Computer Science Division of the EECS Department at the University of California, Berkeley. Recently RISC-V and GigaDevice announced the GD32V Series, which is said to be the world’s first 32-bit general-purpose microcontroller based on the RISC-V core. Today we released Longan Nano development board powered by GD32VF103CBT6 MCU today and it only costs $4.90.