CH32F208WBU6-I — WCH
ARM Cortex-M3 BLE MCU, 144MHz, 128KB flash, QFN68, industrial range -40..+85C

Category: MCU

Pricing
  LCSC         $1.59
  Mouser       $1.90
  DigiKey      $2.14
  Farnell      $2.17

Manufacturer: https://www.wch.cn