Renesas R7FA2E2A33CNK#BA1

Overview

R7FA2E2A33CNK#BA1 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 16 KB code flash, 8 KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and hardware security including AES-128/256 and TRNG. It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A33CNK#BA1 datasheet, R7FA2E2A33CNK#BA1 pinout, R7FA2E2A33CNK#BA1 application, or R7FA2E2A33CNK#BA1 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 communication flexibility for edge-node connectivity.

Technical Context

The R7FA2E2A33CNK#BA1 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 IWDT-dedicated 15 kHz oscillator with trim capability for precision timing across voltage and temperature.

Peripheral integration includes a 12-bit ADC12 with 4 selectable input channels, two AGTW timers for low-power event counting, six GPT16 channels supporting 12 PWM outputs, and a dedicated Event Link Controller (ELC) that enables autonomous peripheral-to-peripheral triggering without CPU intervention-critical for deterministic real-time response in sensor fusion applications.

Key Specifications

Pinout & Package

Package: 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended to connect to VSS. Operating temperature range: -40°C to +105°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A33CNK#BA1, the RA2E1 alternative sacrifices CAN/I3C and DAC for lower unit cost, while the STM32G071 offers more flash but omits ECC, CAC, and industrial temperature support-making R7FA2E2A33CNK#BA1 optimal for safety-aware, fieldbus-connected industrial edge devices.

Availability

R7FA2E2A33CNK#BA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, BLDC motor controllers, and factory automation I/O terminals requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA2E2A33CNK#BA1 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 is designed for ultra-low-power, cost-sensitive industrial and consumer edge applications-emphasizing security, functional safety, and seamless scalability within the RA family architecture.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A33CNK#BA1?

The R7FA2E2A33CNK#BA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. This core delivers efficient 32-bit processing with TrustZone-enabled security extensions, making it suitable for applications requiring both performance and hardware-enforced isolation between trusted and untrusted code domains. The R7FA2E2A33CNK#BA1 achieves this speed while maintaining ultra-low active and sleep-mode power consumption.

Does the R7FA2E2A33CNK#BA1 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A33CNK#BA1 integrates a CAN 2.0B-compliant controller supporting both standard and extended frame formats with programmable bit rates up to 1 Mbps. It includes message objects, FIFO buffering, and error counters-enabling robust fieldbus connectivity in industrial automation and building management systems. The R7FA2E2A33CNK#BA1 does not support CAN FD; its implementation is strictly CAN 2.0B.

What are the memory resources available on the R7FA2E2A33CNK#BA1?

The R7FA2E2A33CNK#BA1 provides 16 KB of code flash memory (rated for 100,000 program/erase cycles), 2 KB of data flash memory, and 8 KB of on-chip SRAM with optional ECC or parity protection. These resources support secure firmware updates, parameter storage with wear leveling, and real-time data buffering-all within a single-chip solution. The R7FA2E2A33CNK#BA1 uses these memory blocks in conjunction with MPU regions to enforce strict access control across application partitions.

Which package type and pin count does the R7FA2E2A33CNK#BA1 use?

The R7FA2E2A33CNK#BA1 is housed in a 24-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 operation from -40°C to +105°C. The R7FA2E2A33CNK#BA1 exposes 19 general-purpose I/O pins-including two 5V-tolerant inputs (P400/P401)-making it ideal for space-constrained industrial control modules.

What hardware security features are integrated into the R7FA2E2A33CNK#BA1?

The R7FA2E2A33CNK#BA1 includes AES-128/256 encryption acceleration, a True Random Number Generator (TRNG), register write protection, memory protection unit (MPU), and secure boot support. These features collectively enable secure firmware authentication, encrypted data-at-rest, and resistance to side-channel attacks. The R7FA2E2A33CNK#BA1 leverages these capabilities to meet foundational requirements for PSA Certified Level 2 and IEC 62443-3-3 compliance in edge device deployments.