Renesas R7FA2E1A93CFJ#AA0

Overview

R7FA2E1A93CFJ#AA0 from Renesas Electronics 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 Touch Sensing Unit (CTSU2), and integrated security (AES128/256, TRNG). It targets battery-powered HMI, industrial sensors, and smart home controls requiring robust low-power operation and touch interface.

For engineers reviewing the R7FA2E1A93CFJ#AA0 datasheet, R7FA2E1A93CFJ#AA0 pinout, R7FA2E1A93CFJ#AA0 application, or R7FA2E1A93CFJ#AA0 equivalent, key selection criteria include its 32-pin LQFP package with 23 I/O pins, -40°C to +85°C industrial temperature grade, and support for CTSU2-based touch sensing without external components.

Technical Context

The R7FA2E1A93CFJ#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) and CoreSight™ debug infrastructure (SW-DP, MTB-M23). Its system-level timing relies on multiple clock sources including HOCO (48 MHz), SOSC (32.768 kHz), and LOCO, managed via Clock Frequency Accuracy Measurement Circuit (CAC) for fail-safe clock monitoring.

Peripheral integration centers on event-driven autonomy: Event Link Controller (ELC) enables direct peripheral-to-peripheral triggering without CPU intervention, while Data Transfer Controller (DTC) handles memory transfers upon interrupt. Safety is enforced through SRAM parity checking, flash area protection, independent watchdog timer (IWDT), and register write protection (PRCR).

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 only), tray-packed.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A92DFJ#AA0, the R7FA2E1A93CFJ#AA0 offers identical functionality at the same temperature grade, while versus STM32L071KBT6 it delivers superior touch integration, stronger cryptography, and higher deterministic performance-critical for responsive HMI and secure edge nodes.

Availability

R7FA2E1A93CFJ#AA0 is available at Aetrix Electronics and suitable for smart home controllers, industrial sensor nodes, and medical wearables requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R7FA2E1A93CFJ#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA2E1 Group is designed for cost-sensitive, ultra-low-power embedded applications demanding robust security, capacitive touch, and seamless scalability across pin- and software-compatible Arm Cortex-M23 MCUs.

FAQ

What is the maximum operating frequency of the R7FA2E1A93CFJ#AA0?

The R7FA2E1A93CFJ#AA0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This is achieved via the high-speed on-chip oscillator (HOCO) or external crystal (MOSC), with clock accuracy verified by the integrated Clock Frequency Accuracy Measurement Circuit (CAC). The R7FA2E1A93CFJ#AA0 maintains full peripheral functionality-including ADC12 sampling and CTSU2 scanning-at this speed.

Does the R7FA2E1A93CFJ#AA0 support capacitive touch sensing?

Yes, the R7FA2E1A93CFJ#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 11 touch electrodes (e.g., TS00, TS02–TS07) directly on-chip. It includes automatic noise cancellation, baseline tracking, and low-power scan modes-enabling robust button, slider, and proximity detection without external components. The R7FA2E1A93CFJ#AA0's CTSU2 is fully supported in Renesas' Flexible Software Package (FSP).

What security features does the R7FA2E1A93CFJ#AA0 include?

The R7FA2E1A93CFJ#AA0 includes AES128/256 hardware acceleration, a True Random Number Generator (TRNG), flash area protection, SRAM parity checking, and register write protection (PRCR). These features enable secure boot, encrypted firmware updates, and cryptographic key generation-all without software overhead. The R7FA2E1A93CFJ#AA0 meets foundational requirements for PSA Level 1 certification and supports IEC 62443-3-3 asset protection profiles.

What is the operating voltage range for the R7FA2E1A93CFJ#AA0?

The R7FA2E1A93CFJ#AA0 operates across a wide supply range of 1.6 V to 5.5 V, enabling direct compatibility with single-cell Li-ion, 3.3 V logic, and legacy 5 V systems. Its 5-V-tolerant I/O pins (3 total) allow safe interfacing with 5 V peripherals without level shifters. The Low Voltage Detection (LVD) module provides three programmable thresholds (LVD0/LVD1/LVD2) to trigger controlled shutdown or warning before brownout.

How many I/O pins does the R7FA2E1A93CFJ#AA0 have in its 32-pin LQFP package?

The R7FA2E1A93CFJ#AA0 in the 32-pin LQFP package provides 23 general-purpose I/O pins, plus 3 dedicated input-only pins (P214, P215, P200), 3 5-V-tolerant pins, and 15 N-channel open-drain outputs. Pin functions are fully documented in Table 1.14 and Figure 1.7 of the R01DS0386EJ0170 datasheet. All I/Os support pull-up resistors and configurable drive strength, and the R7FA2E1A93CFJ#AA0's pinout is shared across the RA2E1 family for migration flexibility.