Renesas R7FA2E2A34CNJ#HA0

Overview

R7FA2E2A34CNJ#HA0 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), designed for industrial sensor nodes and battery-powered edge devices.

For engineers reviewing the R7FA2E2A34CNJ#HA0 datasheet, R7FA2E2A34CNJ#HA0 pinout, R7FA2E2A34CNJ#HA0 application, or R7FA2E2A34CNJ#HA0 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +125°C extended temperature rating, 1.6–5.5 V wide supply range, dual watchdog timers (WDT/IWDT), and I3C/SPI/SCI peripheral integration for compact, safety-aware embedded control.

Technical Context

The R7FA2E2A34CNJ#HA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling secure partitioning of firmware and data in resource-constrained systems. Its clock system integrates HOCO/MOCO/LOCO oscillators with trim capability and a dedicated IWDT oscillator (15 kHz), ensuring robust timing across voltage and temperature extremes.

Peripheral interconnect is managed via Event Link Controller (ELC) and Data Transfer Controller (DTC), allowing autonomous signal routing and memory transfers without CPU intervention. The analog subsystem includes ADC12 with 4 selectable input channels, on-die temperature sensor (TSN), and low-power analog comparators (ACMPLP) with configurable speed/power trade-offs.

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad (recommended connection to VSS), rated for -40°C to +125°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A34CNK#HA0, the R7FA2E2A34CNJ#HA0 saves board space and BOM cost while retaining full feature parity except I/O count; versus R7FA2E1A34CNJ#HA0, it adds CAN, I3C, and hardware AES - critical for functional safety and secure connected-device designs.

Availability

R7FA2E2A34CNJ#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body electronics, and portable medical monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA2E2A34CNJ#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA2E2 group targets ultra-low-power, cost-optimized embedded applications demanding security, safety, and extended temperature operation - with R7FA2E2A34CNJ#HA0 delivering the smallest-footprint, highest-feature-density option in the series.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A34CNJ#HA0?

The R7FA2E2A34CNJ#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 Memory Protection Unit (MPU) with 8 regions, debug support via SW-DP, and TrustZone security extensions. All timing-critical operations in the R7FA2E2A34CNJ#HA0 - including ADC sampling, PWM generation, and CAN bit timing - are synchronized to this 48 MHz clock source.

Does the R7FA2E2A34CNJ#HA0 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A34CNJ#HA0 integrates a full CAN 2.0B-compliant controller with programmable bit timing, message filtering, and FIFO buffering. It supports standard (11-bit) and extended (29-bit) identifier formats, loopback mode for self-test, and automatic retransmission on error. The CAN module in the R7FA2E2A34CNJ#HA0 is fully functional without external transceivers - though a physical layer IC (e.g., TJA1042) is required for bus connection.

What are the memory resources available on the R7FA2E2A34CNJ#HA0?

The R7FA2E2A34CNJ#HA0 provides 16-KB of on-chip code flash memory (with 100,000 program/erase cycles), 2-KB of data flash memory (also rated for 100,000 cycles), and 8-KB of SRAM with built-in ECC for error detection and correction. The flash includes option-setting memory for boot configuration and lock bits to prevent unauthorized readout. These memory resources in the R7FA2E2A34CNJ#HA0 are sufficient for bootloader, application firmware, and runtime data storage in compact edge-node deployments.

What is the operating temperature range and package type of the R7FA2E2A34CNJ#HA0?

The R7FA2E2A34CNJ#HA0 is packaged in a 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch) with exposed die pad and is qualified for operation from -40°C to +125°C. This extended temperature grade is explicitly defined in Renesas' datasheet revision 1.50 and validated across all electrical parameters. The R7FA2E2A34CNJ#HA0's thermal design allows direct mounting on high-temperature PCBs in engine compartments or industrial control cabinets without derating.

Which security and safety features are hardware-accelerated in the R7FA2E2A34CNJ#HA0?

The R7FA2E2A34CNJ#HA0 includes hardware-accelerated AES128/256 encryption/decryption, True Random Number Generation (TRNG), Clock Frequency Accuracy Measurement Circuit (CAC), Cyclic Redundancy Check (CRC) calculator, Data Operation Circuit (DOC), and SRAM ECC. Safety features include independent watchdog timer (IWDT) with dedicated oscillator, flash area protection, ADC self-diagnosis, and illegal memory access detection - all implemented in silicon and active at power-on reset in the R7FA2E2A34CNJ#HA0.