GD32F103VEU6 — GigaDevice ARM Cortex-M3 MCU, 72MHz, 512KB flash, 64KB SRAM, QFN100 Category: MCU Pricing LCSC $2.56 Mouser $3.40 DigiKey $3.22 Farnell $3.80 Manufacturer: https://www.gigadevice.com