CH552 CH554 USB MCU Mini DEV Board [CH55x Series]

CH552 CH554 USB MCU Mini DEV Board [CH55x Series]





  • USB Stick board size
  • Same footprint and compatible pins for CH552 or CH554, SSOP20 package.
  • On board power led
  • On board GPIO testing led P1.4
  • On board power regulator 3.3V, jumper select 3.3V or 5V power chip.
  • No need extra programmer, not even USB-TTL tool!
  • To enter into programming mode, use a tweezer, short connect the two pins in the middle of the board, where marked as “DL”
  • All lead out pins.

Price for one board only.

All documentation please find at CH55X wiki page, or customer github.

WCH CH55x Series:

Additional information

Weight N/A

CH552, CH554



1 review for CH552 CH554 USB MCU Mini DEV Board [CH55x Series]

  1. 5 out of 5

    Ralph Doncaster (verified owner)

    I tested the CH551 and the CH552. Both are great little boards.
    I think the CH552/554 board could do without the 3V3 regulator, since the chips have a builtin 3v3 LDO.

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