Renesas R7FA2E2A32DNJ#BA1

Overview

R7FA2E2A32DNJ#BA1 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 16-KB code flash, 8-KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and hardware security (AES128/256, TRNG). It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A32DNJ#BA1 datasheet, R7FA2E2A32DNJ#BA1 pinout, R7FA2E2A32DNJ#BA1 application, or R7FA2E2A32DNJ#BA1 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +85°C industrial temperature grade, 16-KB flash capacity, CAN bus integration, and low-power analog peripherals including temperature sensor and comparator.

Technical Context

The R7FA2E2A32DNJ#BA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, debug via SW-DP, and safety features including ECC in SRAM, ADC self-diagnosis, and Clock Frequency Accuracy Measurement Circuit (CAC). Its system-level timing relies on multiple on-chip oscillators (HOCO/MOCO/LOCO) with trim capability and independent IWDT clock source.

Peripheral connectivity includes one SCI supporting UART/IIC/SPI/Smart Card modes, one I3C interface, one SPI channel, and a dedicated CAN module. Analog subsystem comprises ADC12 with 4 selectable input channels, DAC12, on-die temperature sensor, and two low-power analog comparators with configurable speed.

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended to connect to VSS or left open.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R7FA2E2A32DNJ#BA1, the R7FA2E1A32DNJ#BA1 removes CAN and reduces ADC inputs, lowering system cost but limiting fieldbus integration; the R7FA2L1A32DNJ#BA1 sacrifices clock speed, security, and safety features for lowest power consumption in simple control applications.

Availability

R7FA2E2A32DNJ#BA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA2E2A32DNJ#BA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA2E2 Group delivers ultra-low-power, secure, and safety-certified Arm Cortex-M23 MCUs targeting cost-sensitive industrial and consumer edge devices with stringent power and reliability requirements.

FAQ

What is the maximum operating frequency of the R7FA2E2A32DNJ#BA1?

The R7FA2E2A32DNJ#BA1 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) configured at 48 MHz or via external crystal sources. The MCU maintains full peripheral functionality-including CAN, ADC, and timers-at this frequency, enabling real-time processing in demanding edge applications.

Does the R7FA2E2A32DNJ#BA1 support CAN bus communication?

Yes, the R7FA2E2A32DNJ#BA1 integrates a full CAN 2.0B controller with message RAM and filtering capabilities. It supports bit rates up to 1 Mbps and includes dedicated registers for transmit/receive buffers and error handling. While it requires an external CAN transceiver for physical layer interfacing, the on-chip controller eliminates the need for additional protocol-handling logic or software stacks.

What package type and pin count does the R7FA2E2A32DNJ#BA1 use?

The R7FA2E2A32DNJ#BA1 uses a 20-pin HWQFN package measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed die pad. This package is rated for industrial temperature range (-40°C to +85°C) and supports 15 GPIOs with 5-V tolerance on P400 and P401 pins. Pin assignments match other RA2E2 variants for layout reuse across memory configurations.

How much flash and SRAM memory does the R7FA2E2A32DNJ#BA1 include?

The R7FA2E2A32DNJ#BA1 contains 16 KB of code flash memory, 2 KB of data flash memory (rated for 100,000 program/erase cycles), and 8 KB of SRAM with ECC protection. The code flash supports read-while-write operation and secure boot; data flash enables reliable parameter storage; ECC-SRAM prevents silent data corruption in safety-critical applications.

What safety and security features are implemented in the R7FA2E2A32DNJ#BA1?

The R7FA2E2A32DNJ#BA1 includes ECC on SRAM, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT), ADC self-diagnosis, and register write protection. Security features comprise AES128/256 acceleration, True Random Number Generator (TRNG), and memory protection units. These meet foundational requirements for IEC 61508 SIL2 and ISO/SAE 21434 compliance when properly configured.