Renesas R7FA2E2A33CNJ#AA1

Overview

R7FA2E2A33CNJ#AA1 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 (AES128/256, TRNG). It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A33CNJ#AA1 datasheet, R7FA2E2A33CNJ#AA1 pinout, R7FA2E2A33CNJ#AA1 application, or R7FA2E2A33CNJ#AA1 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +105°C industrial temperature grade, 1.6–5.5 V wide supply range, dual watchdog timers (WDT/IWDT), and ELC/DTC-based low-power peripheral triggering - all confirmed in Rev. 1.50 of datasheet R01DS0387EJ0150.

Technical Context

The R7FA2E2A33CNJ#AA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions and CoreSight™ MTB-M23 trace. Its system-level timing relies on multiple independent clock sources: HOCO (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-dedicated 15 kHz oscillator, all with trim capability.

Peripheral coordination uses Event Link Controller (ELC) to route signals (e.g., ADC conversion completion → DTC transfer) without CPU intervention, while Data Transfer Controller (DTC) handles memory-to-peripheral transfers triggered by interrupts. Safety is enforced via SRAM ECC, flash area protection, CAC for clock accuracy validation, and register write protection (PRCR).

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended to connect to VSS or left open. Pin count matches R7FA2E2A33CNJ#AA1's 15 general-purpose I/Os, 2 5-V-tolerant pins (P400/P401), and dedicated debug (SWDIO/SWCLK), reset (RES), and mode (MD) signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E2A33CNJ#AA1, R7FA2E2A32DNJ#AA0 trades industrial temperature and safety features for lower cost, while R7FA2E1A33CNJ#AA0 removes CAN/I3C/DAC to reduce complexity and price - both require careful validation of peripheral dependencies in existing firmware.

Availability

R7FA2E2A33CNJ#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, motor control edge devices, and building automation controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA2E2A33CNJ#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The RA2E2 group delivers ultra-low-power, cost-optimized Arm Cortex-M23 MCUs targeting battery-operated industrial and consumer edge devices with integrated security and functional safety features.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A33CNJ#AA1?

The R7FA2E2A33CNJ#AA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. This enables deterministic real-time performance while maintaining energy efficiency. The core includes an 8-region Memory Protection Unit (MPU), SysTick timer, and CoreSight™ MTB-M23 trace - all confirmed in the R01DS0387EJ0150 datasheet Rev. 1.50. The R7FA2E2A33CNJ#AA1 achieves this speed across its full industrial temperature range (-40°C to +105°C).

Does the R7FA2E2A33CNJ#AA1 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A33CNJ#AA1 integrates a CAN module compliant with ISO 11898-1:2015 (CAN 2.0B), supporting both standard and extended frame formats with bit rates up to 1 Mbps. It includes message objects, FIFO buffering, and error confinement logic. This capability is explicitly documented in Section 1.7 of the R01DS0387EJ0150 datasheet. The R7FA2E2A33CNJ#AA1 uses this CAN interface for robust fieldbus communication in industrial sensor and metering applications.

What are the memory resources available on the R7FA2E2A33CNJ#AA1?

The R7FA2E2A33CNJ#AA1 provides 16 KB of code flash memory, 2 KB of data flash memory (rated for 100,000 program/erase cycles), and 8 KB of on-chip SRAM with ECC protection. The code flash supports secure boot and read-out protection; data flash enables reliable parameter storage. These values are fixed for the "3" flash size variant per the RA2E2 part numbering scheme in Figure 1.2 of R01DS0387EJ0150. All memory blocks are accessible via the R7FA2E2A33CNJ#AA1's unified memory map.

Which package type and pin count does the R7FA2E2A33CNJ#AA1 use?

The R7FA2E2A33CNJ#AA1 uses a 20-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad, as indicated by the "NJ" suffix in its part number and confirmed in Table 1.11 of R01DS0387EJ0150. It provides 15 general-purpose I/O pins, two 5-V-tolerant pins (P400/P401), and dedicated debug, reset, and clock signals. This compact footprint supports high-density PCB layouts in space-constrained industrial modules.

What hardware security features are integrated into the R7FA2E2A33CNJ#AA1?

The R7FA2E2A33CNJ#AA1 includes AES128/256 encryption acceleration, a True Random Number Generator (TRNG), flash area protection, SRAM ECC, and register write protection (PRCR). These features enable secure boot, encrypted firmware updates, and TLS stack acceleration. They are documented in Sections 1.1 and 1.7 of R01DS0387EJ0150. The R7FA2E2A33CNJ#AA1 leverages these capabilities to meet baseline requirements for secure IoT endpoint authentication and data confidentiality.