byte successive command

(LSB)

Function

D10 D11 D12 D13 D14 D15

Display character control

PD6466

2.3 Power-ON Clear Function

Because the internal status of the IC is undefined on power application, execute power-ON clear by lowering the

PCL pin for the duration described below.

Command setting on power-ON clear is as follows:

Clears test mode

Default setting of initial status (Refer to 3.14 Initial Status Setting Command.)

Clears all character data (12 rows, 24 columns) of video RAM (Display Off Data (FEH)). No data blinks.

Video RAM write address (row 0, digit 0)

Standard size for all rows as character size (SV1, SV0, SH1, SH0) = (0, 0, 0, 0)

All rows specified for output pin selection (OD1, OD0) = (0, 0)

Display OFF, LC oscillation ON, blinking OFF

Display of each channel OFF

No background and framing for all three channels

Blue back OFF

Low-order (0) bank for character address

The time required for power-ON clear can be calculated by the following expression. Do not input any command

during this time.

t (Time required for power-ON clearing) = t

PCLL

Note

+ Video RAM clear time

= 10 (

s) + 10 (

s) + 12/f

OSC

(MHz)

288

OSC

(MHz): LC oscillation frequency or external input clock frequency

Note

Refer to Power-ON Clear Specifications in 6. ELECTRICAL

CHARACTERISTICS.

To clear the video RAM, the dot clock (OSC

pin) must be input. Be sure to input the clock when the input of an

external clock is selected.

PD6466

3. DETAILS OF COMMANDS

3.1 Video RAM Batch Clear Command

This command can be used to clear the video RAM with a single command (regardless of whether the MSB or LSB

comes first)

(MSB)

(LSB)

The following contents are set by the video RAM batch clear command.

Clears all the character data (Display Off Data (FEH)) of the video RAM (12 rows, 24 columns). No data blinks.

Video RAM write address: (Row 0, column 0)

Standard size for all rows as character size (SV1, SV0, SH1, SH0) = (0, 0, 0, 0)

All rows specified for output pin selection (OD1, OD0) = (0, 0)

Display OFF, LC oscillation ON, blinking OFF

The time required for clearing the video RAM can be calculated by the following expression. Do not input any

command during this time.

t (Time required for video RAM clearing) = Video RAM clear time

= 10 (

s) + 12/f

OSC

(MHz)

288

OSC

(MHz): LC oscillation frequency or external input clock frequency

To clear the video RAM, the dot clock (OSC

pin) must be input. Be sure to input the clock when the input of an

external clock is selected.

Remark

This command resets the hardware of the IC by inputting a signal to the PCL pin. While initializing the

IC including clearing the video RAM and the test mode, the video RAM batch clear command executes

software reset to initialize the IC, and does not clear the test mode.

PD6466

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

BL0

BL1

Blinking control (screen units)

The function selected by the initial setting command is controlled.

Blinking control (screen units)

Whether the characters written to the video RAM blink or not is controlled in screen units. The character

specified to blink by the display character control command blinks.

The blinking ratio is 1:1, and the blinking frequency can be selected from three types.

Left to right reverse control

The character specified to be reversed left to right by the display character control command is reversed

(this is valid only if character left to right reverse is selected by the initial setting command).

Display example of character specified to be reversed left to right (character "F" is displayed)

When left to right reverse is OFF

When left to right reverse is ON

LC oscillation control

The oscillation circuit can be turned ON/OFF by the oscillation control bit. Oscillation is stopped during the

period in which the characters are not displayed, to reduce the power consumption.

Nothing can be written to the video RAM while the oscillation is stopped. To write data to the video RAM,

be sure to turn ON oscillation.

PD6466

3.3 Background Color/Frame Color Control Command

This command specifies the background color and frame color. This command is valid when filling of the

background, blank background, or framing is specified.

(1) With MSB first (The command is input from MSB (D7).)

BFC

(MSB)

(LSB)

Background color control bit

Function

Black

Blue

Green

Cyan

Red

Magenta

Yellow

White

Frame color control bit

Function

Frame color: Black

Frame color: White

BFC

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

BFC

Frame color control

The frame color (white/black) can be selected in screen units (RGB output). If the frame is specified with

and V

output, the frame color is fixed to black.

