Renesas R7FA2E2A53CNJ#AA1

Overview

R7FA2E2A53CNJ#AA1 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 32-KB code flash memory, 8-KB SRAM with parity, 12-bit ADC and DAC, integrated CAN interface, and hardware security including AES-128/256 and TRNG - deployed in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R7FA2E2A53CNJ#AA1 datasheet, R7FA2E2A53CNJ#AA1 pinout, R7FA2E2A53CNJ#AA1 application, or R7FA2E2A53CNJ#AA1 equivalent, key selection criteria include its 20-pin HWQFN package (4 mm × 4 mm), -40°C to +105°C industrial temperature grade, 1.6–5.5 V wide supply range, dual watchdog timers (WDT/IWDT), and Event Link Controller (ELC) for CPU-free peripheral coordination.

Technical Context

The R7FA2E2A53CNJ#AA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling secure partitioning of firmware and data. Its clock system integrates HOCO (up to 48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-dedicated 15-kHz oscillator with trim capability for precision timing across voltage and temperature.

Peripheral integration includes one SCI supporting UART, SPI, I²C, and smart card modes; one dedicated I³C bus interface compliant with MIPI I³C subsets; one SPI channel; and analog subsystems comprising ADC12 (8-channel, 12-bit SAR), DAC12, on-die temperature sensor (TSN), and low-power analog comparators (ACMPLP). Safety features include ECC/parity on SRAM, CAC for clock accuracy monitoring, CRC calculator, DOC, and register write protection.

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad (recommended connected to VSS or left open).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A53CNJ#AA1, the R7FA2E1A53CNJ#AA0 offers lower memory and no CAN - making it a budget alternative for simpler edge nodes; the R7FA4M2AD3CFM#AA0 delivers higher compute and USB but requires PCB redesign and consumes more power - best reserved for feature-rich host applications.

Availability

R7FA2E2A53CNJ#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, motor control edge devices, and medical wearable monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA2E2A53CNJ#AA1 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA2E2 group targets ultra-low-power, cost-optimized embedded applications - designed specifically for battery-operated sensors, smart meters, and portable medical devices where energy efficiency, security, and small footprint are critical.

FAQ

What is the maximum operating frequency of the R7FA2E2A53CNJ#AA1?

The R7FA2E2A53CNJ#AA1 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achieved with the High-Speed On-Chip Oscillator (HOCO) configured at 48 MHz, and the device maintains full functionality across its entire 1.6–5.5 V supply range and -40°C to +105°C temperature grade. The R7FA2E2A53CNJ#AA1 supports dynamic clock scaling to reduce power during idle periods without compromising real-time responsiveness.

Does the R7FA2E2A53CNJ#AA1 support CAN communication?

Yes, the R7FA2E2A53CNJ#AA1 integrates a full-featured CAN module compliant with ISO 11898-1 (CAN 2.0B). It supports bit rates up to 1 Mbps, message filtering, FIFO buffering, and loopback self-test mode - enabling direct connection to industrial fieldbus networks and automotive diagnostic interfaces without external transceivers. The R7FA2E2A53CNJ#AA1's CAN peripheral is accessible on dedicated pins P111 and P112 in its 20-pin HWQFN package.

What analog peripherals are included in the R7FA2E2A53CNJ#AA1?

The R7FA2E2A53CNJ#AA1 includes a 12-bit successive approximation ADC12 with up to 8 input channels, a 12-bit DAC12, an on-die temperature sensor (TSN), and two independent low-power analog comparators (ACMPLP0/1). These peripherals share common analog power rails (VCC0/VSS0) and reference pins (VREFH0/VREFL0), allowing simultaneous high-precision acquisition and analog output generation - essential for closed-loop control and sensor calibration in the R7FA2E2A53CNJ#AA1.

What is the package type and pin count of the R7FA2E2A53CNJ#AA1?

The R7FA2E2A53CNJ#AA1 uses a 20-pin HWQFN package measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed die pad. This compact, thermally efficient package supports reflow soldering and is rated for industrial temperature operation (-40°C to +105°C). Pin assignments are documented in Figure 1.4 and Table 1.14 of the R01DS0387EJ0150 datasheet, and the R7FA2E2A53CNJ#AA1 shares pin compatibility with other RA2E2 variants in the same 20-pin configuration.

How does the R7FA2E2A53CNJ#AA1 support functional safety compliance?

The R7FA2E2A53CNJ#AA1 incorporates multiple hardware safety mechanisms: SRAM parity error detection, Flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT), illegal memory access detection, and GPIO readback level verification. These features collectively support IEC 61508 SIL2 and ISO 13849 PLd design requirements - enabling certified safety functions without external monitoring circuitry in the R7FA2E2A53CNJ#AA1.