Renesas R7FA2E1A93CFK#AA0

Overview

R7FA2E1A93CFK#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 R7FA2E1A93CFK#AA0 datasheet, R7FA2E1A93CFK#AA0 pinout, R7FA2E1A93CFK#AA0 application, or R7FA2E1A93CFK#AA0 equivalent, key selection criteria include its 64-pin LQFP-0.8 mm pitch package, -40°C to +85°C industrial temperature grade, CTSU2-based touch channel count (30), and support for dual watchdog timers (WDT/IWDT) with independent clock sources.

Technical Context

The R7FA2E1A93CFK#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling secure partitioning of firmware and data. Its system-level timing relies on multiple clock sources-including HOCO (48 MHz), SOSC (32.768 kHz), and IWDT-dedicated 15-kHz oscillator-allowing precise low-power operation and fail-safe reset behavior.

Peripheral integration centers on event-driven autonomy: the Event Link Controller (ELC) enables direct peripheral-to-peripheral triggering without CPU intervention, while the Data Transfer Controller (DTC) offloads memory transfers during interrupt servicing. Safety features include SRAM parity checking, flash area protection, ADC self-diagnosis, and Clock Frequency Accuracy Measurement Circuit (CAC) for real-time clock validation.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (14 mm × 14 mm, 0.8 mm pitch), RoHS-compliant Sn finish, exposed pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A93CFK#AA0, R7FA2E1A93CFM#AA0 offers higher temperature resilience and tighter pitch for space-constrained layouts, while R7FA2E1A73CFK#AA0 trades flash capacity and ADC channels for lower BOM cost-enabling scalable design reuse across product tiers.

Availability

R7FA2E1A93CFK#AA0 is available at Aetrix Electronics and suitable for smart home thermostats, industrial sensor nodes, medical wearables, and white goods control panels requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.

Supply support for R7FA2E1A93CFK#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, which includes R7FA2E1A93CFK#AA0, was designed specifically for ultra-low-power, cost-sensitive general-purpose microcontroller applications demanding rich analog integration, capacitive touch, and certified security features.

FAQ

What is the maximum operating frequency of the R7FA2E1A93CFK#AA0?

The R7FA2E1A93CFK#AA0 operates at a maximum frequency of 48 MHz using the Arm Cortex-M23 core. This speed is achievable with the High-Speed On-Chip Oscillator (HOCO) or external crystal sources, and is supported across its full industrial temperature range (-40°C to +85°C). The R7FA2E1A93CFK#AA0 maintains timing compliance under all specified voltage (1.6–5.5 V) and thermal conditions.

Does the R7FA2E1A93CFK#AA0 support capacitive touch sensing?

Yes, the R7FA2E1A93CFK#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 30 touch channels. It uses delta-sigma modulation with built-in noise cancellation, enabling reliable touch detection through glass, plastic, or waterproof overlays. The R7FA2E1A93CFK#AA0 requires no external RC components for basic operation and supports automatic calibration routines via firmware.

What security features are implemented in the R7FA2E1A93CFK#AA0?

The R7FA2E1A93CFK#AA0 includes hardware-accelerated AES128/256 encryption, a True Random Number Generator (TRNG), flash area protection, SRAM parity checking, and register write protection. These features enable secure boot, encrypted firmware updates, and cryptographic key generation. The R7FA2E1A93CFK#AA0 does not include a dedicated secure element or PKI accelerator, but its TRNG and AES engine meet requirements for TLS 1.2/1.3 handshakes in resource-constrained devices.

What is the pin count and package type of the R7FA2E1A93CFK#AA0?

The R7FA2E1A93CFK#AA0 uses a 64-pin LQFP package with 0.8 mm pitch (package code FK), measuring 14 mm × 14 mm. It has 53 general-purpose I/O pins, 3 dedicated input-only pins, 40 N-ch open-drain outputs, and 3 5-V tolerant pins. The exposed die pad is recommended to be connected to VSS for thermal and electrical stability.

How many analog-to-digital converter (ADC) channels does the R7FA2E1A93CFK#AA0 support?

The R7FA2E1A93CFK#AA0 integrates a 12-bit successive approximation ADC (ADC12) with up to 13 selectable analog input channels. Inputs include dedicated pins (AN000–AN010, AN017–AN022), internal temperature sensor output, and internal reference voltage. The ADC supports hardware-triggered conversions via AGT or GPT timers, and its conversion results can be automatically transferred via DTC to reduce CPU load.