ST7637

ST Sitronix 1. INTRODUCTION ST7637 65K 132x132 Color Dot Matrix LCD Controller/Driver The ST7637 is a driver & controller LSI for 65K color graphic dot-matrix liquid crystal display systems. It generates 396 Segment and 132 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. 2. FEATURES Driver Output Circuits ♦ 396 segment outputs / 132 common outputs ♦ 3-line (9-bits) serial interface On-chip Low Power Analog Circuit ♦ On-chip oscillator circuit ♦ Voltage converter (x2~x8) with internal capacitors. ♦ Extremely Few Outsider Components. (3 Capacitors) ♦ On-chip Voltage Regulator ♦ On-chip electronic contrast control function ♦ Voltage follower (LCD bias: 1/5~1/12) 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) Operating Voltage Range ♦ Supply Digital Voltage (VDD, VDD1): 1.65 to 3.0V ♦ Supply Analog Voltage (VDD2~VDD5): 2.4 to 3.3V ♦ LCD driving voltage (VOP = V0 - VSS): Max: 18V On-chip Display...