Renesas R7FA2E1A92DFJ#AA0

Overview

R7FA2E1A92DFJ#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 (AES128/256, 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 R7FA2E1A92DFJ#AA0 datasheet, R7FA2E1A92DFJ#AA0 pinout, R7FA2E1A92DFJ#AA0 application, or R7FA2E1A92DFJ#AA0 equivalent, key selection criteria include its 32-pin LQFP package, -40°C to +85°C industrial temperature grade, CTSU2-based touch sensing capability, dual AGT timers for low-power event timing, and hardware CRC/DOC for data integrity in embedded control loops.

Technical Context

The R7FA2E1A92DFJ#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling secure partitioning of firmware and peripherals. Its clock system integrates multiple oscillators-HOCO (48 MHz), SOSC (32.768 kHz), and LOCO-with Clock Frequency Accuracy Measurement Circuit (CAC) for real-time oscillator calibration.

System-level features include Event Link Controller (ELC) for CPU-free peripheral chaining, Data Transfer Controller (DTC) for autonomous memory transfers, and dual Independent Watchdog Timers (WDT/IWDT) with dedicated clock sources for fail-safe recovery. Safety is reinforced by SRAM parity checking, flash area protection, and ADC self-diagnosis.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), industrial-grade (-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 R7FA2E1A92DFJ#AA0 saves PCB area and component count in space-constrained HMI designs; versus R7FA2E1A72DFJ#AA0, it provides double flash capacity for feature-rich firmware or secure dual-bank OTA updates.

Availability

R7FA2E1A92DFJ#AA0 is available at Aetrix Electronics and suitable for smart home controls, portable medical devices, industrial sensor nodes, and appliance HMI requiring stable component supply across long production lifecycles.

Supply support for R7FA2E1A92DFJ#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 markets.

The RA2E1 Group is designed for ultra-low-power, cost-sensitive embedded applications demanding robust security, capacitive touch, and functional safety - targeting battery-operated and space-constrained edge devices.

FAQ

What is the maximum operating frequency of the R7FA2E1A92DFJ#AA0?

The R7FA2E1A92DFJ#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 sustained across the full industrial temperature range (-40°C to +85°C) with appropriate voltage supply (1.6–5.5 V).

Does the R7FA2E1A92DFJ#AA0 support capacitive touch sensing?

Yes, the R7FA2E1A92DFJ#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 11 touch electrode pins in its 32-pin LQFP configuration. It provides built-in noise cancellation, auto-calibration, and low-power scanning modes - enabling reliable touch detection through plastic, glass, or overlay materials without external components.

What security features are implemented in the R7FA2E1A92DFJ#AA0?

The R7FA2E1A92DFJ#AA0 includes AES128/256 encryption engines, a True Random Number Generator (TRNG), Memory Protection Unit (MPU), flash area protection, and register write protection. These features collectively support secure boot, encrypted firmware updates, and runtime data confidentiality - meeting foundational requirements for IEC 62443 and ISO/SAE 21434 compliance.

How many analog-to-digital converter channels does the R7FA2E1A92DFJ#AA0 have?

The R7FA2E1A92DFJ#AA0 features a 12-bit successive approximation ADC (ADC12) with up to 11 external analog input channels (AN000–AN010, AN017–AN022), plus internal sources including temperature sensor output and reference voltages. All channels are accessible in the 32-pin LQFP package and support programmable sampling times and scan sequences.

What is the operating temperature range and package type of the R7FA2E1A92DFJ#AA0?

The R7FA2E1A92DFJ#AA0 uses a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch) and is rated for industrial operation from -40°C to +85°C. Its Pb-free Sn terminal finish complies with RoHS directives, and the package supports standard reflow soldering profiles without special handling requirements.