https://www.cnx-software.com/2022/02/18/hc32l110-world-smallest-arm-mcu/

HC32L110 Arm Cortex-M0 MCU is available in a tiny 1.59 x 1.436 mm CSP16 package - CNX Software
HC32L110 could the world's smallest Arm MCU with the 32MHz microcontroller available in a 1.59 x 1.436 mm CSP16 package
www.cnx-software.com
요새는 이 크기로 RISC-V MCU도 많이 나오고 있다.
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