Document Outline
- Description
- Features
- Total Current Consumption Characteristics
- Type Name
- LCD-II Family Comparison
- HD66724/HD66725 Block Diagram
- HD66724 Pad Arrangement
- HD66724 Pad Coordinates
- HD66725 Pad Arrangement
- HD66725 Pad Coordinates
- Chip-on-Glass (COG) Routing Example
- TCP Dimensions (HD66724TA0)
- TCP Dimensions (HD66725TA0)
- Pin Functions
- Block Function Description
- SEGRAM Address Map
- Modifying Character Patterns
- Instructions
- Instruction Description
- Reset Function
- Serial Data Transfer
- Key Scan Control
- Key Scan Interrupt (Wake-Up Function)
- Parallel Data Transfer
- Oscillator Circuit
- Power Supply for Liquid Crystal Display Drive
- Contrast Adjuster
- Liquid Crystal Display Drive Bias Selector Circuit
- LCD Panel Interface
- CGROM Bank Switching Function
- Graphic Display Function
- Vertical Smooth Scroll
- Setting Instructions
- Horizontal Smooth Scroll
- Double-Height Display
- Blink Mark Display
- Line-Cursor Display
- Partial-Display-On Function
- Sleep Mode
- Standby Mode
- Absolute Maximum Ratings
- DC Characteristics
- Booster Characteristics
- AC Characteristics
- Electrical Characteristics Notes
- Load Circuits
- Timing Characteristics
1
HD66724/HD66725
(Graphics LCD Controller/Driver
with Key Scan Function)
ADE-207-309(Z)
Rev 1.2
'99.8
Description
The HD66724/HD66725, dot-matrix graphics LCD controller and driver LSI incorporating a key scan
function up to a 4-by-8 key matrix, display characters such as alphanumerics, katakana, hiragana and
symbols as well as graphics such as kanji and pictograms. They can be configured to drive a dot-matrix
liquid crystal display and control key scan functions under the control of the microprocessor connected via
the clock-synchronized serial or 4/8-bit bus. The HD66724 is capable of displaying up to three 12-
character lines, 72-by-24 dot graphics and 144 segments. The HD66725 is capable of displaying up to
three 16-character lines, 96-by-24 dot graphics and 192 segments. Of the 144 (192) segments displayed, 48
(64) segments can be grayscaled. The HD66724/HD66725 have a smooth horizontal/vertical scroll display
and double-height display so that the user can easily see a variety of information within a small LCM.
The HD66724/HD66725 have various functions to reduce the power consumption of an LCD system such
as low-voltage operation of 1.8 V or less, a booster to generate maximum triple LCD drive voltage from the
supplied voltage, and voltage-followers to decrease the direct current flow in the LCD drive bleeder-
resistors. Combining these hardware functions with software functions such as standby and sleep modes
allows fine power control. The HD66724/HD66725 are suitable for any portable battery-driven product
requiring long-term driving capabilities and small physical dimensions such as cellular phones, pagers,
portable audio devices, or electronic wallets.
Features
Control and drive of a character and graphics LCD with built-in key scan functions
Three 12- (16-) character lines, 72 (96) -by-24 dot graphics, and 144 (192) segments
48 (64) grayscale segments
Control up to a 4
8 (32 key) matrix key scan.