Background color control

The background color can be selected (from eight colors) in screen units (RGB output). If the background

is specified with V

and V

output (blank background or filled background), the background color is fixed

to black.

PD6466

3.4 3-Channel Independent Display ON/OFF Command

This command can turn ON/OFF the display of character output of 3 channels independently.

(1) With MSB first (The command is input from MSB (D7).)

DOA

DOB

DOC

(MSB)

(LSB)

Control bit

DOA

DOB

DOC

DOA

DOB

DOC

Control bit

Function

RGB display OFF

RGB display ON

display OFF

display ON

display OFF

display ON

Function

Character display OFF

Character display ON

Don't care

With support of RGB/V

output selected

With R/G/B/3BLK output selected

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

DOC DOB DOA

Displaying the character signal of the 3 channels (RGB, V

, and V

) can be independently turned ON/

OFF.

When RGB + RGB compatible BLK is selected, it is controlled by the display ON/OFF command.

Turning ON display each output channel by using this command is valid only when the display is turned

ON by the display control command.

If the display is turned OFF by the display control command, the display remains OFF even if it is specified

to be ON by this command.

PD6466

3.5 Character Color Reverse ON/OFF Command

This command specifies reversal of character color in screen units.

(1) With MSB first (The command is input from MSB (D7).)

BCRE

(MSB)

(LSB)

BCRE

Function

Character color not reversed

Character color reversed

Character color reverse control bit

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

BCRE

The color of the character specified by the display character control command is reversed for the whole screen

with the reverse specifications (character color: black or white) specified by the initial status setting command.

Example of display of reversed character (example of reversing character "I")

No framing

Framing

Color reverse OFF

Color reverse ON

Character color: Black, no framing

Character color: White, no framing

Selected from two
types by initial
setting command

Character
color with
reverse OFF

Character color: White, black frame

Specification of framing is invalid for black character.

Specification of framing is invalid for white character.

Character color
with reverse OFF

PD6466

3.7 Character Address Bank Select Command

This command selects the area of the character address specified by the character address specification bit of the

display character control command.

(1) With MSB first (The command is input from MSB (D7).)

(MSB)

(LSB)

Character address bank select control bit

Function

Low-order bank (0)

High-order bank (1)

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

If the low-order bank (0) is specified by the 8-bit data (the second byte of the display character control

command) of the character data, character addresses 00H through FFH (common addresses 000H through

0FFH) of the low-order (0) bank are specified. If the high-order bank (1) is specified, character addresses 00H

through FFH (common addresses 100H through 1FFH) of the high-order (1) bank are specified.

If FEH is specified at the character address of the display character control command for both banks, the

command can be used as the Display Off code. If FFH is specified, it can be used as a 2-byte successive

command end code.

PD6466

Output format in each switch status

Mode

SW1

SW2

SW4

SW3

RGB

OFF

RGB

OFF

RGB

OFF

RGB+V

OFF

RGB

OFF

RGB

OFF

RGB

RGB+V

OFF

RGB

OFF

RGB+V

OFF

RGB

OFF

RGB

OFF

RGB

OFF

RGB

OFF

RGB

OFF

RGB+V

OFF

RGB

Caution The V

character is output by each channel as follows. The V

outputs only V

regardless of the

status of SW1 to SW4 (same as

PD6461 and 6462).

· If RGB channel is RGB, RGB + V

: Not controlled at all by output pin control command.

· If V

channel is V

, V

+ V

: Output pins at V

side are controlled.

· If V

channel is V

: Output pins at V

side are controlled.

PD6466

3.9 Character Display Position Control Command

This command can be used to set the character display start position in 32 steps in units of 3 dots in the horizontal

direction, and in 32 steps in units of 3 rows in the vertical direction (because this command is a 2-byte command, input

of 16 bits is necessary when this command is input more than once successively).

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

(MSB)

(LSB)

Horizontal display start position control bit

Function

Time from rising of Hsync ( s)
(22+3

0)/f

OSC

(MHz)

Time from rising of Hsync ( s)
(22+3

1)/f

OSC

(MHz)

Time from rising of Hsync ( s)
(22+3

31)/f

OSC

(MHz)

Remark f

OSC

: LC oscillation frequency or external input clock frequency

Vertical display start position control bit

Function

0+2H (9H

0+2H) from rising of

Vsync

1+2H (9H

1+2H) from rising of

Vsync

31+2H from rising of Vsync

Remarks 1. H: row

2. ( ): If 9H unit is selected by the initial status setting

command.

