
64 SEG / 26 COM DRIVER & CONTROLLER FOR STN LCD
S6A0090
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INTRODUCTION
The S6A0090 is an LCD driver and controller LSI for liquid crystal dot matrix character display systems. It can
display 2 or 3 lines of 12 characters with 5 x 8 dots format. It is capable of interfacing with various
microprocessors, supporting the 4-bit and 8-bit parallel mode and the clock synchronized serial mode. Voltage
converter (2 or 3 times), voltage regulator, divider resistor and voltage follower OP AMP are built in the IC and a
low operation current of 50
μ
A is achieved. The slim shape of the chip makes it suitable for the COG module
application and TCP. The S6A0090 is an ideal solution for display on portable equipment such as cellular phones.
FEATURES
Driver Outputs
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Common outputs: 26 common
Segment outputs: 64 segment
Icons: 128 horizontal icons, 24 x 4 vertical icons, 5 static icons
Applicable Panel Size
Display size
Duty
Contents of outputs
2-line x 12 characters
1/18
(12 characters + 4 segments for signal) x 2 + 128 icons + 5 static icons
3-line x 12 characters
1/26
(12 characters + 4 segments for signal) x 3 + 128 icons + 5 static icons
Internal Memory
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Character Generator ROM (CGROM): 10,240 bits (256 characters x 5 x 8 dots)
Character Generator RAM (CGRAM): 160 bits (4 characters x 5 x 8 dots)
Display Data RAM (DDRAM): 288 bits (12 characters x 3 lines x 8 bits)
Segment Icon RAM (ICONRAM): 224 bits (12 x 2 x 5 bits + 2 x 4 bits + 24 x 4 bits)
MPU Interface
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No busy MPU interface (no busy check or no execution waiting time)
8-bit parallel interface mode: 68-series and 80-series are available
4-bit parallel interface mode: 68-series and 80-series are available
Serial interface mode: 4 pins clock synchronized serial interface
Function Set
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Various instructions set: display control, power save, power control, function set, etc.
COM / SEG bi-directional function (4 types of LCD application available)
Hardware reset (RES pin)
Built-in Analog Circuit
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On-chip oscillator with an internal resistor or external clock input
Electronic volume for contrast control (32 or 64 steps)
Voltage converter (2 or 3 times) / voltage regulator / voltage follower and bias circuit