INTRODUCTION
The ST7532 is a driver & controller LSI for 65K color graphic dot-matrix liquid crystal display systems. It generates 256 Segment and 160 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI), 8-bit/16-bit parallel or IIC display data and stores in an on-chip display data RAM. 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
    Driver Output Circuits
        −256 segment outputs / 160 common outputs
        −Maximum resolution is 128(SPRD) x 160.
    Applicable Duty Ratios
        − Various partial display
        − Partial window moving & data scrolling
    Microprocessor Interface
        − 8/16-bit parallel bi-directional interface with 6800-series or 8080-series
        −4-line serial interface (write only)
        −9 bit 3-line serial interface (write only)
    On-chip Display Data RAM
        − Capacity : 160 x 256 x 5bit = 204800bits (Max)
    On-chip Low Power Analog Circuit
        − On-chip oscillator circuit
        − Voltage converter (x2, x3, x4, x5, x6, x7, x8)
        − Voltage regulator
        − Voltage follower (LCD bias: 1/5, 1/7, 1/9, 1/10, 1/11, 1/12, 1/13, 1/14)
    Operating Voltage Range
        − Supply voltage (VDD, VDD1, VDD2, VDD3, VDD4, VDD5): 2.4 to 3.3V
        − LCD driving voltage (VLCD = V0 - VSS): 3.76 to 18.0 V
    Temperature Gradient Coefficient
        − -0.130%/℃ +/-10%
    LCD driving voltage (EEPROM)
        − To store contrast adjustment value for better display
    Package Type
        − Application for COG