Renesas R7FA2E3052DFJ#HA0

Overview

R7FA2E3052DFJ#HA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 32-KB code flash, 16-KB SRAM, a 12-bit ADC with 10 input channels, and integrated safety functions including SRAM parity, flash protection, and CAC-based clock accuracy monitoring - deployed in industrial sensor nodes and battery-powered HMI interfaces.

For engineers reviewing the R7FA2E3052DFJ#HA0 datasheet, R7FA2E3052DFJ#HA0 pinout, R7FA2E3052DFJ#HA0 application, or R7FA2E3052DFJ#HA0 equivalent, key selection criteria include its 32-pin LQFP package, -40°C to +85°C industrial temperature grade, 1.6–5.5 V wide supply range, dual watchdog timers (WDT/IWDT), and hardware-accelerated CRC/DOC for functional safety compliance.

Technical Context

The R7FA2E3052DFJ#HA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling secure partitioning of firmware and data. Its system-level safety features include independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, Clock Frequency Accuracy Measurement Circuit (CAC), and register write protection via PRCR.

It integrates four serial interfaces: three SCI modules (UART/SPI/I²C-compatible), one dedicated I²C bus interface, and one SPI channel - all supported by Event Link Controller (ELC) for CPU-free peripheral coordination. The analog subsystem includes a temperature sensor (TSN) routed to ADC12 and configurable reference voltage inputs (VREFH0/VREFL0).

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant Sn (tin) terminal finish, exposed die pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E3052DFJ#HA0, R7FA2E3053CFJ offers extended temperature and double flash capacity for future-proofing, while R7FA2E2052DFJ trades safety features for lower unit cost - making the R7FA2E3052DFJ#HA0 optimal for industrial edge devices requiring certified diagnostics within standard temperature range.

Availability

R7FA2E3052DFJ#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat HMIs, PLC I/O modules, and asset tracking beacons requiring stable component supply across production lifecycles.

Supply support for R7FA2E3052DFJ#HA0 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA2E3 group targets cost-sensitive, ultra-low-power embedded applications demanding functional safety - designed to deliver Arm Cortex-M23 performance with integrated diagnostics in compact LQFP/QFN packages.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E3052DFJ#HA0?

The R7FA2E3052DFJ#HA0 uses 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 19-cycle divider - delivering deterministic real-time performance with hardware-enforced memory isolation critical for secure firmware execution in the R7FA2E3052DFJ#HA0.

Does the R7FA2E3052DFJ#HA0 support hardware-based functional safety features?

Yes, the R7FA2E3052DFJ#HA0 integrates multiple hardware safety mechanisms: SRAM parity error detection, flash area protection, Clock Frequency Accuracy Measurement Circuit (CAC), Cyclic Redundancy Check (CRC) calculator, Data Operation Circuit (DOC), Independent Watchdog Timer (IWDT) with dedicated oscillator, and register write protection. These features collectively support foundational compliance with IEC 61508 SIL2 and ISO 26262 ASIL-B requirements in the R7FA2E3052DFJ#HA0.

What are the analog capabilities of the R7FA2E3052DFJ#HA0, and how many ADC input channels does it support?

The R7FA2E3052DFJ#HA0 includes a 12-bit successive-approximation ADC (ADC12) with 10 selectable analog input channels (AN000–AN002, AN005–AN010), plus an on-die temperature sensor (TSN) routed to the ADC. It supports external reference voltages via VREFH0/VREFL0 and internal reference selection - enabling high-accuracy sensor measurements with ±1 LSB INL specification across its full operating range in the R7FA2E3052DFJ#HA0.

Which communication interfaces are available on the R7FA2E3052DFJ#HA0, and how are they allocated across its 32-pin LQFP package?

The R7FA2E3052DFJ#HA0 provides three SCI modules (supporting UART, SPI, and I²C modes), one dedicated I²C bus interface (IIC), and one SPI channel. In the 32-pin LQFP package, these are mapped to P100–P104 (SCI0), P108–P112 (SCI1/IIC), and P300–P302/P407–P409 (SPI/SCI2) - with ELC enabling cross-peripheral triggering without CPU overhead, ensuring efficient protocol handling in the R7FA2E3052DFJ#HA0.

What is the operating voltage range and temperature grade of the R7FA2E3052DFJ#HA0, and which pins are 5-V tolerant?

The R7FA2E3052DFJ#HA0 operates from 1.6 V to 5.5 V over an industrial temperature range of -40°C to +85°C. Three pins - P400, P401, and P407 - are explicitly specified as 5-V tolerant in the datasheet, allowing direct interfacing with legacy 5-V logic or sensors without external level-shifting circuitry - a key design enabler for retrofit industrial applications using the R7FA2E3052DFJ#HA0.