GD32F103C8U6 — GigaDevice ARM Cortex-M3 MCU, 72MHz, 64KB flash, 20KB SRAM, QFN48 Category: MCU Pricing LCSC $1.13 Mouser $1.34 DigiKey $1.49 Farnell $1.49 Manufacturer: https://www.gigadevice.com