Renesas' RA2E1 group is the RA family's entry line single-chip microcontroller based on the 48 MHz Arm^® Cortex^®-M23 core and up to 128 kB code flash and 16 kB SRAM memory. The optimized processing and Renesas' low-power process technology make it one of the industry's most energy-efficient ultra low-power microcontrollers. The RA2E1 group supports a wide operating voltage range of 1.6 V to 5.5 V and a large selection of packages such as LQFP, QFN, LGA, BGA, and WLCSP. The RA2E1 provides pin and peripheral compatibility with the RA2L1 group. It is ideal for battery-operated applications and other systems requiring high performance and low energy consumption in space-constrained applications.