• sales

    +86-0755-88291180

2.13inch e-Paper (D)

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.

212x104, 2.13inch E-Ink display HAT for Raspberry Pi, three-color, SPI interface


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: MPS2280 POE Raspberry Pi 5 PCIe to M.2 NVMe SSD Adapter Board HAT Pi5 2280/2242/2230 1.28inch Round LCD Raspberry Pi Pico 2 Tiny RP2350B RP2350-Linux Mini Development Board with PSRAM-8MB Or Without PSRAM RV1103 SIM7600G H Mini PCIe SIMCom Original 4G LTE Cat-4 Module Global Coverage GNSS LuckFox Pico User Guide Raspberry Pi 5 PCIe to 4-CH PCIe FFC HAT Board Pi5 4 Channels BPI-M4 Zero Integrated capacitive fingerprint module Cortex core UART serial port High-precision fingerprint recognition ESP32 2 inch Capacitive TouchScreen LCD Display ST7789 CST816D 240x320 For Arduino/Raspberry Pi/Pico Milk-V Duo S Usage of USB Type A interface Bevelopment Board Raspberry-Pi-A7670E-GSM-GPRS-GNSS-LTE-Cat-1-2G-A-User-Guide Raspberry Pi MLX90640 Zero LCD HAT (A) user guide Luckfox Pico PLUS Raspberry Pi Pico 2 RP2350 ETH CH9120 TCP/UDP Ethernet Network For Arduino Spotpear SpotPear Raspberry Pi Pico 2 RP2350 0.85 inch LCD Display mini Development Board 0.85inch Screen RGB LED/SD Slot /QMI8658 Gyroscope Sensor