Hx8872c Datasheet -

| Parameter | Min | Typ | Max | Unit | |--------------------|------|-----|------|------| | Supply Voltage | 3.0 | 3.3 | 3.6 | V | | Core Current | - | 180 | 250 | mA | | IO Current | - | 60 | 100 | mA | | TP Output Swing | 1.9 | 2.0 | 2.1 | Vpp | | FX PECL Output | 600 | 800 | 1000 | mV | | FX Input Sensitivity | 100 | - | - | mVpp | | Operating Temp | 0 | - | 70 | °C |

While the exact pinout varies by package, the hx8872c datasheet consistently groups pins into the following categories:

1. MCU Interface Pins

2. Display Driver Pins (TFT Panel)

3. Power Supply Pins

4. Oscillator & Reset

The datasheet includes a note: "When switching from RGB mode to SPI mode, a 1ms delay must be inserted after reset." Overlooking such notes is a common root cause of "black screen" issues.

Register 0x36 (MADCTL) is often misunderstood. Bit 6 (MX) and bit 7 (MY) control mirroring. Setting MX=1, MY=0 will flip the display horizontally – useful for different mounting orientations.

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. hx8872c datasheet

Do not operate the device above these maximum ratings to avoid permanent damage.

The HX8872C is a highly integrated, low-power, single-chip CMOS device designed for Ethernet media conversion between 10/100Base-TX twisted pair and 100Base-FX fiber optic interfaces. It supports automatic link restoration, store-and-forward switching, and complies with IEEE 802.3/802.3u standards. The IC operates in standalone mode (no external microcontroller needed) and includes onboard digital isolation, PLL clock recovery, and LED drive outputs.

void init_HX8872C() 
  digitalWrite(RESET_PIN, LOW);
  delayMicroseconds(20);
  digitalWrite(RESET_PIN, HIGH);
  delay(120);
writeCommand(0x11); // Sleep out
delay(120);
writeCommand(0x3A);
writeData(0x77); // 24-bit color | Parameter | Min | Typ | Max
writeCommand(0x36);
writeData(0x48); // Normal RGB scan direction
writeCommand(0x29); // Display ON