Renesas R7FA2E1A72DNE#AA0

Overview

R7FA2E1A72DNE#AA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 64 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 and industrial sensor nodes.

For engineers reviewing the R7FA2E1A72DNE#AA0 datasheet, R7FA2E1A72DNE#AA0 pinout, R7FA2E1A72DNE#AA0 application, or R7FA2E1A72DNE#AA0 equivalent, key selection criteria include its 48-pin HWQFN package with 37 I/O pins, -40°C to +85°C industrial temperature grade, CTSU2-based touch interface support, and dual low-power timers (AGT × 2) for event-driven wake-up in energy-constrained designs.

Technical Context

The R7FA2E1A72DNE#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling secure partitioning of firmware and data. Its clock system integrates HOCO (48 MHz), LOCO (32.768 kHz), and SOSC for RTC, with Clock Frequency Accuracy Measurement Circuit (CAC) for oscillator calibration.

Peripheral integration includes four SCI modules supporting UART, SPI, I²C, and smart card protocols; one dedicated I²C bus interface; one SPI channel; two low-power analog comparators (ACMPLP); and a 13-channel 12-bit ADC with internal reference and temperature sensor input - all accessible via 37 general-purpose I/O pins with 5-V tolerance on three pins.

Key Specifications

Pinout & Package

Package: 48-pin HWQFN (7 mm × 7 mm, 0.5 mm pitch), exposed thermal pad recommended to connect to VSS. Supports industrial temperature range (-40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A92DNE#AA0 and R7FA2E1A52DNE#AA0, the R7FA2E1A72DNE#AA0 balances flash capacity (64 KB), touch channel count (20), and industrial temperature support - making it optimal for mid-complexity edge nodes requiring field-upgradable firmware and robust capacitive interfaces without over-provisioning resources.

Availability

R7FA2E1A72DNE#AA0 is available at Aetrix Electronics and suitable for smart home controllers, industrial sensor nodes, and medical wearables requiring stable component supply across extended product lifecycles.

Supply support for R7FA2E1A72DNE#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 targets cost-sensitive, ultra-low-power applications demanding security, analog integration, and capacitive touch - designed specifically for battery-operated edge devices with stringent energy budgets.

FAQ

What is the maximum operating frequency of the R7FA2E1A72DNE#AA0?

The R7FA2E1A72DNE#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 an external crystal up to 20 MHz multiplied via PLL. The core maintains full performance across its specified industrial temperature range (-40°C to +85°C), and the R7FA2E1A72DNE#AA0 includes Clock Frequency Accuracy Measurement Circuit (CAC) to validate oscillator stability under varying conditions.

Does the R7FA2E1A72DNE#AA0 support capacitive touch sensing?

Yes, the R7FA2E1A72DNE#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 20 touch channels. It enables robust touch button, slider, and proximity detection through dielectric materials like glass or plastic. The R7FA2E1A72DNE#AA0's CTSU2 includes built-in noise cancellation and auto-calibration features, and touch pins are mapped to specific GPIOs such as P000–P015 and P100–P112 per the 48-pin HWQFN pinout.

What security features are implemented in the R7FA2E1A72DNE#AA0?

The R7FA2E1A72DNE#AA0 includes AES128/256 hardware acceleration, a True Random Number Generator (TRNG), Cyclic Redundancy Check (CRC) calculator, Data Operation Circuit (DOC), Memory Protection Unit (MPU), and register write protection. These features collectively support secure boot, encrypted communication, tamper-resistant data storage, and runtime integrity checking - meeting foundational requirements for IEC 62443-3-3 SL2 compliance. All security blocks operate independently of the main CPU in the R7FA2E1A72DNE#AA0.

What is the package type and pin count of the R7FA2E1A72DNE#AA0?

The R7FA2E1A72DNE#AA0 uses a 48-pin HWQFN package measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal pad. It provides 37 general-purpose I/O pins, including 3 with 5-V tolerance, 26 N-channel open-drain outputs, and dedicated pins for SWD debug (SWCLK/SWDIO), crystal oscillators (XTAL/EXTAL/XCIN/XCOUT), and analog functions (AVCC0/AVSS0/VREFH0/VREFL0). This package is optimized for compact, thermally efficient PCB layouts.

How much flash and RAM memory does the R7FA2E1A72DNE#AA0 have?

The R7FA2E1A72DNE#AA0 includes 64 KB of code flash memory, 4 KB of data flash memory (rated for 100,000 program/erase cycles), and 16 KB of SRAM with parity protection. The code flash supports read-while-write and block erase operations, while the data flash provides non-volatile parameter storage. The SRAM parity feature detects single-bit errors in real time - critical for safety-aware applications. This memory configuration is fixed for the R7FA2E1A72DNE#AA0 and cannot be upgraded in the same package variant.