Renesas R7FA2E2A34CNJ#BA1

Overview

R7FA2E2A34CNJ#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 including AES-128/256 and TRNG. It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A34CNJ#BA1 datasheet, R7FA2E2A34CNJ#BA1 pinout, R7FA2E2A34CNJ#BA1 application, or R7FA2E2A34CNJ#BA1 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +125°C industrial temperature grade, 1.6–5.5 V wide supply range, dual watchdog timers (WDT/IWDT), and I3C/SPI/SCI connectivity for sensor fusion and secure edge node design.

Technical Context

The R7FA2E2A34CNJ#BA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling secure partitioning of firmware and data in resource-constrained embedded systems. Its clock system integrates HOCO/MOCO/LOCO oscillators with trim capability and a dedicated IWDT oscillator for fail-safe reset independence.

Peripheral integration includes a 12-bit ADC with up to four input channels, two AGTW timers for low-power event counting, six GPT16 channels supporting BLDC motor PWM outputs, and Event Link Controller (ELC) for CPU-free peripheral synchronization-critical for deterministic real-time response in industrial control loops.

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended connected to VSS for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A34CNK#BA1, the R7FA2E2A34CNJ#BA1 saves board area and component count while retaining full RA2E2 feature set; versus R7FA2E1A34CNJ#AA0, it adds CAN, I3C, AES-256, and +125°C operation-making it the only option for certified industrial or automotive body electronics.

Availability

R7FA2E2A34CNJ#BA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy metering, BLDC motor control edge nodes, and automotive body electronics requiring stable component supply across long production lifecycles.

Supply support for R7FA2E2A34CNJ#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 industrial, automotive, and enterprise markets.

The RA2E2 group is designed for ultra-low-power, cost-sensitive embedded applications demanding functional safety, security, and extended temperature operation-targeting smart meters, industrial sensors, and battery-powered edge devices.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A34CNJ#BA1?

The R7FA2E2A34CNJ#BA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. This core includes a Memory Protection Unit (MPU) with eight configurable regions, single-cycle integer multiply, and 19-cycle integer divide-enabling deterministic real-time performance and memory isolation for secure firmware partitioning in the R7FA2E2A34CNJ#BA1.

Does the R7FA2E2A34CNJ#BA1 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A34CNJ#BA1 integrates a CAN 2.0B-compliant controller supporting both standard and extended frame formats, bit rates up to 1 Mbps, and automatic retransmission. It includes dedicated message RAM, acceptance filtering, and loopback self-test mode-making it suitable for industrial automation and automotive body networks without requiring external CAN transceivers beyond physical layer interfacing in the R7FA2E2A34CNJ#BA1.

What analog peripherals are included in the R7FA2E2A34CNJ#BA1, and how many input channels does the ADC support?

The R7FA2E2A34CNJ#BA1 includes a 12-bit successive approximation ADC (ADC12) with four selectable analog input channels (AN005, AN006, AN009, AN010), a 12-bit DAC (DAC12), an on-die temperature sensor (TSN), and two low-power analog comparators (ACMPLP). The ADC supports internal reference voltage and temperature sensor inputs, enabling self-calibration and ambient monitoring without external components in the R7FA2E2A34CNJ#BA1.

What is the operating temperature range and package type of the R7FA2E2A34CNJ#BA1?

The R7FA2E2A34CNJ#BA1 is qualified for industrial operation from -40°C to +125°C and uses a 20-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad. This package supports high thermal conductivity and EMI suppression when the pad is connected to VSS, meeting stringent reliability requirements for under-hood and outdoor deployments in the R7FA2E2A34CNJ#BA1.

Does the R7FA2E2A34CNJ#BA1 include hardware security features, and which cryptographic algorithms are supported?

Yes, the R7FA2E2A34CNJ#BA1 integrates dedicated hardware security including AES-128 and AES-256 encryption/decryption engines, a True Random Number Generator (TRNG), and secure key storage. These features accelerate cryptographic operations for secure boot, firmware authentication, and encrypted communication-reducing software overhead and attack surface compared to software-only implementations in the R7FA2E2A34CNJ#BA1.