Low cost Cortex-M23 microcontroller extends temperature range
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Renesas Electronics has launched a low cost family of microcontrollers based on the ARM Cortex-M23 core with low power consumption and an extended temperature range.
The RA0E2 range of 32MHz devices has up to 128KB integrated Code Flash memory and 16KB SRAM and is a drop in replacement for the RA0E1 family.
The power consumption is 2.8mA current in active mode and 0.89 mA in sleep mode. An integrated High-speed On-Chip Oscillator (HOCO) enables a fast wake-up time so that the controller can stay in Software Standby mode more of the time with power of 0.25 µA.
The high-precision (±1.0%) HOCO also 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. This wide temperature range enables customers to avoid costly and time-consuming “trimming,” even after the reflow process.
The RA0E1 devices have already been adopted in consumer electronics, appliance and white goods, power tools, industrial monitoring and other applications. The RA0E2 MCUs are fully compatible, with pin-expansion while maintaining the same peripherals and low power consumption. This compatibility lets customers re-use existing software assets.
The RA0E2 devices have a feature set optimized for cost-sensitive applications with a wide operating voltage range of 1.6V to 5.5V so that designers don’t need a level shifter/regulator in 5V systems. The RA0 MCUs also integrate timers, serial communications, analog functions, safety functions and security functionality to reduce customer BOM cost. A wide range of packaging options is also available, including a 5mm x 5mm 32-lead QFN.
“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 have been so popular with our customers. The addition of extended temperature range and more memory opens up even more applications and use cases. We plan to further expand the RA0 product lineup, delivering optimal solutions for 8-16 bit MCU users transitioning to 32-bit MCUs.”
The RA0E2 Group MCUs are supported by Renesas’ Flexible Software Package (FSP) with multiple RTOS, BSP, peripheral drivers, middleware, connectivity, networking, and security stacks as well as reference software to build complex AI, motor control and cloud solutions.
This allows developers to integrate legacy code and choice of RTOS to ease ease migration of RA0E1 designs to larger RA0E2 devices.
The RA0E2 Group MCUs are available now, along with the FSP software and the RA0E2 Fast Prototyping Board. Samples and kits can be ordered either on the Renesas website or through distributors.
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