Wearable Devices with RE01 32-Bit MCU Solution Renesas Electronics Wearable Devices with the RE01 32-Bit MCU Solution reduce current and extend battery life. Wearable devices are becoming more sophisticated and require more power for digital signal processing. Renesas Electronics Wearable Devices with the RE01 32-Bit MCU Solution enable ultra-low current consumption in both active and standby mode and high-speed operation at low voltages.