INTRODUCTION The S6B0721 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. It contains 65 commons and 132 segments 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 132 bits. It provides a high-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 / 132 segment outputs On-chip Display Data RAM - Capacity: 65 x 132 = 8,580 bits Applicable Duty Ratios Microprocessor Interface - 8-bit parallel bi-directional interface with 6800-series or 8080-series - Serial interface (only write operation) available Function Set - Various instructions sets - H/W, S/W reset capable Built-in Analog Circuit - On-chip oscillator circuit - Voltage converter (x2, x3, x4, x5) - Voltage regulator (temperature coefficient: -0.05%/°C, -0.2%/°C) - Voltage follower - Electronic contrast control function (64 steps) 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 - 70 μA Typ. (VDD = 3V, x4 boosting, V0 = 11V, internal power supply ON) - 10 μA Max. (during power save [standby] mode) Package Type - Gold bump chip or TCP
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