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S6B0759

81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD

Samsung 

S6B0759

PRELIMINARY SPEC. VER. 1.2

81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD

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

Applicable LCD bias

1/17 to 1/81

− Various partial display

− Partial window moving & data scrolling

1/4 to 1/11

On-chip Display Data RAM

− 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.

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, 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

− Supply voltage (VDD): 1.8 to 3.3 V

− LCD driving voltage (VLCD = V0 - VSS): 4.0 to 15.0 V

Low power Consumption

− TBD µΑ Typ. (Internal power supply on and display OFF)

Package Type

− Gold bumped chip or TCP

Maximum display area

81 × 128

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