3 general ports built-in
Low-power operation support:
HD66724/HD66725
2
Vcc = 1.8 to 5.5 V (low voltage)
V
LCD
= 3.0 to 6.5 V (liquid crystal drive voltage)
Single, double or triple booster for liquid crystal drive voltage
Contrast adjuster and voltage followers to decrease direct current flow in the LCD drive bleeder-
resistors
Wake-up feature using key scan interrupt
Programmable drive duty ratios and bias values displayed on LCD
Clock-synchronized serial interface
4-/8-bit bus interface capability (except when key scan circuit is used)
80
8-bit display data RAM (80 characters max)
20,736-bit (6
8 dots : 432 characters) character generator ROM
384
8-bit (64 characters) character generator RAM
96
2-bit (192 segment-icons and marks max) segment RAM
72- (96-) segment
26-common-signal liquid crystal display driver
Programmable display sizes and duty ratios
Vertical and horizontal smooth scrolls
Vertical double-height display
Selectable CGROM memory bank (max. 432 fonts)
Wide range of instruction functions:
Clear display, display on/off control, icon and mark control, character blink, black-white reversed
blinking cursor, return home, cursor on/off, black-white reversed raster-row
No wait time for instruction execution and RAM access (zero instruction)
Internal oscillation (with external or built-in resistor) hardware reset
Shift change of segment and common driver
Slim chip with bumps for chip-on-glass (COG) mounting, and tape carrier package (TCP)
Table 1
Progammable Display Sizes and Duty Ratios
Character Display
Graphics Display
Duty
Ratio
Optimum
Drive Bias
HD66724
HD66725
HD66724
HD66725
Segment
Display
Scanned
Keys
General
Ports
1/2
1/2
Unavailable
Unavailable
Unavailable
Unavailable
32 (4 x 8) 3
1/10
1/4
1 line x 12
characters
1 line x 16
characters
72 x 8 dots
96 x 8 dots
HD66724:
144
1/18
1/5
2 lines x 12
characters
2 lines x 16
characters
72 x 16 dots
96 x 16 dots
HD66725:
192
1/26
1/6
3 lines x 12
characters
3 lines x 16
characters
72 x 24 dots
96 x 24 dots
HD66724/HD66725
3
Total Current Consumption Characteristics (Vcc = 3 V, fosc = 32 kHz, TYP
Conditions, LCD Drive Power Current Included)
Total Power Consumption
Normal Display Operation
Character
Display Size
Duty
Ratio
Optimum
Drive Bias
Frame
Frequency
Internal
Logic
LCD
Power
Total*
Sleep
Mode
Standby
Mode
Segment only 1/2
1/2
80 Hz
(14
A)
(12
A)
(26
A)
(11
A) 0.1
A
1-line display
1/10
1/4
80 Hz
(20
A)
(17
A)
(54
A)
(11
A)
2-line display
1/18
1/5
74 Hz
(20
A)
(17
A)
(54
A)
(11
A)
3-line display
1/26
1/6
77 Hz
(20
A)
(17
A)
(54
A)
(11
A)
Note : When duty ratio = 1/2 and a double booster is not used:
the total power consumption = Internal logic current + LCD power current
When duty ratio = 1/10 and a double booster is used:
the total power consumption = Internal logic current + LCD power current x 2
Type Name
Types
External
Dimensions
Operation
Voltages
Internal Fonts
HD66724RA03TA0L
TCP
1.8 V to 5.5 V
Katakana, alphanumerics, symbols
HCD66724RA03BP
Au-bumped chip
and European fonts
HD66725A03TA0L
TCP
HCD66725A03BP
Au-bumped chip
HD66724/HD66725
4
LCD-II Family Comparison
Items
HD66712U
HD66720
HD66705U
Character display sizes
12 characters x 4 lines
8 characters x 2 lines
12 characters x 2 lines
Graphic display sizes
--
--
--
Multiplexing icons
60
42
40
Annunciator
--
--
Static: 10
Key scan control
--
5 x 6
--
LED control ports
--
2
--
General output port
--
--
--
Operating power voltages
2.7 V to 5.5 V
2.7 V to 5.5 V
2.4 V to 5.5 V
Liquid crystal drive voltages
3 V to 13 V
3 V to 11 V
3 V to 9 V
Serial bus
Clock-synchronized serial
Clock-synchronized serial
Clock-synchronized serial
Parallel bus
4 bits, 8 bits
--
4 bits, 8 bits
Expansion driver control
Possible
Possible
Impossible
Liquid crystal drive duty ratios
1/17, 33
1/9, 17