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

PD6466

3.10 Write Address Control Command

This command is used to specify a write address when characters are written to the display area (video RAM) of

12 rows and 24 columns (because this command is a 2-byte command, input of 16 bits is necessary when this

command is input more than once successively).

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

AR3

AR2

AR1

AR0

AC4

AC3

AC2

AC1

AC0

(MSB)

(LSB)

Write column address control bit

Function

Sets column 0

Sets column 1

Sets column 23

Setting prohibited

AC4

AC3

AC2

AC1

Write row address control bit

Function

Sets row 0

Sets row 1

Sets row 11

Setting prohibited

AR3

AR2

AR1

AR0

AC0

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

AR3

AC0

AC1

AC2 AC3

AC4 AR0

AR1

AR2

Write column address control

One row consists of 24 columns in the horizontal direction. Specify to which column data is to be written.

Write row address control

One column consists of 12 rows in the vertical direction. Specify to which row data is to be written.

PD6466

3.11 Output Pin Control Command

This command selects the format of pin output of the option (A, B, or C) specified by the initial status setting

command (because this is a 2-byte command, input of 16 bits is necessary if this command is input more than once

successively).

Remark

This command is invalid when RGB + RGB compatible BLK output is selected.

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

OD1

OD0

AR3

AR2

AR1

AR0

(MSB)

(LSB)

Row specification bit

Function

Sets row 0

Sets row 1

Sets row 11

Setting prohibited

AR3

AR2

AR1

AR0

Output pin control bit

Pin output

: Outputs specified row, V

: Fixed to low level

: Fixed to low level, V

: Outputs specified row

OD1

OD0

Option A

Output pin control bit

Pin output

: Outputs all rows, V

: Fixed to low level

: Outputs all rows, V

: Outputs specified row

OD1

OD0

Option B

Output pin control bit

Pin output

: Outputs columns 0-23, V

: Fixed to low level

: Outputs columns 0-11, V

: Outputs columns 12-23

: Outputs columns 12-23, V

: Outputs columns 0-11

: Fixed to low level, V

: Outputs columns 0-23

OD1

OD0

Option C

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

AR0

AR1

AR2

AR3

OD0 OD1

Row specification control

Specify to which of the V

or V

pin the character signal is to be output in row units (or 12-column units).

Output pin control

Output of the V

and V

pin can be selected from A, B, or C by using the initial status setting command

(the blanking signal is output in the same manner).

PD6466

3.12 Character Size Control Command

The character size can be specified in row units (independently in the horizontal and vertical directions. Because

this is a 2-byte command, input of 16 bits is necessary when this command is input more than once successively).

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

SV1

SV0

SH1

SH0

AR3

AR2

AR1

AR0

(MSB)

(LSB)

Row specification control bit

Function

Sets row 0

Sets row 1

Sets row 11

Setting prohibited

AR3

AR2

AR1

AR0

Horizontal character size control bit

Function

SH1

1 dot = 1t dots (horizontal standard size)

1 dot = 2t dots (horizontal

2 size)

1 dot = 3t dots (horizontal

3 size)

1 dot = 4t dots (horizontal

4 size)

1t dots ( s) =

OSC

: LC oscillation frequency

or external clock
frequency)

OSC

(MHz)

SH0

Vertical character size control bit

Function

SV1

1 dot = 1H (vertical standard size)

1 dot = 2H (vertical

2 size)

1 dot = 3H (vertical

3 size)

1 dot = 4H (vertical

4 size)

SV0

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

SV0

SV1

AR0

AR1

AR2

AR3

SH0

SH1

Row specification control

The character size is specified in row units. Which row is specified is controlled.

Character size control

Four steps (16 types) of character size can be selected in the vertical and horizontal directions independently.

PD6466

3.13 3-Channel Background Control Command

This command can be used to independently specify the background for the output of the 3 channels (because

this command is a 2-byte command, input of 16 bits is necessary when this command is input more than once

successively).

