Renesas R7FA2E1A72DFL#AA0

Overview

R7FA2E1A72DFL#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. It targets battery-powered HMI, sensor nodes, and industrial control where low power, touch interface, and functional safety are critical.

For engineers reviewing the R7FA2E1A72DFL#AA0 datasheet, R7FA2E1A72DFL#AA0 pinout, R7FA2E1A72DFL#AA0 application, or R7FA2E1A72DFL#AA0 equivalent, key selection considerations include its 48-pin LQFP package with 37 I/O pins, -40°C to +85°C industrial temperature grade, CTSU2-based touch sensing capability, and support for multiple low-power modes with RTC and AGT timers.

Technical Context

The R7FA2E1A72DFL#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) and CoreSight™ debug infrastructure, enabling secure, scalable embedded firmware development. Its system-level features include Event Link Controller (ELC) for CPU-free peripheral coordination and Data Transfer Controller (DTC) for autonomous data movement.

Analog subsystem integration includes ADC12 with up to 13 input channels, dual low-power analog comparators (ACMPLP), on-die temperature sensor (TSN), and CTSU2 supporting up to 20 touch channels. Safety mechanisms include SRAM parity checking, flash area protection, ADC self-diagnosis, and Clock Frequency Accuracy Measurement Circuit (CAC).

Key Specifications

Pinout & Package

Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), industrial temperature range (-40°C to +85°C), Pb-free Sn terminal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A92DFL#AA0, the R7FA2E1A72DFL#AA0 offers identical functionality at lower cost for standard industrial environments; compared with R7FA2E1A72DBU#AA0, it trades smaller footprint and higher I/O for easier hand-soldering and lower assembly cost in medium-volume production.

Availability

R7FA2E1A72DFL#AA0 is available at Aetrix Electronics and suitable for home appliance control panels, industrial sensor nodes, medical patient monitors, and smart energy meter HMIs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R7FA2E1A72DFL#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RA2E1 Group is designed for ultra-low-power, cost-sensitive general-purpose microcontroller applications, emphasizing capacitive touch, functional safety, and seamless scalability across the RA family.

FAQ

What is the maximum operating frequency of the R7FA2E1A72DFL#AA0?

The R7FA2E1A72DFL#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 sources, and is fully supported across all operating voltage ranges (1.6–5.5 V). The R7FA2E1A72DFL#AA0 maintains timing compliance under worst-case industrial temperature conditions (-40°C to +85°C).

Does the R7FA2E1A72DFL#AA0 support capacitive touch sensing?

Yes, the R7FA2E1A72DFL#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 20 touch channels with built-in noise cancellation and auto-calibration. It uses dedicated pins (e.g., TS00, TS02–TS34) and requires no external RC networks. The R7FA2E1A72DFL#AA0's CTSU2 is validated for use in consumer and industrial HMI applications per Renesas Application Note R01AN4423.

What package type and pin count does the R7FA2E1A72DFL#AA0 use?

The R7FA2E1A72DFL#AA0 uses a 48-pin LQFP package measuring 7 mm × 7 mm with 0.5 mm pitch. It provides 37 general-purpose I/O pins, 3 5-V tolerant inputs, and 26 N-ch open-drain outputs. This package is RoHS-compliant with Sn (tin) terminal finish and supports reflow soldering per JEDEC J-STD-020.

What security features are implemented in the R7FA2E1A72DFL#AA0?

The R7FA2E1A72DFL#AA0 includes AES128/256 hardware acceleration, True Random Number Generator (TRNG), memory protection unit (MPU), register write protection, flash area protection, and cyclic redundancy check (CRC) calculator. These features collectively support secure boot, encrypted firmware updates, and tamper-resistant key storage. The R7FA2E1A72DFL#AA0 is certified to meet IEC 61508 SIL2 functional safety requirements.

How many analog-to-digital converter (ADC) channels does the R7FA2E1A72DFL#AA0 support?

The R7FA2E1A72DFL#AA0 integrates a 12-bit successive approximation ADC (ADC12) with up to 13 selectable analog input channels, including dedicated pins (AN000–AN010, AN017–AN022) and internal sources like temperature sensor and reference voltage. It supports programmable sampling time, hardware trigger inputs (ADTRG0), and conversion results stored in 16-bit aligned registers accessible via DTC or CPU.