Here are the specifications typically listed in the hx8872c datasheet:
| Parameter | Specification | | :--- | :--- | | Resolution Support | Up to 240 (RGB) x 320 | | Color Depth | 262K colors (18-bit RGB) | | Interface Type | 8-bit, 9-bit, 16-bit, 18-bit parallel (8080/6800) + SPI | | Internal Memory | 172,800 bytes (GRAM) | | Operating Voltage (Logic) | 1.65V to 3.3V (I/O) | | Operating Voltage (Analog) | 2.5V to 3.3V | | On-chip Functions | DC-DC converter, Timing controller, Oscillator, Gamma correction | | Display Modes | Full color, 8-color (idle mode), Sleep mode | | Package | COG (Chip on Glass) / COF (Chip on Flex) |
Beware of fake or incomplete datasheets circulating on random file-sharing sites. The official HX8872C datasheet (version 1.2 or later) can be obtained from:
Always check the revision history at the end of the PDF. A genuine datasheet will list errata and update dates. Revision 1.0 dated 2015 is likely correct; revision 0.2 from 2014 might be a pre-release draft. hx8872c datasheet
The HX8872C contains:
Data flows: TP Rx → TP PHY → Buffer → FX PHY → Fiber Tx, and reverse.
| Pin # | Name | Type | Description | |-------|------------|--------|--------------------------------------| | 1 | TP_TXP | O | TP transmit positive (to magnetics) | | 2 | TP_TXN | O | TP transmit negative | | 3 | VDD33 | P | 3.3V power | | 4 | TP_RXP | I | TP receive positive | | 5 | TP_RXN | I | TP receive negative | | 6 | GND | P | Ground | | 9 | FX_SD | I | Fiber signal detect (active low) | | 10 | FX_RD+ | I | Fiber receive data positive (PECL) | | 11 | FX_RD- | I | Fiber receive data negative (PECL) | | 12 | FX_TD+ | O | Fiber transmit data positive (PECL) | | 13 | FX_TD- | O | Fiber transmit data negative (PECL) | | 21 | MODE_SEL0 | I | Mode select bit 0 (pull-up/down) | | 22 | MODE_SEL1 | I | Mode select bit 1 | | 35 | LED_LINK | O | Link status (active low) | | 36 | LED_ACT | O | Activity blink | | 44 | XTAL_IN | I | 25MHz crystal input | | 45 | XTAL_OUT | O | 25MHz crystal output | Here are the specifications typically listed in the
Note: Full pinout table spans 48 pins; refer to actual datasheet for complete assignments.
Based on typical code derived from the hx8872c datasheet, here is a standard initialization sequence (pseudo-code):
void HX8872C_Init(void) // 1. Hardware reset RESX = 0; delay_ms(10); RESX = 1; delay_ms(120);// 2. Exit sleep write_command(0x11); // SLPOUT delay_ms(120); // 3. Display off during setup write_command(0x28); // DISPOFF // 4. Memory access control (set RGB, row/col order) write_command(0x36); write_data(0x00); // Check datasheet for your panel orientation // 5. Set pixel format (16-bit RGB565) write_command(0x3A); write_data(0x05); // 6. Set Gamma curve (example - use datasheet values) write_command(0xE0); // Positive gamma write_data(0x0F); write_data(0x31); write_data(0x2B); /* ... more ... */ // 7. Inversion and frame rate (register 0xB1, etc.) // 8. Turn on display write_command(0x29); // DISPON write_command(0x13); // NORON
Note: The exact gamma and timing values must be copied from the specific display module’s datasheet, which references the HX8872C.
A common reason for display failure is an incorrect software initialization sequence. The HX8872C datasheet provides a flowchart. Here is the recommended order: Always check the revision history at the end of the PDF
The HX8872C is a source driver IC with integrated gate driver and timing controller, supporting a-si TFT and LTPS TFT technologies. According to the official datasheet, it supports resolutions up to 480 x RGB x 864, making it ideal for 4.0-inch to 7.0-inch displays.
The HX8872C integrates a sophisticated timing controller (TCON) that provides precise control over the display. It supports high-speed MIPI DSI interfaces for efficient data transfer. The device includes source drivers for RGB sub-pixel rendering and gate drivers for scanning the display panel.