Renesas R7FA2E2A72DNK#AA1

Overview

R7FA2E2A72DNK#AA1 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 64-KB code flash, 8-KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and functional safety features including ECC in SRAM and ADC self-diagnosis - deployed in industrial sensor nodes and battery-powered metering systems.

For engineers reviewing the R7FA2E2A72DNK#AA1 datasheet, R7FA2E2A72DNK#AA1 pinout, R7FA2E2A72DNK#AA1 application, or R7FA2E2A72DNK#AA1 equivalent, key selection criteria include its -40°C to +85°C temperature grade, HWQFN24 package with 19 GPIOs (2 × 5-V tolerant), dual watchdog timers (WDT/IWDT), and I3C/SPI/SCI connectivity for mixed-signal edge-node control.

Technical Context

The R7FA2E2A72DNK#AA1 implements an Armv8-M architecture Cortex-M23 core with Memory Protection Unit (8 regions), debug via SW-DP, and low-latency interrupt handling through NVIC and ICU. It integrates a dedicated Event Link Controller (ELC) enabling direct peripheral-to-peripheral triggering without CPU intervention.

Its analog subsystem includes a 12-bit ADC with 8 input channels, on-die temperature sensor (TSN), and low-power analog comparators (ACMPLP), all referenced to configurable VREFH0/VREFL0 pins. Power management supports multiple low-power modes with clock gating, DTC-assisted data transfers, and independent 15-kHz IWDT oscillator for fail-safe recovery.

Key Specifications

Pinout & Package

Package: HWQFN24 (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended connected to VSS. Pin count: 24 leads, including 19 GPIOs, 3 power/ground, 2 debug, and dedicated analog reference pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A72DNK#AA1, R7FA2E2A73CNK#AA1 extends temperature range and data retention, while R7FA2E1A72DNF#AA0 reduces feature set and increases package size - making R7FA2E2A72DNK#AA1 optimal for compact, CAN-enabled industrial edge nodes at commercial temperature grade.

Availability

R7FA2E2A72DNK#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, BLDC motor controllers, and building automation systems requiring stable component supply across multi-year production cycles.

Supply support for R7FA2E2A72DNK#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise applications.

The RA2E2 group delivers ultra-low-power, safety-certifiable Arm Cortex-M23 MCUs targeting cost-sensitive, battery-operated, and functional-safety-aware embedded systems - emphasizing energy efficiency, integrated analog, and simplified certification paths.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A72DNK#AA1?

The R7FA2E2A72DNK#AA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. It includes an 8-region Memory Protection Unit (MPU), single-cycle integer multiplier, and 19-cycle integer divider. This architecture enables efficient execution of real-time tasks while supporting TrustZone-M for secure partitioning - essential for firmware integrity in the R7FA2E2A72DNK#AA1.

Does the R7FA2E2A72DNK#AA1 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A72DNK#AA1 integrates a full CAN 2.0B-compliant module supporting both standard and extended frame formats, bit rates up to 1 Mbps, and automatic retransmission. It includes dedicated message RAM, transmit/receive FIFOs, and error counters - enabling robust fieldbus communication in industrial control networks without external transceivers. The CAN module is fully supported in the R7FA2E2A72DNK#AA1's peripheral set.

What analog peripherals are included in the R7FA2E2A72DNK#AA1, and how are they configured?

The R7FA2E2A72DNK#AA1 includes a 12-bit successive approximation ADC (ADC12) with 8 selectable input channels, a 12-bit DAC (DAC12), an on-die temperature sensor (TSN), and two low-power analog comparators (ACMPLP0/1). Configuration is performed via dedicated registers: VREFH0/VREFL0 pins define ADC reference, while ACMPLP supports external or internal voltage references and programmable response speed - all verified in the R7FA2E2A72DNK#AA1 datasheet Rev.1.50.

What package type and pin count does the R7FA2E2A72DNK#AA1 use?

The R7FA2E2A72DNK#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 provides 19 general-purpose I/O pins, including two 5-V tolerant ports (P400 and P401), and dedicated pins for SWD debug, analog reference, reset, and clock sources - matching the physical layout defined in Figure 1.3 of the R7FA2E2A72DNK#AA1 datasheet.

What functional safety and security features does the R7FA2E2A72DNK#AA1 provide?

The R7FA2E2A72DNK#AA1 includes ECC in SRAM, SRAM parity error checking, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), CRC calculator, Data Operation Circuit (DOC), Port Output Enable for GPT (POEG), Independent Watchdog Timer (IWDT), and AES128/256 encryption with TRNG. These features collectively support IEC 61508 SIL2 and ISO 26262 ASIL-B development workflows - confirmed in the R7FA2E2A72DNK#AA1 safety manual and security documentation.