ST7637 Datasheet, PDF (1/210 Pages) Sitronix Technology Co., Ltd. – 65K 132x132 Color Dot Matrix LCD Controller/Driver

ST
Sitronix
ST7637
65K 132x132 Color Dot Matrix LCD Controller/Driver
1. INTRODUCTION
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
♦ 3-line (9-bits) serial interface
Driver Output Circuits
On-chip Low Power Analog Circuit
♦ 396 segment outputs / 132 common outputs
♦ On-chip oscillator circuit
Applicable Duty Ratios
♦ Voltage converter (x2~x8) with internal capacitors.
♦ Various partial display
♦ Extremely Few Outsider Components. (3 Capacitors)
♦ Partial window moving & data scrolling
♦ On-chip Voltage Regulator
Gray-Scale Display
♦ On-chip electronic contrast control function
♦ 4FRC & 31 PWM function circuit to display 64
♦ Voltage follower (LCD bias: 1/5~1/12)
gray-scale display
Operating Voltage Range
♦ Support 8 color mode (Idle mode)
♦ Supply Digital Voltage (VDD, VDD1): 1.65 to 3.0V
On-chip Display Data RAM
♦ Supply Analog Voltage (VDD2~VDD5): 2.4 to 3.3V
♦ Capacity: 132 x 132 x 16 =278,784 bits
♦ LCD driving voltage (VOP = V0 - VSS): Max: 18V
Color support by Interface
LCD Driving Voltage (OTP)
♦ 256 colors (RGB)=(332) mode
♦ Contrast Adjustment Value is stored in the Built-In
♦ 4k colors (RGB)=(444) mode
OTP-ROM for better display quality.
♦ 65K colors (RGB)=(565) mode
LCD Driving setting suggestion
♦ Truncated 262K colors (RGB)=(666) mode
♦ VOP = 14V, BIAS=1/9. (VDD=2.8V)
♦ Truncated 16M colors (RGB)=(888) mode
♦ VOP=15.5V,BIAS=1/10. (VDD=2.8V)
Microprocessor Interface
Package Type
♦ 8/16-bit parallel bi-directional interface with 6800-series ♦ Application for COG
or 8080-series
♦ 4-line serial interface
ST7637 6800, 8080, 4-Line, 3-Line interface
Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice.
Ver 1.6
1/210
2009/03