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

BA1

BA0

BFA

BB1

BB0

BFB

BC1

BC0

BFC

(MSB)

(LSB)

background control bit

Function

No background

Blank background

Must not be specified

Filled background

BC1

BC0

framing control bit

Function

Framing OFF

Framing ON

BFC

background control bit

Function

No background

Blank background

Must not be specified

Filled background

BB1

BB0

framing control bit

Function

Framing OFF

Framing ON

BFB

RGB background control bit

Function

No background

Blank background

Must not be specified

Filled background

BA1

BA0

RGB framing control bit

Function

Framing OFF

Framing ON

BFA

output

RGB output

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

BA1

BFC

BC0

BC1

BFB

BB0

BB1

BFA BA0

PD6466

Framing control

Whether a character is framed is specified in screen units.

Framing: If the rightmost or leftmost dots of the dot matrix forming a character are used, the frame is

displayed in the adjacent character display area. If the rightmost or leftmost dots of the dot matrix

are not used, the frame is displayed on the left or the right of, above, or upper or lower left or

right of the character. Even when the top or bottom dot is used, framing does not overlap the

line above or below. Dots other than those at the top or bottom of the dot matrix are framed

vertically, horizontally, and diagonally.

Character dots

Framing

The size of the framing is fixed to one dot of the minimum size even if the character size changes.

Background control

No background, blank background, or filled background can be selected in screen units. The background

color is selected by the background color/framing color control command.

No background

: Only character data is output.

Blank background : The background is displayed in the display area of the characters written to the video

RAM and the portion overlapping by one dot of the minimum size from the rightmost

and leftmost position of that area.

Filled background : In addition to the area where the background is displayed in the blank background

mode above, the background is displayed in the areas other than the character display

area.

Background and frame display in the case of RGB + V

+ V

output

The portion of the character for which V

is specified by the display character control command is not output

to the RGB and V

channels. Therefore, even if a background (blank background or filled background)

is specified for the RGB or V

output, no background is displayed in the V

-specified area. In addition,

no background is displayed at the portion of the character other than those specified by V

in the case

of V

output (for the details of display of V

-specified character area for RGB and V

output, refer to 1.3

Display with RGB + V

+ V

Pins and 1.3.4 Displaying characters specified by V

When RGB + RGB compatible BLK output is selected, only the background control bit of RGB output is valid,

and the background control bit of V

output and V

output is invalid (when RGB + RGB compatible BLK

output is selected, the V

output pin is not used. The V

channel outputs the logical sum of the RGB

output).

PD6466

3.14 Initial Status Setting Command

This command initializes the operation mode.

Execute this command first on power application.

To change the initial setting, be sure to execute this command with the display OFF.

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

OP1

OP0

COC

VST

OSC

(MSB)

(LSB)

Vertical display start position control bit

Function

Vertical display start position setting unit = 3 rows

Vertical display start position setting unit = 9 rows

VST

Output selection control bit

Function

Option A

Option B

Option C

Must not be specified

OP1

OP0

Pin selection control bit

Function

RGB + V

+ V

RGB + RGB compatible BLK (3BLK)

COC

Dot clock control bit

Function

LC oscillation

External clock input

OSC

Character color reverse control bit

Function

Character color: Black (frame specification is invalid)

Character color: White (frame specification is valid)

Function selection bit

Function

Character blinks

Character left to right reverse

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

OSC VST COC OP0

OP1

PD6466

This command sets the information selected by a mask code option in the

PD6461 and 6462.

The default setting is as follows:

OSC

= 0

: LC oscillation

VST

= 0

: 3-row units

COC

= 0

: RGB + V

+ V

(OP1, OP0) = (0, 1) : Option B

= 0

: Black character

= 0

: Character blinks

Dot clock control

The dot clock for character display is set.

The dot clock is selected from LC oscillation and external clock input.

Vertical display start position control

The character display start position and setting accuracy are set.

The setting accuracy is selected from 3 rows and 9 rows.

Pin selection control

The output pins of the character and blanking signals are set.

The output pins are selected from the following two types:

RGB + V

+ V

: Signal output pins = V

, V

BLK

, V

, BLK1, V

, BLK2

RGB + RGB compatible BLK : Signal output pins = V

, V

, R

BLK

, G

BLK

, B

BLK

, V

, BLK1

Output selection control

The output formats of V

and V

are set.

