• sales

    +86-0755-88291180

2.13inch e-Paper

Introduction


Note:
 The raw panel require a driver board, If you are the first time use this e-Paper, we recommend you to buy the HAT version or buy more one driver hat for easy use, otherwise you need to make the driver board yourself. And this instruction is based on the version with PCB or driver board. 250x122, 2.13inch E-Ink display HAT for Raspberry Pi, SPI interface


Versions


The 2.13inch e-Paper have updated to v2 version. The controller of 2.13inch e-Paper v2 is different with the old version. Demo code is updated, and it is not compatible with the old version.

Please check which version of e-paper do you get before you download demo codes. The e-Paper which has v2 sticker is new version.

 


Interfaces



VCC3.3V
GNDGND
DINSPI MOSI
CLKSPI SCK
CSSPI chip select (Low active)
DCData/Command control pin (High for data, and low for command)
RSTExternal reset pin (Low for reset)
BUSYBusy state output pin (Low for busy)


Working principle


Introduction


This product is an E-paper device adopting the image display technology of Microencapsulated Electrophoretic Display, MED. The initial approach is to create tiny spheres, in which the charged color pigments are suspending in the transparent oil and would move depending on the electronic charge. The E-paper screen display patterns by reflecting the ambient light, so it has no background light requirement. Under sunshine, the E-paper screen still has high visibility with a wide viewing angle of 180 degree. It is the ideal choice for E-reading.


Communication protocol




Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has display requirement.

  • CS is slave chip select, when CS is low, the chip is enabled.
  • DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
  • SCLK is the SPI communication clock.
  • SDIN is the data line from the master to the slave in SPI communication.

SPI communication has data transfer timing, which is combined by CPHA and CPOL.

  1. CPOL determines the level of the serial synchronous clock at idle state. When CPOL = 0, the level is Low. However, CPOL has little effect to the transmission.
  2. CPHA determines whether data is collected at the first clock edge or at the second clock edge of serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.
  • There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.

As you can see from the figure above, data transmission starts at the first falling edge of SCLK, and 8 bits of data are transferred in one clock cycle. In here, SPI0 is in used, and data is transferred by bits, MSB first.

TAG: 1.3inch LCD RP2040-PiZero Game ST7789 Raspberry Pi Pico LCD Display Screen ESP32-S3 Smart 86 Box Development Board with 4 inch 480x480 Display Touch Screen For AI and DeepSeek Raspberry Pi IR Thermal Imaging Camera Jetson Orin Nano UGV Beast PT ROS2 AI OpenCV Robot Car MediaPipe ESP32-S3 Round LCD Raspberry Pi MLX90641 Raspberry Pi HQ Camera Official Original High Quality For M12 Lenses 12.3MP IMX477 Sensor Raspberry Pi Pico 2 RP2350B RP2350-PiZero Development Board PSRAM DVI For HDMI Raspberry Pi 5 POE + PCIe to M.2 NVMe SSD Board HAT+ Pi5 2242/2230 Power over Ethernet UGV Beast PT Kit AI OpenCV Robot Car MediaPipe For Jetson Orin Arduino 1.54inch OLED ESP32-S3 Development Board 3.16 inch LCD display 3.16inch Screen SD slot 320x820 RGB LED ST7701 RS232/485/422 To CAN ESP32 S3 R8 MP3 Board 2.8inch LCD TouchScreen Display Speaker/SD-Card/Battery/QMI8658-6-Axis-Sensor Raspberry Pi 5 Active Cooler TVOC Sensor gas Sensor Expansion board UART High Sensitivity For Arduino /Raspberry Pi /Pico /ESP32 ESP32 S3 LCD Camera Development Board 2 inch Display QMI8658 Sensor / Battery Port LVGL/HMI For Arduino Milk V here User Guide Sipeed MaixCAM SG2002 RISC-V AI Camera Kit with Screen Audio WIFI6 Linux Board