* This specification are subject to be changed without notice.

EM32117

16 DIGIT LCD DRIVER WITH CHECK TIME FUNCTION

3.17.1999

Preliminary

SEG25

SEG24

SEG23

SEG22

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

TEST

EM32117Q

XOUT

XIN

VC2

VC1

HKS

SD1

MS2

MS1

SPARE1

SPARE2

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

COM0

COM1

COM2

COM3

ENCLND*

ENRTC*

24/12*

GENERAL DESCRIPTION

EM32117 is a CMOS 16-digit LCD panel driver. The EM32117 can receive dialing information such as dialing
digits, Pause, Flash, Pulse to Tone mode from EMC EM91465 series dialer IC and display the corresponding
pattern on the LCD panel. The EM32117 also supports various indicators such as the icons of STORE, SAVE,
Speaker phone (or Hand-Free), Lower or Upper page, Hold, etc. to support high-end feature phone applications.
The EM32117 can operate in stand-alone mode to display calendar and real time clock, conversation time
(stopwatch). The EM32117 also provides check the last conversation time function.

FEATURES

� ON-HOOK check last conversation time function.
� General flag display function for LOGO indication.
� Low power consumption: 1.5

�

A (max.)

� Uses single clock 32768 Hz crystal (with built-in capacitor, no need extra capacitor).
� LCD blank 2 sec after OFF-HOOK, to protect the STW data.
� Built-in serial data interface (compatiable with EM91465 series).
� Driver for 4.5-volt, 16-digit, 1/4 duty , 1/3 bias LCD panel with built-in voltage tripler circuit.
� Display dialing phone number.
� Display calendar and real time clock (RTC) in 12 hour or 24 hour format.
� Stopwatch function for counting conversation time up to 59 minutes 59 seconds.
� Operating voltage: 1.5 VDC ( typical )
� Dice form, QFP 80 pin package, and LCM (Liquid Crystal display Module) are available.

APPLICATION

� LCD Feature phone and Digital display system.

PIN ASSIGMENT

Preliminary

EM32117

16 DIGIT LCD DRIVER WITH CHECK TIME FUNCTION

* This specification are subject to be changed without notice.

3.17.1999

Pin Name

Description

SPARE1, SPARE2

Need to be connected to V

COM0~COM3

LCD panel driver common output pins.

SEG0~SEG31

LCD panel driver segment output pins.

TEST

Reserved for testing, should be left open.

MS1

Manual setting and check last conversation time input pin 1, with built-in pull-up optimal
resistor. The optimal resistor before keying=100k

, after keying change to 1M

for

reducing power consumption.

MS2

Manual setting input pin 2 with built-in pull-up; optimal resistor. The
optimal resistor before keying=100k

, after keying change to 1M

for reducing power

consumption.

SDI

Serial data input pin with built-in 150 K

pull-up resistor.

HKS

Hook switch status input pin with built-in 1 M

pull-up resistor.

Positive power supply pin.

V2, V3

Voltage tripler circuit for LCD driver.

VC1, VC2

Voltage tripler circuit for LCD driver.

XIN, XOUT

Crystal input and output pins for connecting a 32768Hz crystal (Internal built-in 2-p

capacitor).

24/12

RTC display 24 or 12 hours format selection pin (when this pin is pulled "high, RTC will
be displayed in 24 hour format. Otherwise will be display in 12 hour format).

ENCLND

Calendar enable pin. When disabled (ENCLND* = high), the Calendar field of LCD
panel will be blanked. When 12 digit LCD panels are used, Calendar should be disable
to suppress output of calendar.

ENRTC

RTC enable pin. When disabled (ENRTC* = high), the LCD panel will be blanked when
HKS pin is at high level.

General Flag input pin without built-in resistor. When GF pull "High" LCD panel will
display Icon. GF pull "Low", "GF" Icon will blank.

FUNCTION BLOCK DIAGRAM

PIN DESCRIPTION

SEG0~31

COM0~3

1/4 Duty 1/3 bias LCD Driver

Serial Data

Sampling

Decoding

Serial Data

Display Buffer

RTC/STW

Counter

Timing

Control

Circuit

ENCLND

ENRTC

24/12
HKS
MS2
MS1

TEST

Sampling

Signal

Generator

OSC

Power

Supply
Circuit

XIN

XOUT

VDD

VSS

SD1

* This specification are subject to be changed without notice.

