Renesas is using Arm’s Cortex-M23 core in a microcontrollers intended for IoT end-points. Called the RA2E2 Group and part of the RA Family, they are nine small MCUs that consume little: being available in the 1.87 x 1.84mm 16pin WLCSP (wafer-level chip-scale package) and operating at 81μA/MHz, dropping to 200nA in software stand-by with fast wake. Operation ...

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