Renesas R7FA2E1A73CFJ#AA0

Overview

R7FA2E1A73CFJ#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 touch sensing (CTSU2), and integrated security (AES128/256, TRNG). It targets battery-powered HMI, sensor nodes, and industrial control where low power, compact size, and secure firmware execution are critical.

For engineers reviewing the R7FA2E1A73CFJ#AA0 datasheet, R7FA2E1A73CFJ#AA0 pinout, R7FA2E1A73CFJ#AA0 application, or R7FA2E1A73CFJ#AA0 equivalent, this page delivers verified specifications, package mapping to 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), functional pin roles, real-world use cases, and validated alternative options for design-in decisions.

Technical Context

The R7FA2E1A73CFJ#AA0 implements the Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ debug support (SW-DP, MTB-M23). Its system-level timing relies on multiple clock sources including HOCO (48 MHz), SOSC (32.768 kHz), and LOCO, coordinated via the Event Link Controller (ELC) for CPU-free peripheral triggering.

It integrates safety mechanisms including SRAM parity checking, Flash area protection, ADC self-diagnosis, CAC for clock accuracy validation, and dual watchdogs (WDT + IWDT with dedicated 15-kHz oscillator). Security includes AES128/256 acceleration and True Random Number Generation for secure boot and key management.

Key Specifications

Pinout & Package

This device uses a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch) with exposed die pad recommended to be connected to VSS. Pin functions are defined per Renesas R01DS0386EJ0170 Rev.1.70.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A73CFJ#AA0, the R7FA2E1A72DFJ#AA0 offers identical functionality at lower thermal rating, while the STM32G031F8P6 sacrifices integrated HMI and safety capabilities for cost and footprint reduction-making the R7FA2E1A73CFJ#AA0 optimal for thermally demanding, touch-enabled, safety-aware edge nodes.

Availability

R7FA2E1A73CFJ#AA0 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial HMI panels, portable medical devices, energy monitoring modules, and battery-powered IoT gateways requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA2E1A73CFJ#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 leader in microcontrollers, analog, power, and SoC products, serving automotive, industrial, infrastructure, and IoT markets with high-reliability silicon solutions.

The RA2E1 group, including R7FA2E1A73CFJ#AA0, was designed specifically for cost-sensitive, ultra-low-power embedded applications requiring robust security, capacitive touch, and extended temperature operation without sacrificing Arm ecosystem compatibility.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E1A73CFJ#AA0?

The R7FA2E1A73CFJ#AA0 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. This core includes a Memory Protection Unit with 8 regions, single-cycle integer multiplier, and CoreSight™ debug infrastructure. The R7FA2E1A73CFJ#AA0 achieves deterministic real-time performance while supporting TrustZone-based secure firmware partitioning, making it suitable for applications requiring both efficiency and isolation.

Which package type and pin count does the R7FA2E1A73CFJ#AA0 use?

The R7FA2E1A73CFJ#AA0 is packaged in a 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) with dual VCC/VSS pins and an exposed die pad recommended for connection to VSS. This package maps to PLQP0032GB-A/PLQP0032GE-A per Renesas part numbering, and supports 23 general-purpose I/O pins, including 5-V-tolerant and open-drain configurations. The R7FA2E1A73CFJ#AA0 pinout is fully documented in Figure 1.7 and Table 1.14 of R01DS0386EJ0170 Rev.1.70.

Does the R7FA2E1A73CFJ#AA0 include hardware security features, and what are they?

Yes, the R7FA2E1A73CFJ#AA0 integrates dedicated hardware security blocks including AES128 and AES256 encryption/decryption accelerators and a True Random Number Generator (TRNG). These features enable secure boot, encrypted firmware updates, and cryptographic key generation without software-based entropy bottlenecks. The R7FA2E1A73CFJ#AA0 also supports register write protection, Flash area locking, and memory access monitoring to prevent unauthorized code execution or data tampering.

What analog and human-machine interface peripherals are integrated into the R7FA2E1A73CFJ#AA0?

The R7FA2E1A73CFJ#AA0 integrates a 12-bit successive-approximation ADC (ADC12) with up to 11 input channels, two low-power analog comparators (ACMPLP), an on-die temperature sensor (TSN), and the Capacitive Sensing Unit version 2 (CTSU2) supporting up to 11 touch pins. These peripherals enable direct sensor interfacing, threshold-based event detection, thermal compensation, and robust touch-button/slider implementation-all without external signal conditioning. The R7FA2E1A73CFJ#AA0 leverages these for HMI, environmental monitoring, and safety-critical feedback loops.

What is the operating temperature range and supply voltage specification for the R7FA2E1A73CFJ#AA0?

The R7FA2E1A73CFJ#AA0 is rated for operation from -40°C to +105°C and supports a wide VCC supply range of 1.6 V to 5.5 V. This extended temperature grade (industrial 'C' grade with '3' suffix) makes it suitable for deployment in harsh environments such as factory automation, outdoor metering, and under-hood automotive subsystems. The R7FA2E1A73CFJ#AA0 includes three independent Low Voltage Detection (LVD) circuits (LVD0–LVD2) with configurable thresholds to ensure safe brown-out response across the full voltage range.