GD32F103RBT6-I — GigaDevice
ARM Cortex-M3 MCU, 72MHz, 128KB flash, 20KB SRAM, LQFP64, industrial range -40..+85C

Category: MCU

Pricing
  LCSC         $1.75
  Mouser       $2.16
  DigiKey      $2.16
  Farnell      $2.40

Manufacturer: https://www.gigadevice.com