Renesas R7FA2E3052DNH#BA0

Overview

R7FA2E3052DNH#BA0 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, 12-bit ADC with 10 input channels, and integrated safety functions including SRAM parity, CAC, CRC, and IWDT. It targets cost-sensitive industrial sensor nodes and battery-powered HMI devices requiring functional safety support.

For engineers reviewing the R7FA2E3052DNH#BA0 datasheet, R7FA2E3052DNH#BA0 pinout, R7FA2E3052DNH#BA0 application, or R7FA2E3052DNH#BA0 equivalent, key selection criteria include its 32-pin HWQFN package (5 mm × 5 mm), -40°C to +85°C industrial temperature grade, 1.6–5.5 V wide supply range, and verified support for SCI × 3, I²C × 1, SPI × 1, RTC, AGT × 2, and GPT16 × 6.

Technical Context

The R7FA2E3052DNH#BA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling secure partitioning of firmware and data. Its debug interface uses SW-DP with CoreSight MTB-M23 trace, and system-level reliability is enhanced by independent watchdog timer (IWDT) with dedicated 15 kHz oscillator and Clock Frequency Accuracy Measurement Circuit (CAC) for real-time clock validation.

Power management includes multiple low-power modes, event-driven operation via Event Link Controller (ELC), and autonomous data transfers using Data Transfer Controller (DTC). Analog subsystem integrates a 12-bit successive-approximation ADC with internal temperature sensor (TSN) and selectable reference inputs, while timing resources comprise RTC, AGT × 2, and GPT16 × 6 - all accessible without CPU intervention via ELC routing.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad - optimized for compact industrial PCBs and thermal dissipation in sealed enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E3052DNH#BA0, R7FA2E3052DFJ trades thermal performance for assembly flexibility, while R7FA2E3072DNH offers seamless flash scalability without layout change - both retain identical safety features, clocking, and I/O behavior.

Availability

R7FA2E3052DNH#BA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat HMIs, asset tracking beacons, and programmable logic controller I/O modules requiring stable component supply across multi-year production cycles.

Supply support for R7FA2E3052DNH#BA0 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, and power solutions for automotive, industrial, and IoT markets - delivering high-reliability silicon with integrated safety and security.

The RA2E3 Group targets cost-optimized, ultra-low-power industrial and consumer applications requiring functional safety compliance, long battery life, and minimal external components - designed for rapid time-to-market in resource-constrained edge devices.

FAQ

What is the maximum operating frequency of the R7FA2E3052DNH#BA0?

The R7FA2E3052DNH#BA0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal (1–20 MHz) multiplied via PLL. The MCU maintains full peripheral functionality-including ADC, timers, and communication interfaces-at this frequency, validated across the full -40°C to +85°C temperature range.

Does the R7FA2E3052DNH#BA0 support hardware-based functional safety features?

Yes, the R7FA2E3052DNH#BA0 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), and illegal memory access detection. These features collectively support development toward IEC 61508 SIL2 and ISO 26262 ASIL-B compliance when implemented per Renesas Functional Safety Manual.

How many analog input channels does the ADC12 support on the R7FA2E3052DNH#BA0?

The R7FA2E3052DNH#BA0's 12-bit ADC12 supports 10 analog input channels: AN000, AN001, AN002, AN005, AN006, AN007, AN008, AN009, AN010, and AN020–AN022. This count reflects the 32-pin HWQFN variant (R7FA2E3052DNH#BA0); the 48-pin variants support up to 13 channels. All channels accept inputs from 0 V to AVCC0, with internal temperature sensor and reference voltage selectable as conversion sources.

What communication interfaces are available on the R7FA2E3052DNH#BA0?

The R7FA2E3052DNH#BA0 provides SCI × 3 (asynchronous UART, clock-synchronous, simple I²C, simple SPI, smart card), I²C bus interface × 1, and SPI × 1. Notably, it omits SCI channel 9 (present in 48-pin variants) and supports only three SCI instances due to pin count constraints in the 32-pin HWQFN package. All interfaces operate across the full 1.6–5.5 V supply range and support standard baud rates up to 4 Mbps (SPI) and 2 Mbps (SCI).

What is the operating temperature range and package type of the R7FA2E3052DNH#BA0?

The R7FA2E3052DNH#BA0 is rated for industrial operation from -40°C to +85°C and housed in a 32-pin HWQFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. This package enables compact PCB layouts and efficient heat dissipation in enclosed industrial enclosures. The 'D' in the part number denotes consumer-grade qualification, but the '2' suffix confirms its -40°C to +85°C temperature rating per Renesas datasheet R01DS0411EJ0130.