Risc-V MCUs have 8 to 20 pins

Chinese chip maker WCH has announced a range of few-pin microcontrollers with cores that execute the RISC-V RV32EC instruction set. Called the CH32V003 series, they are based on the company’s own QingKe RISC-V2A core with a hardware interrupt stack and two-level interrupt nesting, supported by 16kbyte flash, 2kbyte ram and a ~2kbyte bootloader. There is ...

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