2.13inch e-Paper HAT

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Revision as of 18:14, 5 June 2020 by INKU-admin123 (talk | contribs) (SPI timing)
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This is 2.13inch e-Paper module, 250x122 resolution, SPI interface, supports black and white colors.


  • Size: 2.13 inch
  • Dimension(Raw panel):59.2mm × 29.2mm × 1.05mm
  • Dimension(PCBA):65mmx30.2mm
  • Display area:48.55mm × 23.71mm
  • Operating voltage:3.3V/5V
  • Interface:SPI
  • Pitch:0.194* 0.194
  • Resolution:250*122
  • Display colors:Black, White
  • Gray scale:2
  • Partial update :0.3s
  • Fully update :2s
  • Consumption (refresh) : 26.4mW(typ.)
  • Consumption (standby) :<=0.017mW

【Notices】: Update time: The data provided is for reference, the actual time may be different according to the MCU. The e-Paper will flicker when updating, it is normal
Consumption: The data provided is for reference, the actual consumption may be different according to the driver board.

SPI timing


The e-Paper could only support writing, therefore the MISO pin is hidden.

  • 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.

Timing:CPHL=0, CPOL=0 (SPI0)
【Note】For more information of the SPI, please search online.




  • 一个点在图形上一般称之为像素点(pixel),而颜色不是1就是0,也就是1个位就可以标识颜色:1Pixel = 1bit,那么一个字节里面就包含了8个像素点。
  • 以16个像素点为例,我们假设前8个像素点为黑,后8个像素点为白色,那么可以这么认为,像素点1-16,对应这0位到15位,0表示黑色,1表示白色:

E-paper hardware work 1.png
E-paper hardware work 2.png








1、Working requirements of e-Paper?|

  • 【Working】Temperature: 0~50°C; Humidity: 35%~65%RH
  • 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 6 months
  • 【Transport】Temperature: -25~70°C; Max transport time: 10 days
  • 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h

2、 What do you need to note about e-Paper refreshing

  • Refresh mode
    • Full refresh: e-Paper flicker when full refreshing to remove ghost image for best display.
    • Partial refresh: It doesn't flicker if you use partial refresh (only some of the two-color e-paper support partial refresh). Note that you cannot use Partial refresh all the time, you should full refresh e-paper regularly, otherwise, ghost problem will get worse even damage
  • Refresh rate
    • When using, you should set the update interval at least 180s. (except Partial supportable types)
    • Please set the e-Paper to sleep mode or power off it directly, otherwise, the e-Paper is damaged because of working in high voltage for a long time.
    • You need to update the content of three-color e-Paper at least one time every 24h to avoid the burn-in problem.
  • Working place
    • We recommend you to use the e-Paper indoor. If you need to set the e-paper outdoor, Please place the e-paper in shadow and protect it from UV. When you designed you e-paper product, you should take care about the working situation like temperature, humidity, etc.

3、Why the e-Paper display a black frame?

  • You can configure Border Waveform Control register or VCOM AND DATA INTERVAL SETTING register to change the frame.

4、Could the e-Paper work again after sleeping?

  • You can use the initial function to wake it up and then update.