Renesas R7FA2E2A54CNJ#HA0

Overview

R7FA2E2A54CNJ#HA0 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 32-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 systems requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A54CNJ#HA0 datasheet, R7FA2E2A54CNJ#HA0 pinout, R7FA2E2A54CNJ#HA0 application, or R7FA2E2A54CNJ#HA0 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +125°C industrial temperature grade, 15 GPIOs with 5-V tolerance, dual low-power timers (AGTW), and I3C/SPI/SCI connectivity for sensor fusion and secure edge control.

Technical Context

The R7FA2E2A54CNJ#HA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling robust partitioning for safety-critical firmware. Its clock system integrates HOCO (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-dedicated 15-kHz oscillator, all with trim capability for precision timing across voltage and temperature.

System-level features include Event Link Controller (ELC) for CPU-free peripheral coordination, Data Transfer Controller (DTC) for autonomous data movement, and safety mechanisms such as SRAM ECC, flash area protection, ADC self-diagnosis, and Clock Frequency Accuracy Measurement Circuit (CAC) - all validated for IEC 61508 SIL2 and ISO 26262 ASIL-B readiness.

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS or left floating. Industrial-grade thermal performance rated for continuous operation up to +125°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A54CNK#HA0, the R7FA2E2A54CNJ#HA0 saves board space and routing complexity while retaining full CAN, I3C, and safety features; versus R7FA2E1A54CNJ#HA0, it adds essential automotive and industrial connectivity plus certified safety mechanisms - making it the minimal viable option for ASIL-B or SIL2 designs.

Availability

R7FA2E2A54CNJ#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, automotive body controllers, and medical wearables requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA2E2A54CNJ#HA0 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of MCU innovation and manufacturing excellence.

The RA2E2 group is designed specifically for ultra-low-power, cost-sensitive industrial and consumer applications requiring functional safety, security, and seamless scalability within the Arm-based RA family - targeting battery-operated edge devices with stringent reliability demands.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A54CNJ#HA0?

The R7FA2E2A54CNJ#HA0 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 single-cycle integer multiplier, 19-cycle divider, and Memory Protection Unit with eight configurable regions - all confirmed in the R01DS0387EJ0150 datasheet Rev. 1.50. The R7FA2E2A54CNJ#HA0 achieves deterministic real-time performance while maintaining ultra-low power consumption in both active and sleep modes.

Does the R7FA2E2A54CNJ#HA0 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A54CNJ#HA0 integrates a CAN 2.0B-compliant controller supporting both standard and extended frame formats, with bit rates up to 1 Mbps. This module is fully functional per ISO 11898-1 and includes message buffering, error handling, and loopback testing modes - verified in Section 1.7 and Table 1.12 of the R01DS0387EJ0150 datasheet. The R7FA2E2A54CNJ#HA0 uses this CAN interface for robust communication in industrial automation and automotive subsystems.

What are the memory resources available on the R7FA2E2A54CNJ#HA0?

The R7FA2E2A54CNJ#HA0 provides 32-KB of on-chip code flash memory, 2-KB of data flash memory rated for 100,000 program/erase cycles, and 8-KB of SRAM with built-in ECC protection. These memory resources are detailed in Tables 1.2 and 1.11 of the R01DS0387EJ0150 datasheet. The R7FA2E2A54CNJ#HA0 leverages this configuration for secure firmware storage, runtime parameter logging, and safety-critical data buffering without external memory.

Which package type and pin count does the R7FA2E2A54CNJ#HA0 use?

The R7FA2E2A54CNJ#HA0 uses a 20-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad, as specified in Figure 1.4 and Table 1.11 of the R01DS0387EJ0150 datasheet. This package supports 15 general-purpose I/O pins, two 5-V-tolerant pins (P400/P401), and industrial-grade thermal performance up to +125°C ambient. The R7FA2E2A54CNJ#HA0's compact footprint enables high-density PCB layouts in space-constrained applications like portable medical devices.

What safety and security features are included in the R7FA2E2A54CNJ#HA0?

The R7FA2E2A54CNJ#HA0 includes SRAM ECC, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT), register write protection, and illegal memory access detection - all documented in Sections 1.3 and Table 1.7 of the R01DS0387EJ0150 datasheet. Security features comprise AES-128/256 acceleration and True Random Number Generator (TRNG). The R7FA2E2A54CNJ#HA0 is architected to meet foundational requirements for IEC 61508 SIL2 and ISO 26262 ASIL-B compliance.