Renesas R7FA2E1A92DFM#AA0

Overview

R7FA2E1A92DFM#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, industrial sensors, and smart metering systems.

For engineers reviewing the R7FA2E1A92DFM#AA0 datasheet, R7FA2E1A92DFM#AA0 pinout, R7FA2E1A92DFM#AA0 application, or R7FA2E1A92DFM#AA0 equivalent, key selection criteria include its -40°C to +85°C industrial temperature rating, 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

This MCU implements the Armv8-M architecture with an 8-region Memory Protection Unit (MPU), 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 oscillator - enabling precise clock domain isolation for safety-critical timing paths.

The system includes dual watchdogs (WDT and independent IWDT), SRAM parity checking, flash area protection, ADC self-diagnosis, and CAC for real-time clock accuracy validation - all supporting IEC 61508 SIL-2 and ISO 26262 ASIL-B readiness in embedded control applications.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), exposed pad recommended connected to VSS. Pin count includes 53 general-purpose I/O pins with 5-V tolerance on 3 pins, 40 N-ch open-drain outputs, and dedicated debug (SWDIO/SWCLK), reset (RES), and clock (XTAL/EXTAL/XCIN/XCOUT) terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A93CFM#AA0, the R7FA2E1A92DFM#AA0 offers identical functionality at lower cost for industrial environments ≤+85°C; versus STM32L552VET6, it delivers superior touch integration and lower power for HMI-centric designs but with less memory headroom.

Availability

R7FA2E1A92DFM#AA0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and medical wearable monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R7FA2E1A92DFM#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, with over 40 years of microcontroller innovation.

The RA2E1 group targets cost-sensitive, ultra-low-power applications demanding robust security, capacitive touch, and functional safety features - designed specifically for battery-operated HMI, sensor edge nodes, and smart utility endpoints.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E1A92DFM#AA0?

The R7FA2E1A92DFM#AA0 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 CoreSight™ MTB-M23 trace capability - all confirmed in the R01DS0386EJ0170 datasheet Rev.1.70. This configuration balances performance and ultra-low-power efficiency for edge-sensing applications.

Does the R7FA2E1A92DFM#AA0 support capacitive touch sensing, and how many channels are available?

Yes, the R7FA2E1A92DFM#AA0 integrates the Capacitive Sensing Unit (CTSU2) supporting up to 30 touch channels with mutual/self-capacitance measurement. The CTSU2 includes built-in scan engine, noise cancellation, and automatic baseline adjustment - enabling robust touch button, slider, and proximity detection without external components, as specified in Table 1.13 of the RA2E1 datasheet.

What are the memory resources available on the R7FA2E1A92DFM#AA0?

The R7FA2E1A92DFM#AA0 provides 128-KB of code flash memory (100,000 program/erase cycles), 4-KB of data flash memory, and 16-KB of SRAM with parity protection. These resources support secure firmware updates, parameter storage, and real-time signal processing - verified in Section 1.2 (Memory) and Table 1.2 of the R01DS0386EJ0170 datasheet.

Which package type and pin count does the R7FA2E1A92DFM#AA0 use?

The R7FA2E1A92DFM#AA0 uses a 64-pin LQFP package with 0.5 mm pitch (10 mm × 10 mm footprint), designated by the "FM" suffix in the part numbering scheme. It provides 53 general-purpose I/O pins, 3 5-V tolerant inputs, and dedicated debug (SWDIO/SWCLK), reset (RES), and clock (XTAL/EXTAL/XCIN/XCOUT) terminals - detailed in Figure 1.3 and Table 1.12 of the datasheet.

What security and functional safety features does the R7FA2E1A92DFM#AA0 include?

The R7FA2E1A92DFM#AA0 includes AES128/256 hardware acceleration, True Random Number Generator (TRNG), SRAM parity checking, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), and dual watchdogs (WDT/IWDT). These features collectively support IEC 61508 SIL-2 and ISO 26262 ASIL-B development workflows - documented in Sections 1.3 (Safety) and 1.4 (Security) of the datasheet.