Renesas R7FA2E1A72DFM#AA0

Overview

R7FA2E1A72DFM#AA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 128-KB code flash, 16-KB SRAM, a 12-bit ADC, Capacitive Sensing Unit (CTSU2), and integrated security functions including AES128/256 and TRNG - deployed in battery-powered HMI, sensor nodes, and industrial control edge devices.

For engineers reviewing the R7FA2E1A72DFM#AA0 datasheet, R7FA2E1A72DFM#AA0 pinout, R7FA2E1A72DFM#AA0 application, or R7FA2E1A72DFM#AA0 equivalent, key selection considerations include its -40°C to +85°C industrial temperature grade, 64-pin LQFP (0.5 mm pitch) package, CTSU2-based touch interface support, dual AGT timers for low-power event timing, and hardware CRC/DOC for functional safety compliance.

Technical Context

The R7FA2E1A72DFM#AA0 implements Armv8-M architecture with Memory Protection Unit (8 regions), CoreSight™ MTB-M23 trace, and SW-DP debug interface. It integrates four independent clock sources - HOCO (48 MHz), SOSC (32.768 kHz), LOCO, and IWDT-dedicated 15 kHz oscillator - enabling precise clock domain management across low-power and real-time operation modes.

Its system-level peripherals include Event Link Controller (ELC) for CPU-free peripheral chaining, Data Transfer Controller (DTC) for autonomous memory transfers, and Safety features such as SRAM parity checking, Flash area protection, ADC self-diagnosis, and Clock Frequency Accuracy Measurement Circuit (CAC) - all supporting IEC 61508 SIL2 and ISO 26262 ASIL-B readiness.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant Sn finish, exposed pad recommended connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A92DFM#AA0, the R7FA2E1A72DFM#AA0 trades extended temperature rating for lower unit cost while retaining identical feature set and pin compatibility; versus STM32L071KBT6, it delivers superior security, touch integration, and Armv8-M architectural advantages at comparable power consumption.

Availability

R7FA2E1A72DFM#AA0 is available at Aetrix Electronics and suitable for smart home remotes, industrial sensor nodes, medical wearables, and appliance control panels requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R7FA2E1A72DFM#AA0 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 industrial, automotive, and enterprise markets.

The RA2E1 group targets cost-sensitive, ultra-low-power embedded applications - delivering Arm Cortex-M23 security, capacitive touch, and functional safety features in compact packages for next-generation IoT endpoints.

FAQ

What is the maximum operating frequency of the R7FA2E1A72DFM#AA0?

The R7FA2E1A72DFM#AA0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal, and is supported across its full industrial temperature range (-40°C to +85°C). The MCU maintains timing accuracy via the Clock Frequency Accuracy Measurement Circuit (CAC), which validates oscillator stability in real time.

Does the R7FA2E1A72DFM#AA0 support capacitive touch sensing?

Yes, the R7FA2E1A72DFM#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 30 touch channels with built-in noise cancellation and auto-calibration. It is designed for direct implementation of touch buttons, sliders, and wheels without external components - confirmed in the RA2E1 datasheet R01DS0386EJ0170 Section 1.9 and Table 1.13.

What security features are included in the R7FA2E1A72DFM#AA0?

The R7FA2E1A72DFM#AA0 includes AES128/256 encryption engines, a True Random Number Generator (TRNG), register write protection, Flash area protection, and SRAM parity checking. These features collectively support secure boot, encrypted firmware updates, and tamper-resistant configuration - all documented in Section 1.10 (Security and Encryption) of the official datasheet.

Which package type does the R7FA2E1A72DFM#AA0 use?

The R7FA2E1A72DFM#AA0 uses a 64-pin LQFP package with 0.5 mm pitch (10 mm × 10 mm body), designated by the "FM" suffix in its part number per Renesas' numbering scheme (Figure 1.2, Page 6). This package is RoHS-compliant with Sn-only terminal finish and includes an exposed die pad recommended for connection to VSS.

How many analog-to-digital converter (ADC) channels does the R7FA2E1A72DFM#AA0 have?

The R7FA2E1A72DFM#AA0 features a 12-bit successive approximation ADC (ADC12) with up to 13 selectable analog input channels, including dedicated pins AN000–AN010 and AN017–AN022. It also supports internal sources such as the Temperature Sensor (TSN) and voltage reference for self-test and calibration - as specified in Table 1.8 and Figure 1.1 of the R01DS0386EJ0170 datasheet.