Renesas R7FA2E2A52DNK#AA1

Overview

R7FA2E2A52DNK#AA1 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 (AES128/256, TRNG). It targets battery-powered industrial sensors, smart metering endpoints, and low-cost IoT edge nodes requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A52DNK#AA1 datasheet, R7FA2E2A52DNK#AA1 pinout, R7FA2E2A52DNK#AA1 application, or R7FA2E2A52DNK#AA1 equivalent, key selection criteria include its -40°C to +85°C industrial temperature rating, HWQFN24 package with 19 GPIOs (2× 5-V tolerant), dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and I3C/SPI/SCI peripheral set for sensor fusion and secure local communication.

Technical Context

The R7FA2E2A52DNK#AA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling memory isolation for safety-critical tasks. Its clock system integrates HOCO (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-dedicated 15 kHz oscillator with trim capability.

Peripheral integration includes one SCI supporting UART, SPI, IIC, and smart card modes; one dedicated SPI; one I3C bus interface; six 16-bit GPT timers (11 PWM outputs); two AGTW low-power timers; and safety features including CAC, CRC calculator, DOC, and ADC self-diagnosis - all coordinated via Event Link Controller (ELC) to minimize CPU intervention.

Key Specifications

Pinout & Package

Package: HWQFN24 (4 mm × 4 mm, 0.5 mm pitch) with exposed die pad recommended for connection to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A52DNK#AA1, the RA2E1 alternative omits CAN and security accelerators for cost-sensitive designs, while the RA4M1 offers higher compute headroom at the expense of power efficiency and package size - making R7FA2E2A52DNK#AA1 optimal for balanced low-power, secure, and bus-connected edge nodes.

Availability

R7FA2E2A52DNK#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meter endpoints, and low-cost BLDC motor drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA2E2A52DNK#AA1 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets with emphasis on reliability and functional safety.

The RA2E2 group is designed for ultra-low-power, cost-optimized industrial and consumer edge devices requiring embedded security, CAN connectivity, and extended temperature operation - positioning R7FA2E2A52DNK#AA1 as a foundational MCU for certified, long-lifecycle embedded systems.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A52DNK#AA1?

The R7FA2E2A52DNK#AA1 features an Arm Cortex-M23 core with a maximum operating frequency of 48 MHz and implements the Armv8-M architecture with TrustZone-M security extensions. It includes an 8-region Memory Protection Unit (MPU) and supports single-cycle integer multiply and 19-cycle divide operations - delivering deterministic real-time performance for safety-aware applications while maintaining ultra-low power consumption.

Does the R7FA2E2A52DNK#AA1 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A52DNK#AA1 integrates a CAN 2.0B-compliant controller supporting both standard and extended frame formats with bit rates up to 1 Mbps. It includes message objects, FIFO buffers, and automatic retransmission - enabling robust communication in industrial automation and building control networks without requiring external CAN transceivers beyond physical layer interfacing.

What are the memory resources available on the R7FA2E2A52DNK#AA1?

The R7FA2E2A52DNK#AA1 provides 32 KB of code flash memory, 2 KB of data flash memory (rated for 100,000 program/erase cycles), and 8 KB of on-chip SRAM with ECC protection. The code flash supports dual-bank operation for safe over-the-air updates, and the data flash enables reliable non-volatile parameter storage - essential for calibration data and device configuration in field-deployed equipment.

Which package type and pin count does the R7FA2E2A52DNK#AA1 use, and what are its thermal characteristics?

The R7FA2E2A52DNK#AA1 uses a 24-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad recommended for connection to VSS. It operates across -40°C to +85°C and achieves thermal resistance θ_JA of 42°C/W under standard JEDEC conditions - enabling reliable operation in enclosed industrial enclosures without forced airflow or heatsinking.

What safety and security features are integrated into the R7FA2E2A52DNK#AA1?

The R7FA2E2A52DNK#AA1 includes SRAM ECC, Clock Frequency Accuracy Measurement Circuit (CAC), CRC calculator, Data Operation Circuit (DOC), ADC self-diagnosis, register write protection, and illegal memory access detection. It also provides AES128/256 acceleration and a True Random Number Generator (TRNG) - collectively supporting IEC 61508 SIL2 and ISO 26262 ASIL-B development workflows without external security ICs.