Model No. WAA0420A2ADB5NXXX000
►Size: 4.2 inch E-paper display module
►Resolution: 400x300 dots
►Interface: MCU / SPI
►Touch Screen : With capacitive touch panel
►The display refreshes black-and-white e-paper displays.
►Front Light : Yes
The WAA0420A2ADB5NXXX000 is a 4.2-inch Electronic Paper Display (EPD) module featuring a front light panel and capacitive touch functionality. This display supports 1-bit black-and-white image rendering with a resolution of 400×300 pixels. It is built on a TFT backplane that drives the electrophoretic layer, and integrates a variety of functional circuits including gate driver, source driver, MCU interface, timing controller, oscillator, DC-DC converter, SRAM, LUT, and VCOM generator.
This module is designed for ultra-low power consumption and high-visibility environments, making it ideal for a range of paperless applications in both commercial and industrial settings.
The 4.2-inch Electronic Paper Display is not only suitable for Electronic Shelf Label (ESL) systems, but also well-suited for a broad range of low-power, high-clarity display solutions including:
| Parameter | Specifications | Unit |
|---|---|---|
| Screen Size | 4.2 | Inch |
| Display Resolution | 400(H)×300(V) | Pixel |
| Active Area | 84.8(H)×63.6(V) | mm |
| Pixel Pitch | 0.212×0.212 | mm |
| Pixel Configuration | Rectangle | |
| Outline Dimension | 91(H) × 77 (V) × 2.02(D) | mm |
| Module Weight | 16.1±0.3 | g |
| Parameter | Symbol | Rating | Unit |
|---|---|---|---|
| Logic supply voltage | VCI | -0.5 to +6.0 | V |
| Logic Input voltage | VIN | -0.5 to VCI +0.5 | V |
| Logic Output voltage | VOUT | -0.5 to VCI +0.5 | V |
| Operating Temp range | TOPR | 0 to +50 | ºC |
| Storage Temp range | TSTG | -25 to+70 | ºC |
| Optimal Storage Temp | TSTGo | 23±2 | ºC |
| Optimal Storage Humidity | HSTGo | 55±10 | %RH |
| No. | Name | I/O | Description |
|---|---|---|---|
| 1 | NC | Do not connect with other NC pins | |
| 2 | GDR | O | N-Channel MOSFET Gate Drive Control |
| 3 | RESE | I | Current sense input for control loop. |
| 4 | NC | NC | Do not connect with other NC pins |
| 5 | VSH2 | C | Positive source driving voltage (Red) |
| 6 | TSCL | O | I2C interface to digital temperature sensor Clock pin |
| 7 | TSDA | I/O | I2C interface to digital temperature sensor Data pin |
| 8 | BS1 | I | Bus Inteface selection pin |
| 9 | BUSY | O | Busy state output pin |
| 10 | RES# | I | Reset signal input. Active Low |
| 11 | D/C# | I | Data / Command control pin |
| 12 | CS# | I | Chip select input pin |
| 13 | SCL | I | Serial Clock pin (SPI) |
| 14 | SDA | I/O | Serial Data pin (SPI) |
| 15 | VDDIO | P | Power Suupply for interface logic pins. It should be connected with VCI |
| 16 | VCI | P | Power Supply for the chip |
| 17 | VSS | P | Ground |
| 18 | VDD | C | Core logic power pin VDD can be regulated internally from VCI. A capacitor should be connected between VDD and VSS |
| 19 | VPP | P | FOR TEST |
| 20 | VSH1 | C | Positive Source driving voltage |
| 21 | VGH | C | Power Supply pin for Positive Gate driving voltage and VSH1 |
| 22 | VSL | C | Negative Source driving voltage |
| 23 | VGL | C | Power Supply pin for Negative Gate driving voltage VCOM and VSL |
| 24 | VCOM | C | VCOM driving voltage |
Note: I: Input, O: Output, P: Power, D: Dummy, S: Shorted line, M: Mark, PI: Power input, PO: Power output, I/O: Input / Output, PS: Power Setting, C: Capacitor pin.
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