a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
1. Introduction
The GC9307 is a 262,144-color single-chip SOC driver for a-TFT liquid crystal display with resolution of 240RGBx320dots, comprising a 720-channel source driver, a 320-channel gate driver, 172,800 bytes GRAM for graphic display data of 240RGBx320 dots, and power supply circuit.
The GC9307 supports parallel 8-/9-/16-/18-bit data bus MCU interface, 6-/16-/18-bit data bus RGB interface and 3-/4-line serial peripheral interface (SPI) and 2 lane SPI data transmission. The moving picture area can be specified in internal GRAM by window address function. The specified window area can be updated selectively, so that moving picture can be displayed simultaneously independent of still picture area.
The GC9307 can operate with 1.65V ~ 3.3V I/O interface voltage and an incorporated voltage follower circuit to generate voltage levels for driving an LCD. GC9307 supports full color, 8-color display mode and sleep mode for precise power control by software and these features make the GC9307 an ideal LCD driver for medium or small size portable products such as digital cellular phones, smart phone, MP3 and PMP where long battery life is a major concern.
2. Features
No need for external electronic component
Display resolution: [240xRGB](H) x 320(V)
Output:
- 720 source outputs
- 320 gate outputs
a-TFT LCD driver with on-chip full display RAM: 172,800 bytes
System Interface
- 8-bits, 9-bits, 16-bits, 18-bits interface with 8080-I /8080-II series MCU
- 6-bits, 16-bits, 18-bits RGB interface with graphic controller
- 8-bits, 9-bits Serial Peripheral Interface (SPI) and 2 data lane SPI
Display mode:
- Full color mode (Idle mode OFF): 262K-color (selectable color depth mode by software)
- Reduce color mode (Idle mode ON): 8-color
Power saving mode:
- Sleep mode
On chip functions:
- Timing generator
- Oscillator
- DC/DC converter
- Dot/column inversion
Low -power consumption architecture
- Low operating power supplies:
IOVCC = 1.65V ~ 3.3V (logic)
VCI = 2.5V ~ 3.3V (analog)
LCD Voltage drive:
- Source/Gamma power supply voltage
AVDD - GND = 6.5V ~7.5V
AVEE - GND = -5.5V ~ -4.5V
AVDD_SOU - GND = 6.5V ~ 7.5V
AVEE_SOU - GND = -5.5V ~ -4.5V
VCL - GND = -3.0V ~ -1.5V
- Gate driver output voltage
VGH - GND = 10.0V ~ 12.0V
VGL - GND = -11.0V ~ -9.0V
VGH - VGL ≦23V
Operate temperature range: -40℃to 80℃
a-Si TFT LCD storage capacitor : Cst on Common structure only
GC9307_DS_V1.01 Specification Download PDF-LCD manufacturers
