SPLC100A1
40-CHANNEL SEG/COM LCD DRIVER
GENERAL DESCRIPTION
The SPLC100A1 is a Liquid Crystal Display driver that contains two sets of 20-bit bi-directional shift registers, 20
data latch flip-flops and 20 Liquid Crystal Display drivers. It also features 40-channel outputs that can be applied
as common or segment driver.
The SPLC100A1 receives serial display data from a display control LSI,
converts it into parallel data and supplies liquid crystal display waveforms to the liquid crystal.
FEATURES
Liquid Crystal Display driver with serial/parallel
BLOCK DIAGRAM
Y1
Y20
conversion function.
V1,V2
Serial transfer facilitates board design.
Capable of interfacing to liquid crystal display
controllers: HD43160AH, HD61830, HD44780,
HD44790, SPLC780
40 internal LCD drivers.
Internal serial/parallel conversion circuits:
鈥?/div>
20-bit
鈥?/div>
20-bit
V3,V4
LCD Drivers
Latch signal
CL1
DL1
CL2
DL2
FCS
M
V1,V2
V5,V6
Data
Shift signal
20-bit latch
20-bit bidirectional shift register
Switching circuit
20-bit bidirectional shift register
Data
20-bit latch
LCD Drivers
Shift
direction
Data
Data
Shift
direction
SHL1
DR1
DR2
SHL2
shift register
latch 2
2
Y21
Y40
Power supply:
鈥?/div>
鈥?/div>
Internal logic: 2.7V 鈥?5.5V
Liquid crystal display driver circuit: 3.0V 鈥?11.0V
CMOS process.
Sunplus Technology Co., Ltd.
1
Rev.: 1.0
1999.10.04
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