ST7624
65K Color Dot Matrix LCD Controller/Driver
Product Description
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.
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%/¢XC)
-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(+10% range)
(VDD2, VDD3, VDD4, VDD5): 2.4 to 3.3V(+10% range)
-LCD driving voltage (VOP = V0 - VSS): 4.5 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
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