ST7624 Datasheet, PDF (1/98 Pages) Sitronix Technology Co., Ltd. – 65K Color Dot Matrix LCD Controller/Driver

ST
Sitronix
ST7624
1. INTRODUCTION
65K Color Dot Matrix LCD Controller/Driver
The ST7624 is a driver & controller LSI for 65k color graphic dot-matrix liquid crystal display systems. It generates 312
Segment and 104 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
♦ 312 segment outputs / 104 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: 104X104X16 =173,056bits
♦ 65K colors (RGB)=(565) mode
♦ Dithered262k colors (RGB)=(666) mode
♦ Dithered 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
♦ Voltage converter (x2, x3, x4, x5, x6, x7, x8)
♦ Voltage regulator(Temperature gradient= -0.119%/°C
+-10%)
♦ On-chip electronic contrast control function
♦ Voltage follower (LCD bias: 1/5 to 1/12)
Operating Voltage Range
♦ Supply voltage (VDD, VDD1): 2.4 to 3.3V
(VDD2, VDD3, VDD4, VDD5): 2.4 to
3.3V
♦ LCD driving voltage (VOP = V0 - VSS): 3.76 to 18.0 V
♦ Suggested value of V0 is 12V~15V , bias =1/11
LCD driving voltage (EEPROM)
♦ To store contrast adjustment value for better display
Package Type
♦ Application for COG
ST7624 6800 , 8080 ,4-Line , 3-Line interface
Ver 1.8
1/98
2006/08/15