Renesas debuts low-power MCUs within the RA0 series
Renesas Electronics Corporation has introduced a new group of low-power, cost-effective MCUs within the popular RA0 Series, designated RA0E2.
Based on the Arm® Cortex®-M23 processor, RA0E2 MCUs and offer extremely low power consumption, extended temperature range, and various peripheral functions and safety features. Target applications include consumer electronics, small appliances, industrial system control and building automation.
RA0E2 MCUs are fully compatible with earlier RA0E1 devices, offering pin expansion while maintaining the same peripherals and ultra-low power. This compatibility allows customers to reuse existing software assets. The new devices provide industry-leading power consumption of only 2.8 mA in active mode and 0.89 mA in sleep mode.
Optimised for cost-sensitive applications, the RA0E2 MCUs offer a wide operating voltage range of 1.6 V to 5.5 V, so a level shifter/regulator in 5 V systems is not required. The MCUs also integrate timers, serial communications, analogue functions, and safety and security functionality to reduce customer BOM costs. Packaging options are also available, including a tiny 5- x 5-mm 32-lead QFN.
Further, an integrated high-speed on-chip oscillator (HOCO) enables the fastest wake-up time in this microcontroller class. The quick wake-up allows the MCUs to remain in Software Standby mode more frequently, where power consumption drops to a minuscule 0.25 µA. The high-precision (±1.0%) HOCO improves baud rate accuracy and enables designers to forego a standalone oscillator. Unlike other HOCOs in the industry, it maintains this precision in environments from -40°C to 125°C, avoiding costly and time-consuming “trimming,” even after the reflow process.
“The market reception for our RA0 Series has exceeded even our own high expectations,” said Daryl Khoo, Vice President of the Embedded Processing Marketing Division at Renesas. “The RA0E2 Group MCUs deliver the same ultra-low power and price point that has been so popular with our customers. Adding an extended temperature range and more memory opens up even more applications and use cases. We plan to expand the RA0 product lineup further, delivering optimal solutions for 8-16-bit MCU users transitioning to 32-bit MCUs.”
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