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3 inch e-Paper Module (G)
3inch 4-Color E-Paper Display Module
A 400 168 four-color e-paper module supporting red, yellow, black, and white display output, with SPI interface, wide viewing angle, and ultra-low power paper-like display.
Key Features
- 3 inch e-paper panel with 400 168 resolution.
- Four-color display: red, yellow, black, and white.
- No backlight required; content remains visible after power is removed.
- Ultra-low power consumption, mainly required during refresh.
- SPI interface for Raspberry Pi, Jetson Nano, Arduino, STM32, and other controller boards.
- Onboard voltage translator for 3.3V and 5V MCU compatibility.
Specifications
| Operating voltage | 3.3V / 5V |
|---|---|
| Display color | Red / Yellow / Black / White |
| Interface | 3-wire SPI / 4-wire SPI |
| Grey scale | 2 |
| Resolution | 400 168 pixels |
| Display size | 70.4 29.568mm |
| Outline dimensions | 88.5 41mm |
| Full refresh time | 12s |
| Refresh power | <60mW typ. |
| Dot pitch | 0.176 0.176mm |
| Standby current | <0.01uA |
Why E-Paper
E-paper reflects ambient light like printed paper, stays readable under lamplight or natural light, and keeps the last displayed content after power is removed.
SPI Interface
The module uses SPI and can connect to common controller boards such as Raspberry Pi, STM32, and Arduino.
| VCC | 3.3V / 5V input |
|---|---|
| GND | Ground |
| DIN | SPI MOSI |
| CLK | SPI SCK |
| CS | SPI chip select, active low |
| DC | Data / command selection |
| RST | External reset, active low |
| BUSY | Busy status output |
Application Examples
Suitable for price tags, shelf labels, asset or equipment tags, conference name tags, industrial instruments, and low-power information displays.
Outline Dimensions
3 inch e-Paper Module (G)
3inch 4-Color E-Paper Display Module
A 400 168 four-color e-paper module supporting red, yellow, black, and white display output, with SPI interface, wide viewing angle, and ultra-low power paper-like display.
Key Features
- 3 inch e-paper panel with 400 168 resolution.
- Four-color display: red, yellow, black, and white.
- No backlight required; content remains visible after power is removed.
- Ultra-low power consumption, mainly required during refresh.
- SPI interface for Raspberry Pi, Jetson Nano, Arduino, STM32, and other controller boards.
- Onboard voltage translator for 3.3V and 5V MCU compatibility.
Specifications
| Operating voltage | 3.3V / 5V |
|---|---|
| Display color | Red / Yellow / Black / White |
| Interface | 3-wire SPI / 4-wire SPI |
| Grey scale | 2 |
| Resolution | 400 168 pixels |
| Display size | 70.4 29.568mm |
| Outline dimensions | 88.5 41mm |
| Full refresh time | 12s |
| Refresh power | <60mW typ. |
| Dot pitch | 0.176 0.176mm |
| Standby current | <0.01uA |
Why E-Paper
E-paper reflects ambient light like printed paper, stays readable under lamplight or natural light, and keeps the last displayed content after power is removed.
SPI Interface
The module uses SPI and can connect to common controller boards such as Raspberry Pi, STM32, and Arduino.
| VCC | 3.3V / 5V input |
|---|---|
| GND | Ground |
| DIN | SPI MOSI |
| CLK | SPI SCK |
| CS | SPI chip select, active low |
| DC | Data / command selection |
| RST | External reset, active low |
| BUSY | Busy status output |
Application Examples
Suitable for price tags, shelf labels, asset or equipment tags, conference name tags, industrial instruments, and low-power information displays.
Outline Dimensions
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