Syntek GSM793E Datasheet

GSM793E

Syntek Semiconductor Co., Ltd.

(80CH Segment Driver For Dot Matrix LCD)

Introduction :

GSM793E is a segment driver for dot matrix type LCD display. It features 80
channels with 40 X 2 bits bi-directional shift registers, data latches, LCD drivers
and logic control circuits. It is fabricated by high voltage CMOS process with
low current consumption.

The GSM793E can convert serial data received from an LCD controller, such as
GSM7980, into parallel data and send out LCD driving waveforms to the LCD
panel. The GSM793E is designed for general purpose LCD drivers. It can drive
both static and dynamic drive LCD. The LSI can be used as segment driver.

The GSM793E has pin function compatibility with the KS0063(B) that allows
the user to easily replace it with an GSM793E.

Functions :

l Dot matrix LCD driver with two 40 channel outputs
l Bias voltage (V1 ~ V4)
l input/output signals

n Input : Serial display data and control pulse from controller IC
n Output : 40 X 2 channels waveform for LCD driving

Features :

l Display driving bias : static to 1/5
l Power supply for logic : 2.7V ~ 5.5V
l Power supply for LCD voltage (VDD~VEE) : 3V ~ 11V

100 Pin QFP package and bare chip available

LCD Controller /Driver 1 /10 V1.1

SEGMENT DRIVE

RSEGMENT DRIVERDATA LATCH(40BITs)DATA LATCH(40BITs)BIDIRECTIONA

LSHIFTER(40BITs)BIDIRECTIONALSHIFTER(40BITs)CONTO

L

V1

V2

V3

V4MCL1CL

2

DL1 SHL1 DR1 DL2 SHL2 DR2

S1 ...................S40 S41…………S80VD

D

VSSVE

E

GSM793E FUNCTIONAL BLOC

K

GSM793E

Syntek Semiconductor Co., Ltd.

LCD Controller /Driver 2 /10 V1.1

GSM793E

Syntek Semiconductor Co., Ltd.

Pin Description :

PIN NAME PURPOSE DESCRIPTION I/O

VDD POWER for logic N/A
VSS GROUND for logic N/A

VEE LCD GND for LCD driving voltage N/A
V1 V2 LCD output used as select voltage level I
V3 V4 LCD output used as non select voltage level I

S1-S40 segment LCD driver output for part 1 O

SHL1 direction direction control for part 1 segments I

DL1, DR1 data in /out If SHL1 = 1 then DL1=out, DR1=in

If SHL1 = 0 then DL1=in, DR1=out

S41-S80 segment LCD driver output for part 2 O

SHL2 direction direction control for part 2 segments I

DL2, DR2 data in/out If SHL2 = 1 then DL2=out, DR2=in

If SHL2 = 0 then DL2=in, DR2=out

M alternation Alternate the LCD driving waveform I
CL1 latch clock latch the data after shift is completed I
CL2 shift clock shift the data into the segments I

I/O

I/O

LCD Controller /Driver 3 /10 V1.1