The output formats are selected from options A, B, and C (refer to 1.3 Display with RGB + V

+ V

Pins).

The output formats are set only when RGB + V

+ V

is selected by means of pin selection control. Select

option B when RGB + RGB compatible BLK is selected.

Character color reverse control

The character when color displayed is turned ON is specified.

Select the character from black character (with frame specification invalid) or white character (with frame

specification valid) (refer to 3.5 Character Color Reverse ON/OFF Command).

PD6466

(1) With MSB first (The command is input from MSB (D15).)

D15

D14

D13

D12

D11

D10

(MSB)

(LSB)

Character specification bit

Function

Outputs data of 00H

Outputs data of 01H

Outputs FEH (Display Off Data)

FFH (2-byte successive command end code)

output specification bit

Function

specification OFF

specification ON

Blinking control bit (character units)

Function

Character color specification bit

Function

Black

Blue

Green

Cyan

Red

Magenta

Yellow

White

Character color reverse specification bit

Function

Character color reverse specification OFF

Character color reverse specification ON

Character does not blink.

Character blinks.

Left and right reverse character control bit

Function

Left and right reverse character specification OFF

Left and right reverse character specification ON

With character blinking selected

Note

With character left and right reverse selected

Note

Set these bits with the initial setting command.

PD6466

(2) With LSB first (Use of each bit is the same as (1). The command is input from LSB (D0).)

(LSB)

(MSB)

D10

D11

D12

D13

D14

D15

Character specification

Specify the addresses of the 256 types of characters in each bank. Note, however, that addresses FEH

and FFH are respectively fixed to Display Off Data and a 2-byte successive command end code (these

addresses are also fixed when characters are changed by using a mask code option, and no characters

can be stored to these addresses). The design of the characters can be created by using a mask code

option.

output specification

The character output from the V

pin can be specified in character units. The character specified by V

is not output from the RGB output or V

output channel (this specification is invalid when RGB + RGB

compatible BLK output selected).

Blinking control (character units)

Note

Whether the character written to the video RAM blinks is specified in character units. Blinking is turned

ON/OFF in screen units by using the character display control command (refer to 3.2 Display Control

Command).

Left to right reverse character specification

Note

Left to right reverse can be turned ON/OFF in character units (this specification is valid when left and right

reverse is turned ON by the display control command).

Note

Character blinking or character left to right reverse, whichever selected by the initial setting

command, is valid.

Character color control

A character color can be set in units of one character (valid for RGB output only. The color is fixed for the

and V

output).

Character color reverse specification

It can be specified whether the color of a character can be reversed or not, in character units. Turning ON/

OFF the character color reverse is specified in screen units by the character color reverse ON/OFF

command (refer to 3.5 Character Color Reverse ON/OFF Command).

PD6466

4.3 2-Byte Successive Commands

D15-D8

MSB first

DATA

D0-D7

D7-D0

D8-D15

1st byte

2nd byte

1st byte

2nd byte

DATA

CLK

LSB first

D7-D0

D8-D15

2nd byte

The 2-byte successive command writes characters to the video RAM. To successively write characters without

changing the blinking data, reverse specification data, and V

specification data, first transfer the first byte and then

transfer the second byte (character address).

To change the contents of the above data, change the contents of the data and then input the command from the

first byte after terminating the 2-byte successive command once (by either making CS high or transferring the 2-byte

successive command end code).

However, the command cannot be transferred successively across banks.

When the low-order bank is selected, the command can be transferred successively in a character address range

of 000H to 0FFH; when the high-order bank is selected, the character address range is from 100H to 1FFH.

It is recommended that characters that are frequently used be stored to both the high-order and low-order banks.

To write a character that across the banks, complete successive transfer once, and then transfer the command

from the first byte after changing the bank.

PD6466

4.4 Successive Input of Command

Transfer each of the 1-byte, 2-byte, and 2-byte successive commands from a microcontroller to the

PD6466 as

follows.

To transfer a 1-byte or 2-byte command, or a 2-byte successive command with blinking data changed after a 2-

byte successive command has been transferred, either make CS high once, or transfer FFH (2-byte successive

command end code) at the end of the 2-byte successive command. In the latter case, it is not necessary to make

CS high.

