The ESK32-20001A is an enhanced version of ESK32-20001, the difference is that ESK32-20001A supports Quad Mode SPI Flash and Monochrome LCD connector.
The ESK32-20001A Expansion Board is designed to work alongside the ESK32-30xxx series starter kit. The accompanying peripheral components on the board include a Buzzer, Key Inputs, Touch Keys, RS232 Socket, SD Card Socket, EEPROM, Serial Flash Memory, LEDs ,and Potentiometer, etc. This wide range of peripheral components will allow users to quickly understand and evaluate the HT32 series functions and features.
There are only three components which are different between the ESK32-21001A and the ESK32-20001A. These are the CMOS sensor connector, smart card connector and audio in/out which are only available in the ESK32-21001A.