INTRODUCTION
The ST7625 is a driver & controller LSI for 65K color graphic dot-matrix liquid crystal display systems. It generates 306 Segment and 96 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI) or 8-bit/16-bit parallel 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
    ♦ 306 Segment Outputs / 96 Common Outputs
Applicable Duty Ratios
    ♦ Various Partial Display
    ♦ Partial Window Moving & Data Scrolling
Gray-Scale Display
    ♦ 4FRC & 31 PWM function circuit to display
    ♦ 64 gray-scale display
    ♦ Support 8 color mode (Idle mode)
On-chip Display Data RAM
    ♦ Capacity: 102 x 96 x 16 =156,672 bits
Color support by Interface
    ♦ 256 color mode, (RGB)=(332) mode
    ♦ 4K color mode, (RGB)=(444) mode
    ♦ 65K color mode, (RGB)=(565) mode
    ♦ Truncated 262K color mode, (RGB)=(666) mode
    ♦ Truncated 16M color mode, (RGB)=(888) mode
Microprocessor Interface
    ♦ 8/16-bit parallel bi-directional interface with 6800-series or 8080-series
    ♦ 4-line serial interface
    ♦ 3-line (9-bits) serial interface
On-chip Low Power Analog Circuit
    ♦ On-chip Oscillator Circuit
    ♦ On-chip Voltage Converter (x2, x3, x4, x5, x6, x7, X8) with internal booster capacitors.
    ♦ Extremely Few Outsider Components. (Required outsider components: Three Capacitors)
    ♦ On-chip Voltage Regulator
    ♦ On-chip Electronic Contrast Control Function
    ♦ Voltage Follower (LCD bias: 1/5~1/12)
Operating Voltage Range
    ♦ Supply Digital Voltage (VDD, VDD1): 1.65 to 3.0V
    ♦ Supply Analog Voltage (VDD2, VDD3, VDD4, VDD5): 2.4 to 3.3V
    ♦ LCD Driving Voltage (VOP = V0 - VSS): Max to 18V
LCD Driving Voltage (OTP)
    ♦ Contrast Adjustment Value is stored in the Built-In OTP-ROM for better display quality.
LCD Driving setting suggestion
    ♦ VOP = 11V, BIAS=1/9. (VDD=2.8V)
Package Type
    ♦ Application for COG