CH554T-I — WCH
Enhanced E8051 MCU, USB, 16KB flash, TSSOP20, industrial range -40..+85C

Category: MCU

Pricing
  LCSC         $0.52
  Mouser       $0.67
  DigiKey      $0.71
  Farnell      $0.78

Manufacturer: https://www.wch.cn