EM32117

16 DIGIT LCD DRIVER WITH CHECK TIME FUNCTION

3.17.1999

Preliminary

SEG31

SEG30

SEG29

SEG28

SEG27

SEG26

SEG25

SEG24

COM3

16f

16a

15f

15a

14f

14a

13f

13a

COM2

16g

16b

15g

15b

14g

14b

13g

13b

COM1

16e

16c

15e

15c

14e

14c

13e

13c

COM0

16d

15d

14d

13d

SEG23

SEG22

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

COM3

12f

12a

11f

11a

10f

10a

COM2

12g

12b

11g

11b

10g

COM1

12e

12c

11e

11c

10e

10c

COM0

12d

11d

Speaker

10d

HOLD

Memory

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

COM3

COM2

COM1

COM0

ALARM

STORE

PAGE

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

COM3

COM2

COM1

COM0

AUTO

LOCK

SAVE

MUTE

LCD Panel Description

The display font of the EM32117 LCD driver is shown as the following:

Digit #

PAUSE TONE

LO BATT

ALARM

PAGE

STORE

MEMORY

SPEAKER

HOLD

AUTO

LOCK

SAVE

MUTE

BLANK

DASH

COM3

COM2

COM1
COM0

ALARM

PAGE

STORE

MEMORY

SPEAKER

HOLD

AUTO

LOCK

SAVE

MUTE

Preliminary

EM32117

16 DIGIT LCD DRIVER WITH CHECK TIME FUNCTION

* This specification are subject to be changed without notice.

3.17.1999

Figure 2 - Segment pin wiring diagram

Serial Data Interface

Since the serial data transmitters (e.g. EM91465 series dialers) may have different voltage level from EM32117,
therefore the following interconnecting scheme is recommended when using the EM32117 as a serial data
receiver. The SDO output from the serial data transmitters should be of NMOS open-drain structure as shown
below.

Data Format

When the EM32117 senses the falling edge of the Start bit, it will sample subsequent bits in the middle of each
bit. The received bit will then be assembled and decoded, and corresponding pattern will be displayed on LCD
panel. The serial data format is as follows:

Protocol

There are three categories of dialing data, and representation and interpretation of serial data is as the following:

(Note: Codes 0000 and 1111 will be interpreted as" " (blank pattern) and"-"patterns, respectively and they

will shift on LCD panel just as other digit codes.

VCC

EM32117

Dialer

SDO

SDI

Vss

Start Bit

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Stop Bit

Data Bits

SEG30

SEG31

SEG28

SEG29

SEG26

SEG27

SEG24

SEG25

SEG22

SEG23

SEG20

SEG21

SEG18

SEG19

SEG16

SEG17

SEG14

SEG15

SEG12

SEG13

SEG10

SEG11

SEG8

SEG9

SEG6

SEG7

SEG4

SEG5

SEG2

SEG3

SEG0

SEG1

ALARM

PAGE

STORE

MEMORY

SPEAKER

HOLD

AUTO LOCK

SAVE

MUTE

* This specification are subject to be changed without notice.

EM32117

16 DIGIT LCD DRIVER WITH CHECK TIME FUNCTION

3.17.1999

Preliminary

Note:

1. Flash key will be treated as "clear LCD panel" command.
2. When lock condition establish.
3. MUTE and ALARM indicators will toggle with each received SDI code.
4. Any invalid data will be ignored by the EM32117.

� General flag display function. EM32117 provide General Flag Icon, when GF pin pull "high", then "GF" Icon

will be displayed. GF pin pull "low", the "GF" Icon will blank. The "GF" Icon can identify by user for special
distinguishment.

Keypad,SDO format and LCD display reference table:

Keypad

bit5

bit4

bit3

bit2

bit1

bit0

Display

"*"/T

*/"T"

STORE

HOLD

Speaker

Page

PAGE

clear all display

(Lock state)

Lock

MUTE

Note 3

ALARM

EM1~EM3

MEMORY

M1~M40

MEMORY

SAVE

FUNCTION DESCRIPTION

Operation Modes and System States

Depending on which state the EM32117 is in, the system will operate in one of two modes, namely, RTC mode
and Stop-watch mode. In the State 1, as defined by the State-diagram in figure 4, the system operates in Real-
Time Clock mode, otherwise, the system operates in Stop-Watch mode. The flow chart is as follows:

Электронный компонент: EM32117