CH32V307RCT6R — WCH RISC-V RV32IMAC MCU, 144MHz, 256KB flash, 64KB SRAM, LQFP64, tape & reel, 2500 pcs Category: MCU Pricing LCSC $1.48 Mouser $1.89 DigiKey $1.90 Farnell $2.17 Manufacturer: https://www.wch.cn