The part number **JH28240320CFCNUWNTHCWC** refers to a high-resolution, small-form-factor **TFT LCD Display Module**. These modules are commonly used in industrial handhelds, medical devices, or smart home appliances. Below is a breakdown of the electronic specifications and features associated with this specific component type. --- ### 1. General Specifications Based on the standard nomenclature for this series, here are the primary physical and electronic attributes: | Feature | Specification | | :--- | :--- | | **Display Type** | TFT LCD (Thin Film Transistor) | | **Resolution** | 240 x 320 Pixels (QVGA) | | **Screen Size** | Typically 2.8 inches (diagonal) | | **Backlight** | White LED (UW - Ultra White) | | **Interface** | MCU/SPI or RGB Interface | | **Touch Panel** | Capacitive Touch (indicated by "C") | --- ### 2. Detailed Part Number Breakdown While manufacturer codes vary slightly, the string follows this logical structure: * **JH:** Manufacturer Prefix (often JianHao or similar display foundries). * **28:** Size indicator (2.8-inch diagonal). * **240320:** Resolution (240 pixels wide by 320 pixels high). * **CFC:** Color filter/Glass type (Color Filter, Thin Film). * **UW:** High-brightness backlight configuration (Ultra-White LEDs). * **NTH:** No internal Temperature sensor / Standard Temperature range. * **CWC:** Capacitive Touch Screen with a specific Controller/Cover Lens. --- ### 3. Electronic Interface & Pinout These modules generally use a 40-pin or 50-pin FPC (Flexible Printed Circuit) connector. Key signal groups include: * **Power (VDD/VCI):** Usually 2.8V to 3.3V for logic. * **Backlight (LEDA/LEDK):** Requires a constant current driver (typically 15-25mA). * **Data Bus:** 8/16-bit parallel bus or 3/4-wire SPI for sending image data. * **Control Lines:** Reset (RST), Chip Select (CS), Register Select (RS), and Write/Read (WR/RD) enables. * **I2C Interface:** Dedicated pins (SCL/SDA) for the Capacitive Touch Controller. --- ### 4. Hardware Integration Requirements To use this part in a design, the following electronic considerations are necessary: 1. **Level Shifting:** If using a 5V microcontroller (like an Arduino Uno), you must use level shifters to drop signals to 3.3V to avoid damaging the LCD driver IC. 2. **Backlight Driver:** The backlight usually consists of 4-6 LEDs in parallel or series. Direct connection to VCC will burn them out; a dedicated LED driver IC (like the PT4115 or a simple transistor/resistor circuit) is required. 3. **Frame Buffer:** At 240x320 resolution with 16-bit color, one frame requires ~153KB of RAM. Ensure your microcontroller has enough memory or an external display controller. ---