S6B0755 Datasheet, PDF (4/68 Pages) Samsung semiconductor – 128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD

S6B0755
PRELIMINARY SPEC. VER. 1.0
128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD
INTRODUCTION
The S6B0755 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 65
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 65 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
− 65 common outputs / 128 segment outputs
Applicable Duty Ratios
Programmable duty ratio
Applicable LCD bias
1/17 to 1/65
− Various partial display
− Partial window moving & data scrolling
1/4 to 1/9
On-chip Display Data RAM
− Capacity: 65 x 128 = 8,320 bits
− Bit data "1": a dot of display is illuminated.
− Bit data "0": a dot of display is not illuminated.
Microprocessor Interface
− 8-bit parallel bi-directional interface with 6800-series or 8080-series.
− SPI (Serial Peripheral Interface) available. (only write operation)
On-chip Low Power Analog Circuit
− On-chip oscillator circuit
− Voltage converter (x3, x4 or x5)
− 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 1/9)
Operating Voltage Range
− Supply voltage (VDD): 1.8 to 3.3 V
− LCD driving voltage (VLCD = V0 - VSS): 4.0 to 15.0 V
Low power Consumption
− 120 µΑ Typ. (Internal power supply on and display OFF)
Package Type
− Gold bumped chip or TCP
Maximum display area
65 × 128
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