4.4.1 When 2-byte successive command end code is not used

Example 1-byte command

2-byte successive command

1-byte command

DATA

CLK

Make CS low once and then back high again.

2nd byte

(D0-D7)

MSB first (LSB first)

2nd byte

(D8-D15)

00H-FEH

(normal character)

2-byte successive

command

1st byte

(D0-D7)

1-byte command

(D0-D7)

(D8-D15)

00H-FEH

(normal character)

D7-D0

D15-D8

D7-D0

1-byte command

4.4.2 When 2-byte successive command end code is used

Example 1-byte command

2-byte successive command

1-byte command

DATA

CLK

1-byte command

2nd byte

(D0-D7)

MSB first (LSB first)

2nd byte

(D8-D15)

00H to FFH

(normal character)

2-byte successive

command

1st byte

(D0-D7)

1-byte command

(D0-D7)

(D8-D15)

FFH (2-byte successive
command end code)

D7-D0

D15-D8

D7-D0

It is not necessary to make CS low and then back high again.

Remark

By using the 2-byte successive command end code, the CS pin may remain low. However, it is

recommended to make CS pin high to improve the noise immunity.

PD6466

5. CHARACTER PATTERNS

The

PD6466 can display 512 character patterns, including alphanumeric characters, Kanji characters, and

symbols, which are stored in the character generator ROM. Each pattern in the character generator ROM can be

modified by specifying a mask code option. However, the Display Off Data at character address FEH and 2-byte

continuous command end code at FFH cannot be modified because they are fixed in both high-order (1) and low-order

(0) banks. Therefore, no character pattern can be input at these addresses.

When none of the 12

18 dots are filled for a character pattern at addresses 000H to 0FDH and 100H to 1FDH,

the character pattern is called Blank Data. Character address FEH in both banks is called Display Off Data. Blank

Data and Display Off Data are represented in the same way (with no dots filled) in character patterns (of the

PD6466GS-001) shown on the following pages, but they are different as follows:

Character Code

Display of Character Area in Each Background Mode

No background

Minimum background

Overall background

Blank Data

Displays image

Displays background

Display Off Data

Displays image

Displays image only

(without background)

You cannot specify Display Off Data for addresses other than FEH when using a mask code option. Blank Data,

however, can be specified at any address from 000H to 0FDH or 100H to 1FDH (address 0FFH and 1FFH cannot

be used because they are fixed to the 2-byte continuous command end code).

The character patterns of the

PD6466GS-001/GT-201 (NEC's standard model) are shown on the following pages.

PD6466

6. ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings

Parameter

Symbol

Ratings

Unit

Supply voltage

Input pin voltage

0.3 to V

+ 0.3

Output pin voltage

OUT

0.3 to V

+ 0.3

Operating ambient temperature

20 to +75

Storage temperature

stg

40 to +125

Output current

Caution Exposure to Absolute Maximum Ratings for extended periods may affect device reliability; exceeding

the ratings could cause permanent damage. The parameters apply independently. The device

should be operated within the limits specified under DC and AC Characteristics.

Recommended Operating Range

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Supply voltage range

2.7

5.5

Oscillation frequency (LC oscillation)

OSC

= 2.7 to 5.5 V

6.0

8.0

MHz

Oscillation frequency (external clock)

OSC

= 2.7 to 5.5 V

4.0

8.0

MHz

Operating ambient temperature

+75

Electrical Characteristics (T

= 25

C, unless otherwise specified, V

= 2.7 to 5.5 V)

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Supply voltage range

2.7

5.0

5.5

Current consumption 1

OSC

= 8.0 MHz, V

= 5.0 V

5.0

10.0

Current consumption 2

OSC

= 8.0 MHz, V

= 3.0 V

3.0

5.0

Signal input high-level voltage

ISH

0.7 V

Signal input low-level voltage

ISL

0.3 V

Signal output high-level voltage

OSH

OSL

= 1 mA (V

= 5 V)/0.5 mA

0.9 V

= 3 V)

Signal output low-level voltage

OSL

= 1 mA (V

= 5 V)/0.5 mA

0.1 V

= 3 V)

Remark

Signal input

: DATA, CLK, CS, PCL, Hsync, Vsync, CMDCT

Signal output : V

, V

BLK

, BLK1, BLK2 (R

BLK

, G

BLK

, B

BLK

)

( ): Set by initial status setting command

PD6466

Character and BLK Signal Output

Characters and BLK signal are output in synchronization with the falling of the dot clock.

