### ILI9325C – a-SiTFT LCD Single Chip Driver
The document titled "ILI9325C_AN_V0.1.pdf" provides detailed information about the ILI9325C, an advanced single-chip driver for a-Si TFT LCDs (Amorphous Silicon Thin Film Transistor Liquid Crystal Displays). This chip supports a resolution of 240RGBx320 and displays 262K colors. The document serves as an application note that guides users through the implementation of this chip in different panels from various manufacturers.
#### Key Features and Specifications:
1. **Resolution and Color Depth**: The ILI9325C is designed to support a display resolution of 240RGBx320 pixels with a color depth of 262K colors. This makes it suitable for applications requiring high-quality visual output in compact form factors.
2. **Interface Support**: The chip supports multiple interface options including i80-system 8-bit and 9-bit interfaces, i80-system 16-bit interface, and an 8-bit 4-wire Serial Peripheral Interface (SPI). These versatile interfaces allow for flexible integration with different system designs.
3. **Panel Compatibility**: The application note includes sections dedicated to configuring the ILI9325C for use with panels from various manufacturers such as CPT (Chi Mei Optoelectronics), AUO (AU Optronics), WINTEK, CMO (Chunghwa Picture Tubes), and HYDIS. Each section contains initial code configurations specific to the panel size (e.g., 2.4", 2.6", 2.8").
4. **Power Supply and Signal Connections**:
- **IOVCC**: This pin supplies the necessary power for the digital circuits within the chip.
- **VGH/VGL**: These pins provide the high and low voltage levels required for the TFT operation.
- **VCOM**: This pin sets the common voltage for the display.
- **LED+/-**: These pins control the backlight intensity of the LCD.
5. **Initialization Code**:
- For each manufacturer and panel size, there is a section dedicated to the initialization code. This code is crucial for configuring the display parameters correctly, such as setting the resolution, enabling specific features, and adjusting the timing settings.
6. **Control Registers**: When using the RGB interface, the SPI interface can be used to control the registers within the ILI9325C. This allows for fine-tuning of the display's performance and appearance.
7. **Revision History**: The document includes a revision history section, which documents any changes or updates made to the application note over time. This helps users stay informed about any improvements or corrections in the documentation.
#### Panel Configuration Guidelines:
1. **CPT Panels**:
- **2.4" Panel**:
- Initialization code is provided to set up the display for optimal performance.
- **2.8" Panel**:
- Similar to the 2.4" panel, but with specific adjustments for the larger screen size.
2. **AUO Panels**:
- **2.4" Panel**:
- Includes configuration details for the AUO 2.4" panel.
- **2.6" Panel**:
- Provides initialization code tailored for the AUO 2.6" panel.
3. **WINTEK Panels**:
- **2.4" Panel**:
- Specific initialization code for WINTEK 2.4" panels is included.
- **2.8" Panel**:
- Configuration details for the WINTEK 2.8" panel are provided.
4. **CMO Panels**:
- **2.4" Panel**:
- Initial code for the CMO 2.4" panel is documented.
5. **HYDIS Panels**:
- **2.4" Panel**:
- Initialization code for the HYDIS 2.4" panel is outlined.
#### Notes on Unused Pins and Interfaces:
- If certain signals like VSYNC, HSYNC, DOTCLK, ENABLE, and SDI are not utilized, they should be connected to GND.
- If SDO is not used, it should be left open.
- Unused DB pins should also be connected to GND.
- If the RGB interface is being used, the SPI interface should be used for controlling the registers.
### Conclusion
The ILI9325C is a versatile single-chip driver designed for a-Si TFT LCDs, offering high-resolution graphics and rich color depth. Its comprehensive support for various interfaces and compatibility with different panel manufacturers make it a valuable component for developers working on display-related projects. The detailed initialization codes and configuration guidelines provided in the application note ensure seamless integration and optimal performance of the LCD displays.
