Renesas R7FA2E2A53CNK#AA1

Overview

R7FA2E2A53CNK#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, 8 KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and hardware security (AES128/256 + TRNG). It targets battery-powered industrial sensors, smart metering endpoints, and low-cost IoT edge nodes requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A53CNK#AA1 datasheet, R7FA2E2A53CNK#AA1 pinout, R7FA2E2A53CNK#AA1 application, or R7FA2E2A53CNK#AA1 equivalent, key selection criteria include its -40°C to +105°C industrial temperature rating, 24-pin HWQFN (4 mm × 4 mm) package with 19 GPIOs, dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and I3C/SPI/SCI peripheral set optimized for deterministic real-time control in constrained environments.

Technical Context

The R7FA2E2A53CNK#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/MOCO/LOCO oscillators with trim capability and a dedicated IWDT oscillator, allowing precise low-power timing across voltage and temperature ranges.

Peripheral integration centers on event-driven autonomy: the Event Link Controller (ELC) enables direct hardware-to-hardware triggering between modules (e.g., ADC conversion start → DTC transfer → GPT PWM update), while the Data Transfer Controller (DTC) offloads CPU for memory-mapped peripheral data movement without interrupt latency.

Key Specifications

Pinout & Package

Package: 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), RoHS-compliant Sn finish, exposed die pad recommended connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A52DNK#AA1, the R7FA2E2A53CNK#AA1 adds extended temperature support critical for outdoor or enclosed industrial deployments; versus R7FA2E2A53CNJ#AA1, it provides four additional GPIOs and full peripheral signal availability-enabling more complex sensor fusion or multi-interface gateways without pin contention.

Availability

R7FA2E2A53CNK#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and BLDC motor control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA2E2A53CNK#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RA2E2 Group is designed for ultra-low-power, cost-sensitive industrial and consumer edge devices, emphasizing security, functional safety, and seamless scalability within the Renesas RA ecosystem.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A53CNK#AA1?

The R7FA2E2A53CNK#AA1 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 single-cycle integer multiplier, 19-cycle divider, and an 8-region Memory Protection Unit (MPU) for secure memory partitioning. The R7FA2E2A53CNK#AA1 uses this architecture to deliver deterministic real-time performance while maintaining ultra-low power consumption in battery-operated applications.

Does the R7FA2E2A53CNK#AA1 support hardware-based security features?

Yes, the R7FA2E2A53CNK#AA1 integrates AES128/256 encryption acceleration and a True Random Number Generator (TRNG) in hardware. These features enable secure boot, encrypted firmware updates, and authenticated communication without burdening the CPU. The R7FA2E2A53CNK#AA1 also supports secure key storage and runtime integrity checks via its hardware security module, meeting foundational requirements for IEC 62443-3-3 compliance in industrial IoT deployments.

What analog peripherals are included in the R7FA2E2A53CNK#AA1?

The R7FA2E2A53CNK#AA1 includes a 12-bit successive approximation ADC (ADC12) with up to 8 input channels, a 12-bit DAC (DAC12), an on-die temperature sensor (TSN), and two low-power analog comparators (ACMPLP0/1). The ADC supports internal reference voltage and temperature sensor inputs, while the DAC provides precise analog output for calibration or actuator control. All analog blocks share dedicated power rails (VREFH0/VREFL0) to ensure noise isolation from digital switching.

Which communication interfaces does the R7FA2E2A53CNK#AA1 support?

The R7FA2E2A53CNK#AA1 supports CAN 2.0B, I3C, SPI, and Serial Communications Interface (SCI) with UART, I²C, SPI, and Smart Card modes. SCI9 provides asynchronous and synchronous serial functionality, while the dedicated I3C interface enables high-speed, low-pin-count sensor hub connectivity. The CAN module supports standard and extended frame formats with programmable bit timing, making the R7FA2E2A53CNK#AA1 suitable for industrial fieldbus and automotive subsystem applications.

What is the operating temperature range and package type of the R7FA2E2A53CNK#AA1?

The R7FA2E2A53CNK#AA1 is qualified for operation from -40°C to +105°C and housed in a 24-pin HWQFN package measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed thermal pad. This package supports reflow soldering and provides robust thermal performance for enclosed industrial enclosures. The R7FA2E2A53CNK#AA1's extended temperature rating ensures reliable operation in demanding environments such as factory floors, utility substations, and outdoor metering installations.