GD32VF103RBU6 — GigaDevice RISC-V RV32IMAC MCU, 108MHz, 128KB flash, 32KB SRAM, QFN64 Category: MCU Pricing LCSC $2.09 Mouser $2.70 DigiKey $2.75 Farnell $3.05 Manufacturer: https://www.gigadevice.com