ST7626 Datasheet, PDF (1/94 Pages) Sitronix Technology Co., Ltd. – 65K Color Dot Matrix LCD Controller/Driver

ST
Sitronix
ST7626
1. INTRODUCTION
65K Color Dot Matrix LCD Controller/Driver
The ST7626 is a driver & controller LSI for 65K color graphic dot-matrix liquid crystal display systems. It generates 294
Segment and 68 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
♦ 294 Segment Outputs / 68 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.
On-chip Display Data RAM
♦ Capacity: 98 x 68 x 16 =106,624 bits
♦ 4K colors (RGB)=(444) mode
♦ 65K colors (RGB)=(565) mode
♦ Truncated 262K colors (RGB)=(666) mode
♦ Truncated 16M colors (RGB)=(888) mode
Microprocessor Interface
♦ 8/16-bit parallel bi-directional interface with 6800-series
or 8080-series
♦ 4-line serial interface (4-line-SIF)
♦ 3-line serial interface (3-line-SIF)
On-chip Low Power Analog Circuit
♦ On-chip Oscillator Circuit
♦ On-chip Voltage Converter (x2, x3, x4, x5) with internal
booster capacitors.
♦ Extremely Few Outsider Compoment. (Minimum required
outsider compoments: One Capacitor).
♦ On-chip Voltage Regulator (Temperature gradient =
-0.065%/°C)
♦ On-chip Electronic Contrast Control Function (406 steps)
♦ Voltage Follower (LCD bias: 1/5 to 1/12)
Operating Voltage Range
♦ Supply Digital Voltage (VDD, VDD1): 1.8 to 3.3V
♦ Supply Analog Voltage (VDD2, VDD3, VDD4, VDD5): 2.4
to 3.3V
♦ LCD Driving Voltage (VOP = V0 - VSS): 3.76V to 18V
♦ The suggested value of V0 is under 11 V with bias =1/9.
LCD Driving Voltage (EEPROM)
♦ Contrast Adjustment Value is stored in the Built-In
EEPROM for better display quility.
LCM Performance Adjustment (EEPROM)
♦ Adjustment Value for best Display Performance is stored
in the Built-In EEPROM.
Package Type
♦ Application for COG
ST7626 6800 , 8080 ,4-Line , 3-Line interface
Ver 1.5
1/94
2007/01/20