GD32F350VBU6 — GigaDevice ARM Cortex-M4 MCU, 108MHz, 128KB flash, 16KB SRAM, QFN100 Category: MCU Pricing LCSC $1.90 Mouser $2.50 DigiKey $2.57 Farnell $2.83 Manufacturer: https://www.gigadevice.com