ST7687S
65K 128x128 Color Dot Matrix LCD Controller/Driver
Product Description
The ST7687S is a driver & controller LSI for 65K color graphic dot-matrix liquid crystal display systems. It generates 384
Segment and 128 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral
Interface (SPI) or 8-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
- 384 segment outputs / 128 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: 128 x 128 x 16 =262,144 bits
- Color support by Interface
- 4k colors (RGB)=(444) mode
- 65K colors (RGB)=(565) mode
- Microprocessor Interface
- 8 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
- Voltage converter (x2~x8) with internal capacitors.
- Extremely Few Outsider Components.
- On-chip Voltage Regulator
- On-chip electronic contrast control function
- Voltage follower (LCD bias: 1/6~1/12)
- Operating Voltage Range
- Supply Digital Voltage (VDD): 1.65 to 3.3V
- Supply Analog Voltage (VDD2~VDD5): 2.4 to 3.3V
- LCD driving voltage (VOP = V0 - VSS): Max: 18V
- LCD Driving Voltage
- Contrast Adjustment Value is stored in the Built-In EEPROM for better display quality.
- LCD Driving setting suggestion
- VOP = 14V, BIAS=1/9. (VDD=2.8V)
- Package Type
- Application for COG
Downloads
| File |
Size |
Version |
Creation Date |
Specification | 2630K | V 1.6 | 2010/02/05 | |
|