INTRODUCTION
The S6B0741 is a driver & controller LSI for 4-level gray scale graphic dot-matrix liquid crystal display systems. It contains 128 segment and 129 common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI) or 8-bit parallel display data and stores in an on-chip display data RAM of 128 x 129 x 2 bits. It performs display data RAM read/write operation with no external 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
   4-level (White, Light Gray, Dark Gray, Black) Gray Scale Display with PWM and FRC Methods
   Driver Output Circuits
      - 128 segment outputs / 129 common outputs
   Applicable Duty Ratios
      - Various partial display
      - Partial window moving & data scrolling
   On-chip Display Data RAM
      - Capacity: 129 ´ 128 ´ 2 = 33,024bits
   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, ´5 or x6)
      - Voltage regulator (temperature coefficient: -0.125%/°C, or external input)
      - On-chip electronic contrast control function (64 steps)
      - Voltage follower (LCD bias : 1/5 to 1/12)
   Operating Voltage Range
      - Supply voltage (VDD): 1.8 to 3.3V
      - LCD driving voltage (VLCD = V0 - VSS): 4.0 to 15.0 V
   Low Power Consumption
      - 300 mA Max. (operation)
      - 2 mA Max. (sleep mode)
   Package Type
      - Slim chip for TCP