Hx8872-c Datasheet (Plus)

is a high-performance TFT-LCD Gate Driver IC manufactured by Himax Technologies, Inc.

. It is commonly used in display systems requiring precise timing and voltage control for liquid crystal panels. Key Technical Specifications HX8872-C Datasheet

highlights its capability to manage high-voltage outputs for gate line driving: Manufacturer Himax Technologies : TFT-LCD Gate Driver IC. Supply Voltage ( cap V cap D cap D : Operates between Output Voltage Range : Supports a wide range from Operating Temperature : Industrial-grade range from negative 20 raised to the composed with power cap C 85 raised to the composed with power cap C Package Type : Typically available in a : Communicates via (Serial Peripheral Interface). Typical Applications TFT-LCD Panels : Driving the gate lines in various display modules. Industrial Displays

: Reliable performance in temperature-sensitive environments. Consumer Electronics : Used in devices requiring high-resolution LCD control. Operational Highlights Power Efficiency

: In standby mode, current consumption is minimized to approximately Thermal Protection

: Features automatic shutdown if internal temperatures exceed 150 raised to the composed with power cap C to prevent circuit damage. High Precision

: Designed for accurate current interruption and consistent performance under electrical stress. AliExpress full PDF download for this part? hx8872-c datasheet

Overview

The HX8872-C is a 20-megapixel image sensor that features a 1/2.55-inch optical format, making it suitable for use in compact camera modules. The sensor is built with a high-performance backside illumination (BSI) technology, which provides excellent low-light sensitivity and color reproduction.

Key Features

  1. Resolution: 20 megapixels (5152 x 3864)
  2. Optical Format: 1/2.55 inches
  3. Pixel Size: 1.2 μm
  4. Sensor Type: Backside Illumination (BSI) CMOS
  5. Output Format: RAW Bayer, 10-bit or 12-bit
  6. Frame Rate: Up to 30 fps at full resolution
  7. Low Light Sensitivity: High sensitivity in low light conditions, with a minimum illumination of 1 lux
  8. Color Reproduction: Wide color gamut and excellent color accuracy
  9. Power Consumption: Low power consumption, approximately 100 mW at 30 fps

Interfaces

The HX8872-C supports several interfaces for easy integration with application processors:

  1. MIPI CSI-2: 4-lane MIPI CSI-2 interface for high-speed data transfer
  2. I2C: 2-wire I2C interface for control and configuration

Operating Conditions

The HX8872-C operates within a wide range of environmental conditions:

  1. Temperature: -20°C to 85°C
  2. Humidity: 5% to 90% RH

Applications

The HX8872-C is suitable for a wide range of applications:

  1. Smartphones: High-quality camera modules for smartphone applications
  2. Tablets: Compact camera modules for tablet computers
  3. Laptops: Integrated camera modules for laptop computers
  4. Security Cameras: Low-power and cost-effective camera modules for security applications

Package

The HX8872-C is available in a compact 3.4 mm x 2.8 mm CSP (Chip Scale Package) with a 0.4 mm pitch.

4.1 Incompatible Voltage Levels

The HX8872-C’s logic inputs are not 5V tolerant. Feeding it 5V from an Arduino Uno (without level shifters) will cause overheating and irreversible damage. Use 3.3V logic or bi-directional level converters. is a high-performance TFT-LCD Gate Driver IC manufactured

6. Register Map and I2C Programming

The HX8872-C is configured via I2C (7-bit address typically 0x88 or 0x8A). Key registers to program:

| Register | Address | Function | Common Setting | | :--- | :--- | :--- | :--- | | PLL_CTRL0 | 0x10 | PLL multiplier setting | 0x2A (for 24 MHz in, 400 MHz out) | | LANE_CTRL | 0x14 | Number of MIPI lanes | 0x01 (1 lane) or 0x03 (2 lanes) | | RGB_CTRL | 0x20 | RGB bit width & polarity | 0x88 (RGB888, rising edge) | | MIPI_DSI_CFG | 0x30 | DSI burst mode, video mode type | 0x07 (Burst mode, sync pulses) | | PWM_DUTY | 0x40 | Backlight duty cycle (8-bit) | 0x80 (50% duty) |

Typical I2C Initialization Sequence (Pseudocode):

I2C_Start();
I2C_Write(0x88); // Slave address + write bit
I2C_Write(0x10); // PLL_CTRL0 register
I2C_Write(0x2A); // Set PLL for 400 Mbps
I2C_Stop();

I2C_Start();
I2C_Write(0x88);
I2C_Write(0x14); // Lane control
I2C_Write(0x03); // Enable 2 lanes
I2C_Stop();


// Soft reset to apply settings
GPIO_Write(RESET_PIN, LOW);
delay_ms(10);
GPIO_Write(RESET_PIN, HIGH);
delay_ms(120); // Wait for PLL lock

2.1 Power Supply Pins

| Pin Name | Type | Description | | :--- | :--- | :--- | | VDDIO | Power | I/O power supply (1.8V – 3.3V). | | VDDC | Power | Core logic power (1.2V). Can be derived from internal LDO. | | VDD_PLL | Power | PLL analog power (1.2V, clean supply required). | | VDD_MIPI | Power | MIPI PHY power (1.2V). | | VGH/VGL | Power (optional) | Gate driver supplies if IC includes timing controller (TCON) functions. | | GND | Ground | Digital and analog ground plane. |

5. Power-on Sequence (critical for reliability)

  1. VDDI → VCI → VIO (rise within 10ms)
  2. Wait 1ms → Hardware reset (active low ≥10µs)
  3. Delay 120ms → Init register writes
  4. Sleep out (0x11) → Wait 5ms
  5. Display on (0x29)

⚠️ Don’t apply backlight before panel initialization – risk of latch-up.