Hx8872c Datasheet |best| File
Overview
The HX8872C is engineered to drive LCD (Liquid Crystal Display) panels efficiently, offering a range of features that enhance display performance, including high brightness, wide viewing angles, and low power consumption. It's a compact, highly integrated solution that simplifies LCD display design and implementation.
1. Executive Summary
The HX8872C is a highly integrated TFT LCD Timing Controller designed primarily for use in notebook PC and monitor panels. It is part of Himax's "Smart T-CON" series. Unlike basic timing controllers that simply format signals, the HX8872C features a built-in scaling engine, allowing it to accept input resolutions different from the panel's native resolution and scale them appropriately. It also includes advanced image quality enhancement functions. hx8872c datasheet
Key Features of the HX8872C (From Datasheet)
Here are the specifications typically listed in the hx8872c datasheet: Overview The HX8872C is engineered to drive LCD
| 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) | Smartphones and feature phones (especially older or low-cost
Common Applications
- Smartphones and feature phones (especially older or low-cost models)
- Portable media players (PMPs)
- Digital still cameras (DSC)
- Handheld gaming devices
- Industrial control panels with small TFT screens
- Smart home display interfaces
Typical Application Circuit and Design Notes
- Use short traces and place decoupling capacitors (0.1 μF ceramic + 10 μF electrolytic) close to VCC and GND pins to maintain stability and handle transient currents when driving speakers.
- For BTL output, no output capacitors are required between amplifier outputs and speaker; connect speaker directly between OUT+ and OUT−. For single-ended outputs, use coupling capacitors per datasheet.
- Add a small resistor (0.1–1 Ω) and/or ferrite bead in series with each output if oscillation or EMI issues occur.
- Use the BYPASS/MUTE capacitor recommended to minimize pop-on/pop-off; typical values 0.01–0.1 μF.
- If using shutdown, ensure SHDN pin is driven cleanly to avoid unintended audible transients.
- Thermal considerations: ensure PCB copper area under the IC provides heat dissipation; consider airflow or heatsinking for continuous high-power use.
- Avoid driving into loads below the recommended minimum impedance; lower impedances raise dissipation and may trigger thermal or current limiting.
5. Application Use Cases
- Notebook Displays: The primary application. Its compact form factor and scaling capabilities make it ideal for laptop panels where space is limited, and the resolution of the input signal may vary depending on the application or power saving mode.
- Desktop Monitors: Used in entry-level to mid-range monitors where a discrete scaler board is not used, allowing the T-CON to handle the scaling directly on the panel board.