1/10, 18
Liquid crystal drive biases
1/4 to 1/6, 7
1/4 to 1/5
1/4
Liquid crystal drive waveforms
B
B
B
Liquid crystal voltage booster
Double or triple
Double or triple
Double or triple
Bleeder-resistor for liquid crystal drive
External
External
Incorporated (external)
Liquid crystal drive operational amplifier
--
--
Incorporated
Liquid crystal contrast adjuster
--
--
Incorporated
Horizontal smooth scroll
Dot unit
Dot unit
--
Vertical smooth scroll
--
--
Line unit
Double-height display
--
--
Yes
DDRAM
80 x 8
40 x 8
60 x 8
CGROM
9,600
9,600
9,600
CGRAM
64 x 8
64 x 8
32 x 5
SEGRAM
16 x 8
16 x 8
8 x 5
No. of CGROM fonts
240
240
240
No. of CGRAM fonts
8
8
4
Font sizes
5 x 8
5 x 8
5 x 8
Bit map area
--
--
--
R-C oscillation resistor/oscillation
frequency
External resistor (270 kHz)
External resistor (150 kHz)
External resistor
(40, 80 kHz)
Reset function
Incorporated, external
Incorporated, external
External
Low power control
LP display mode
LP display mode
Simple standby
Partial display off
Display off
Oscillation off
Liquid crystal power off
SEG/COM direction switching
--
--
SEG only
QFP package
(S mask)
QFP-1420
--
TQFP package
--
TQFP-1414
--
TCP package
TCP-128
--
TCP-153
Bare chip
Yes
Yes
Yes
Bumped chip
Yes
--
Yes
No. of pins
128
100
153
Chip sizes
4.95 x 5.27
5.60 x 6.00
9.69 x 2.73
Pad intervals
128
m
160
m
120
m
HD66724/HD66725
5
LCD-II Family Comparison (cont)
Items
HD66717
HD66727
HD66724
Character display sizes
12 characters x 4 lines
12 characters x 4 lines
12 characters x 3 lines
Graphic display sizes
--
--
72 x 26 dots
Multiplexing icons
40
40
144
Annunciator
Static: 10
Static: 12
1/2 duty: 144
Key scan control
--
4 x 8
8 x 4
LED control ports
--
3
--
General output ports
--
3
3
Operating power voltages
2.4 V to 5.5 V
2.4 V to 5.5 V
1.8 V to 5.5 V
Liquid crystal drive voltages
3 V to 13 V
3 V to 13 V
3 V to 6 V
Serial bus
I2C, Clock-synchronized
serial
I2C, Clock-synchronized
serial
Clock-synchronized serial
Parallel bus
4 bits, 8 bits
--
4 bits, 8 bits
Expansion driver control
Impossible
Impossible
Impossible
Liquid crystal drive duty ratios
1/10, 18, 26, 34
1/10, 18, 26, 34
1/2, 10, 18, 26
Liquid crystal drive biases
1/4, 1/6
1/4, 1/6
1/4 to 1/6.5
Liquid crystal drive waveforms
B
B
B
Liquid crystal voltage booster
Double or triple
Double or triple
Single, double or triple
Bleeder-resistor for liquid crystal drive
Incorporated (external)
Incorporated (external)
Incorporated (external)
Liquid crystal drive operational amplifier
Incorporated
Incorporated
Incorporated
Liquid crystal contrast adjuster
Incorporated
Incorporated
Incorporated
Horizontal smooth scroll
--
--
3-dot unit
Vertical smooth scroll
Line unit
Line unit
Line unit
Double-height display
Yes
Yes
Yes
DDRAM
60 x 8
60 x 8
80 x 8
CGROM
9,600
11,520
20,736
CGRAM
32 x 5
32 x 6
384 x 8
SEGRAM
8 x 5
8 x 6
72 x 8
No. of CGROM fonts
240
240
240 + 192
No. of CGRAM fonts
4
4
64
Font sizes
5 x 8
5 x 8, 6 x 8
6 x 8
Bit map area
--
--
72 x 26
R-C oscillation resistor/
oscillation frequency
External resistor
(40-160 kHz)
External resistor
(40-160 kHz)
External resistor,
incorporated (32 kHz)
Reset function
External
External
External
Low power control
Partial display off
Display off
Oscillation off
Liquid crystal power off
Partial display off
Display off
Oscillation off
Liquid crystal power off
Key wake-up interrupt
Partial display off
Display off
Oscillation off
Liquid crystal power off
Key wake-up interrupt
SEG/COM direction switching
SEG only
SEG, COM
SEG, COM
QFP package
--
--
--
TQFP package
--
--
--
TCP package
TCP-153
TCP-158
TCP-146
Bare chip
Yes
Yes
--
Bumped chip
Yes
Yes
Yes
No. of pins
153
158
146
Chip sizes
10.88 x 2.89
11.39 x 2.89
10.34 x 2.51
Pad intervals
120
m
120
m
80
m
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