Renesas Electronics RA2A2 32-bit Microcontrollers

Renesas Electronics RA2A2 32-bit Microcontrollers (MCUs) are based on the 48MHz Arm^® Cortex^®-M23 core and provide rich peripheral features targeting a wide range of applications. These microcontrollers feature a high-resolution ADC, continuous firmware update facility, segment LCD, and low-power operation for simplifying the system design. The RA2A2 MCUs target energy management and general-purpose applications by supporting 24-bit sigma-delta ADC, dual-bank code flash, independent power supply RTC, and segment LCD. These microcontrollers offer package options supporting 64-pin to 100-pin with LFQFP packages.

These microcontrollers employ multiple power structures and voltage detection hardware to realize energy-efficient ultra-low power operations. The Independent power supply RTC (IRTC) realizes long battery life suitable for applications requiring extended lifetime management in extreme conditions. Typical applications include industrial and building automation, home appliances, medical and healthcare, consumer electronics, and system control for energy management, including next-gen smart electricity meters.

Features

48MHz Arm^® Cortex^®-M23:
- Single-chip 32-bit Arm MCU advances the RA family’s rich analog portfolio segment with rich peripheral features to deliver a better design experience
- Allows high-level analog sensing while reducing power consumption, system cost, and overall footprint
512KB flash memory (in 2 banks), 48KB SRAM (16kB: ECC, 32kB:Parity), and 8KB data flash
Scalable from 64pin to 100pin options with LFQFP
24-bit Sigma Delta A/D, digital filter, and 12-bit SAR A/D
- 24-bit ADC realize low-power and high-resolution AD conversion for power-consumption-sensitive applications

16-bit GPT, 16-bit and 32-bit LPAGT, and Independent RTC (IRTC)
Multiple power structures and voltage detection hardware to realize energy-efficient, and ultra-low power operation
Multiple serial communication interfaces:
- 5ch of SCI, 1ch of SPI, and 2ch of I²C
Segment LCD (8com x 38 Seg)
32-bit multiply accumulator
Safety and security
Dual-bank and bank swap functions make implementing FOTA for continuous operation

Applications

Energy management:
- Electricity meters, flow meters, EV chargers, and data loggers
Industrial Automation:
- Sensors, circuit breakers, digital gauges, safety modules, and actuators
Building automation:
- Smoke detectors, HVACs, thermostats, heat pumps, alarm systems, and lighting

Home appliances:
- Aircon, water heaters, air purifiers, washer/dryers, refrigerators, and weight scales
Medical and healthcare:
- Fitness trackers, high-end portables, BGMs, diagnostics, and imaging
Consumer electrics:
- Remote controllers, PC peripherals, wearables, and IoT edge devices

Renesas Electronics RA2A2 32-bit Microcontrollers

Features

Applications

Block Diagram

Application Circuit Diagram

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