
S6B0759 PRELIMINARY SPEC. VER. 1.2
81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD
1
INTRODUCTION
The S6B0759 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 81 common
and 128 segment driver circuits. This chip is connected directly to a microprocessor, accepts serial or 8-bit parallel
display data and stores in an on-chip display data RAM of 81 x 128 bits. It provides a highly flexible display section
due to 1-to-1 correspondence between on-chip display data RAM bits and LCD panel pixels. And it performs display
data RAM read/write operation with no externally operating clock to minimize power consumption. In addition,
because it contains power supply circuits necessary to drive liquid crystal, it is possible to make a display system
with the fewest components.
FEATURES
Driver Output Circuits
81 common outputs / 128 segment outputs
Applicable Duty Ratios
Programmable duty ratio
1/17 to 1/81
Various partial display
Partial window moving & data scrolling
On-chip Display Data RAM
Applicable LCD bias
1/4 to 1/11
Maximum display area
81
×
128
Microprocessor Interface
Capacity: 81 x 128 = 10,368 bits
Bit data "1": a dot of display is illuminated.
Bit data "0": a dot of display is not illuminated.
On-chip Low Power Analog Circuit
On-chip oscillator circuit
Voltage converter (x3, x4, x5 or x6)
Voltage regulator (temperature coefficient: -0.05%/
°
C or external input)
On-chip electronic contrast control function (64 steps)
Voltage follower (LCD bias: 1/4 to 1/11)
Operating Voltage Range
8-bit parallel bi-directional interface with 6800-series or 8080-series.
SPI (Serial Peripheral Interface) available. (only write operation)
Low power Consumption
Supply voltage (V
DD
): 1.8 to 3.3 V
LCD driving voltage (V
LCD
= V0 - V
SS
): 4.0 to 15.0 V
Package Type
Gold bumped chip or TCP
TBD
μΑ
Typ. (Internal power supply on and display OFF)