INTRODUCTION

The S6B0718 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 81 common and 104 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 89 x 104 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 / 104 segment outputs

Applicable Duty Ratios

- Various partial display

- Partial window moving & data scrolling

On-chip Display Data RAM

- Capacity: 89 x 104 = 9,256 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

- Serial interface (only write operation) available

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): 2.4 to 3.6 V

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

Low power Consumption

- 150 μA Max. (VDD = 3V, x5 boosting, V0 = 12V, internal power supply on and display OFF)

- 15 μA Max. (during power save [standby] mode)

Package Type

- Gold bumped chip or TCP