Renesas R7FA2E3053CNH#BA0

Overview

R7FA2E3053CNH#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 battery-powered industrial sensors and smart metering endpoints requiring functional safety compliance.

For engineers reviewing the R7FA2E3053CNH#BA0 datasheet, R7FA2E3053CNH#BA0 pinout, R7FA2E3053CNH#BA0 application, or R7FA2E3053CNH#BA0 equivalent, key selection criteria include its 32-pin HWQFN (5 mm × 5 mm) package, -40°C to +105°C industrial temperature grade, 1.6–5.5 V wide supply range, and support for SCI × 3, I²C × 1, SPI × 1, AGT × 2, GPT16 × 6, and RTC with calendar mode.

Technical Context

The R7FA2E3053CNH#BA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling secure partitioning of firmware and data. Its clock system integrates HOCO (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and SOSC, with Clock Frequency Accuracy Measurement Circuit (CAC) for real-time oscillator calibration.

Safety-critical operation is enabled by independent watchdog timer (IWDT) with dedicated 15-kHz oscillator, SRAM parity error detection, flash area protection, ADC self-diagnosis, and Data Operation Circuit (DOC) for 16-bit arithmetic validation - all aligned with IEC 61508 SIL2 and ISO 26262 ASIL-B readiness.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E3053CNH#BA0, the R7FA2E3053CFL#AA0 offers identical functionality in a larger, more serviceable package, while R7FA2E3073CNH#BA0 provides double the flash capacity without layout changes - making it ideal for scalable product families where memory headroom is prioritized.

Availability

R7FA2E3053CNH#BA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, and building automation controllers requiring stable component supply across extended product lifecycles.

Supply support for R7FA2E3053CNH#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, power, and SoC solutions for industrial, automotive, and IoT markets.

The RA2E3 group is designed specifically for cost-sensitive, ultra-low-power embedded applications demanding functional safety features and seamless scalability within the Renesas RA ecosystem.

FAQ

What is the maximum operating frequency of the R7FA2E3053CNH#BA0?

The R7FA2E3053CNH#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 sources, and is fully supported across its entire industrial temperature range (-40°C to +105°C). The R7FA2E3053CNH#BA0 maintains timing compliance under worst-case voltage (1.6 V) and temperature conditions per its datasheet specifications.

Does the R7FA2E3053CNH#BA0 support hardware-based functional safety features?

Yes, the R7FA2E3053CNH#BA0 integrates multiple hardware safety mechanisms including SRAM parity checking, independent watchdog timer (IWDT) with dedicated oscillator, Clock Frequency Accuracy Measurement Circuit (CAC), cyclic redundancy check (CRC) calculator, data operation circuit (DOC), and register write protection. These features collectively support diagnostic coverage required for IEC 61508 SIL2 and ISO 26262 ASIL-B development workflows. The R7FA2E3053CNH#BA0 is explicitly documented in Renesas' functional safety manuals for this purpose.

How many analog input channels does the R7FA2E3053CNH#BA0 ADC support?

The R7FA2E3053CNH#BA0 integrates a 12-bit successive approximation ADC (ADC12) with support for 10 analog input channels: AN000, AN001, AN002, AN005, AN006, AN007, AN008, AN009, AN010, and AN020–AN022 (though AN020–AN022 are multiplexed with other functions on 32-pin packages). This count reflects the subset available in the 32-pin HWQFN variant, as confirmed in Table 1.12 and Pin List Table 1.14 of the R01DS0411EJ0130 datasheet. The R7FA2E3053CNH#BA0 also supports internal temperature sensor and reference voltage inputs.

What communication interfaces are available on the R7FA2E3053CNH#BA0?

The R7FA2E3053CNH#BA0 provides SCI × 3 (supporting UART, simple I²C, simple SPI, and smart card modes), one dedicated I²C bus interface (IIC), and one Serial Peripheral Interface (SPI). Unlike higher-pin-count variants, it omits the fourth SCI channel. All interfaces are fully functional in the 32-pin HWQFN package, with pin assignments verified in Figure 1.4 and Table 1.14 of the datasheet. The R7FA2E3053CNH#BA0 does not include CAN or USB peripherals.

What is the operating temperature range and package type of the R7FA2E3053CNH#BA0?

The R7FA2E3053CNH#BA0 is rated for industrial operation from -40°C to +105°C and is supplied in a 32-pin HWQFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad (package code NH). This matches the part numbering scheme in Figure 1.2 and is confirmed in Table 1.11 of the R01DS0411EJ0130 datasheet. The R7FA2E3053CNH#BA0's thermal pad must be soldered to a non-electrical PCB copper area for optimal thermal performance and mechanical reliability.