CDS

CUS

DTW

CDL

50 %

10 %

90 %

External

input clock

Character signal

BLK signal

Output Timing (T

= 20 to +75

C, pins: V

, V

BLK

, V

, BLK1, V

, BLK2, (R

BLK

, G

BLK

, B

BLK

))

( ): Set by initial status setting command

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Character/BLK signal output delay

CDL

= 4.5 to 5.5 V, output load capacitance = 10 pF

Character/BLK signal output delay

CDL

= 2.7 to 3.3 V, output load capacitance = 10 pF

Character/BLK signal rise time

CUS

= 4.5 to 5.5 V, output load capacitance = 10 pF

Character/BLK signal rise time

CUS

= 2.7 to 3.3 V, output load capacitance = 10 pF

Character/BLK signal falling

CDS

= 4.5 to 5.5 V, output load capacitance = 10 pF

Character/BLK signal falling

CDS

= 2.7 to 3.3 V, output load capacitance = 10 pF

Minimum size of 1 dot width

DTW

= 4.5 to 5.5 V, output load capacitance = 10 pF (1/oscillation frequency (MHz))

Minimum size of 1 dot width

DTW

= 2.7 to 3.3 V, output load capacitance = 10 pF (1/oscillation frequency (MHz))

PD6466

Command Successive Input Permissible Time

Successively input commands under the following timing conditions:

= 20 to +75

C, V

= 2.7 to 5.5 V)

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Command successive

Common to all commands

2.0

input enable time

Video RAM write

Display ON

LC oscillation

Note 1

command

External clock

Note 2

Display OFF

2.0+19/f

OSC

: LC oscillation or external input clock frequency (MHz)

Notes 1.

(1) 2.0 + (14/f

OSC

)

S1 + 19/f

OSC

+ (1/f

OSC

)

S2 + t

HWL

(2) 2.0 + (19/f

OSC

)

: Character size (

1 (MIN.) to

S1 : Horizontal character size before Hsync

S2 : Horizontal character size before Hsync

HWL

: Hsync width

Because the clock is not supplied to the internal circuitry during LC oscillation and Hsync, if Hsync is input

while the video RAM write command is executed, the width directly influences the execution time (1).

If Hsync is not input in the middle, the execution time is as (2) above.

Whether (1) or (2) is longer in time depending on the horizontal character size before and after Hsync and

Hsync width is not known. The longer time is the permissible minimum time.

2.0 + 31/f

OSC

(S = 1)

2.0 + (19/f

OSC

)

S (S = 2, 3, 4)

The restriction of T2 is not applied to the commands other than the video RAM write command if the clock

cycle for control satisfies the specifications.

DATA

Hi-Z

CLK

PD6466

7. APPLICATION CIRCUIT EXAMPLE

CLK

DATA

PCL

CMDCT

OSC

OUT

OSC

TEST

GND

Hsync

Vsync

BLK

BLK2

BLK1

Note 4

BLK

)

Note 4

BLK

)

Note 4

BLK

)

PD6466GS/GT

20 (24)

19 (23)

18 (21)

17 (20)

16 (19)

15 (18)

14 (17)

13 (16)

12 (15)

11 (14)

Output

Inputs a negative Hsync
or Vsync signal

1 (1)

2 (2)

3 (4)

4 (5)

5 (6)

6 (7)

7 (8)

Note 3

8 (9)

Note 3

9 (10)

10 (11)

Connected to microcomputer

10 F

100 k

10 F

Note 1

0.01 F

Note 2

Note 5

33 F

5 to 30 pF

30 pF

MSB first

LSB first

LC module

pin No. 1

LC module

pin No. 3

Notes 1.

CR constant must be satisfied with Power-ON Clear Specification (refer to 6. ELECTRICAL

CHARACTERISTICS).

This circuit can reduce the number of external components and facilitates the adjustment of oscillation

frequency, using LC module (part number: Q285NCIS-11181, manufactured by Toko, Inc.)

