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Ultra-Low Power MCUs for Cost-Sensitive Applications

RA0 MCU Series from Renesas

Powered by the Arm Cortex-M23, the Renesas RA0 microcontroller (MCU) Series features the industry’s lowest overall power consumption for 32-bit MCUs. These cost-effective devices target consumer electronics, small appliances, and industrial system control. With a current consumption of 84.3μA/MHz in active mode and 0.82 mA in sleep mode, coupled with a Software Standby mode, they offer ideal solutions for battery-operated applications.


RA0E1 Group: Designed for Cost-Sensitive Applications

The RA0E1 Group, the first release in the series, optimizes features for cost-sensitive applications. Offering a wide operating voltage range of 1.6V to 5.5V and integrated functionalities like timers, serial communications, and analog functions, they reduce BOM costs. Renesas ensures precision with a ±1.0% high-precision on-chip oscillator (HOCO) over a wide temperature range, eliminating the need for trimming the post-reflow process.


Empowering Development with Renesas’ Flexible Software Package

Supported by Renesas’ Flexible Software Package (FSP), the RA0E1 Group accelerates application development, enabling seamless integration of legacy code and choice of RTOS. Combined with compatible devices from Renesas' portfolio in Winning Combinations, they provide optimized, low-risk designs for faster time to market, reaffirming Renesas' leadership in MCU technology.


Key Features of the RA0E1 Group MCUs

  • Core: 32MHz Arm Cortex-M23

  • Memory: Up to 64KB integrated Code Flash memory and 12KB SRAM

  • Analog Peripherals: 12-bit ADC, temperature sensor, internal reference voltage

  • Communications Peripherals: 3 UARTs, 1 Async UART, 3 Simplified SPIs, 1 IIC, 3 Simplified IICs

  • Safety: SRAM parity check, invalid memory access detection, frequency detection, A/D test, immutable storage, CRC calculator, register write protection

  • Security: Unique ID, TRNG, Flash read protection

  • Packages: 16-, 24- and 32-lead QFNs, 20-pin LSSOP, 32-pin LQFP


With the RA0 Series, Renesas continues to lead the way in embedded processing, offering ultra-low power, cost-effectiveness, and ease of design. RA0 Series solutions are now available at Braemac. Contact for more information.



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