Ingcool 2.13inch E-Ink Display HAT Rev2.1 BlackWhite Two-Color 250x122 Pixel E-Paper Screen LCD for Raspberry Raspberry Pi 4B 3B plus 3B Zero Zero WJetson NanoSPI Interface Support Partial Refresh

Introduction This is 2.13inch e-Paper module, 250x122 resolution, SPI interface, supports black and white colors. Features 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 only supports 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?You can search more documents of SPI bus online. Working protocol Pixel & Byte We define the pixels in a monochrome picture, 0 is black and 1 is white. White?Bit 1 Black?Bit 0 The dot in the figure is called a pixel. As we know, 1 and 0 are used to define the color, therefore we can use one bit to define the color of one pixel, and 1 byte = 8pixels