Connect these pins as follows when inputting external clock:

OSC

pin: external clock input, OSC

OUT

pin: open

Signals in ( ) are set by using an initial status setting command (RGB + RGB compatible blanking).

When this connection is open, LSB first is selected.

Remarks 1. The number in the parentheses indicates the pin number of the

PD6466GT-xxx.

2. With the

PD6466GT-xxx, influence by noise via lead frame can be surpressed by connecting the

N.C. pins (3, 12, 13, 22) to GND.

PD6466

9. RECOMMENDED SOLDERING CONDITIONS

When soldering this product, it is highly recommended to observe the conditions as shown below. If other soldering

processes are used, or if the soldering is performed under different conditions, please make sure to consult with our

sales offices.

For more details, refer to our document "SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL"

(C10535E).

Surface mount devices

PD6466GS-xxx: 20-pin plastic shrink SOP (300 mil)

PD6466GT-xxx: 24-pin plastic SOP (375 mil)

Process

Conditions

Symbol

Infrared ray reflow

Peak temperature: 235

C or below (Package surface temperature),

IR35-00-2

Reflow time: 30 seconds or less (at 210

C or higher),

Maximum number of reflow processes: 2 times.

VPS

Peak temperature: 215

C or below (Package surface temperature),

VP15-00-2

Reflow time: 40 seconds or less (at 200

C or higher),

Maximum number of reflow processes: 2 times.

Wave soldering

Solder temperature: 260

C or below, Flow time: 10 seconds or less,

WS60-00-1

Maximum number of flow processes: 1 time,

Pre-heating temperature: 120

C or below (Package surface temperature).

Partial heating method

Pin temperature: 300

C or below,

Heat time: 3 seconds or less (Per each side of the device).

Caution Apply only one kind of soldering condition to a device, except for "partial heating method", or the

device will be damaged by heat stress.

PD6466

NOTES FOR CMOS DEVICES

PRECAUTION AGAINST ESD FOR SEMICONDUCTORS

Note: Strong electric field, when exposed to a MOS device, can cause destruction

of the gate oxide and ultimately degrade the device operation. Steps must

be taken to stop generation of static electricity as much as possible, and

quickly dissipate it once, when it has occurred. Environmental control must

be adequate. When it is dry, humidifier should be used. It is recommended

to avoid using insulators that easily build static electricity. Semiconductor

devices must be stored and transported in an anti-static container, static

shielding bag or conductive material. All test and measurement tools

including work bench and floor should be grounded. The operator should

be grounded using wrist strap. Semiconductor devices must not be touched

with bare hands. Similar precautions need to be taken for PW boards with

semiconductor devices on it.

HANDLING OF UNUSED INPUT PINS FOR CMOS

Note: No connection for CMOS device inputs can be cause of malfunction. If no

connection is provided to the input pins, it is possible that an internal input

level may be generated due to noise, etc., hence causing malfunction. CMOS

device behave differently than Bipolar or NMOS devices. Input levels of

CMOS devices must be fixed high or low by using a pull-up or pull-down

circuitry. Each unused pin should be connected to V

or GND with a

resistor, if it is considered to have a possibility of being an output pin. All

handling related to the unused pins must be judged device by device and

related specifications governing the devices.

STATUS BEFORE INITIALIZATION OF MOS DEVICES

Note: Power-on does not necessarily define initial status of MOS device. Produc-

tion process of MOS does not define the initial operation status of the device.

Immediately after the power source is turned ON, the devices with reset

function have not yet been initialized. Hence, power-on does not guarantee

out-pin levels, I/O settings or contents of registers. Device is not initialized

until the reset signal is received. Reset operation must be executed imme-

diately after power-on for devices having reset function.

PD6466

No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in
this document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property
rights of third parties by or arising from use of a device described herein or any other liability arising from use
of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other
intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on a
customer designated "quality assurance program" for a specific application. The recommended applications of
a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device
before using it in a particular application.

Standard: Computers, office equipment, communications equipment, test and measurement equipment,

audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots

Special:

Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)

Specific:

Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.

The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact an NEC sales representative in advance.
Anti-radioactive design is not implemented in this product.

M4 96.5

[MEMO]

The application circuits and their parameters are for reference only and are not intended for use in actual design-ins.

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