ST7625 Datasheet, PDF (1/160 Pages) Sitronix Technology Co., Ltd. – 65K Color Dot Matrix LCD Controller/Driver

ST
Sitronix
ST7625
1. INTRODUCTION
65K Color Dot Matrix LCD Controller/Driver
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.
2. 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
ST7625-G3
Chip thickness=400um
ST7625-G4
Chip thickness=300um
Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice.
Ver 1.6
1/160
2008/07