Renesas R7FA4M3AE2CBM#BC0

Overview

R7FA4M3AE2CBM from Renesas Electronics is a 32-bit Arm Cortex-M33 microcontroller operating at up to 100 MHz, featuring 768 KB code flash, 8 KB data flash, and 128 KB SRAM with ECC/parity support. It integrates USB 2.0 Full-Speed, SDHI, Quad SPI, dual CAN, dual 12-bit ADCs (5 Msps interleaved), dual 12-bit DACs, CTSU, RTC with VBATT backup, and Secure Crypto Engine 9 with AES/RSA/ECC/SHA256 - deployed in industrial HMI, secure IoT gateways, and motor control systems.

For engineers reviewing the R7FA4M3AE2CBM datasheet, R7FA4M3AE2CBM pinout, R7FA4M3AE2CBM application, or R7FA4M3AE2CBM equivalent, key selection considerations include its 144-pin BGA package (PLBG0144KB-A), -40°C to +85°C temperature grade, TrustZone-enabled secure boot, QSPI interface for external XIP flash, and dual CAN 2.0B support for automotive body electronics and industrial fieldbus nodes.

Technical Context

The R7FA4M3AE2CBM implements Armv8-M with TrustZone, enabling hardware-isolated secure and non-secure execution environments. Its memory subsystem includes 768 KB code flash with background SWAP operation, 8 KB data flash rated for 100,000 P/E cycles, and 128 KB SRAM with configurable parity or ECC protection.

Peripherals are orchestrated via Event Link Controller (ELC) for CPU-free inter-module triggering, supported by 8-channel DMAC and DTC for autonomous data movement. Security is enforced through SCE9 crypto accelerators, tamper-detect pins, and lifecycle management - all coordinated under TrustZone's memory and peripheral attribution model.

Key Specifications

Pinout & Package

Package: 144-pin Fine-Pitch Ball Grid Array (FBGA), PLBG0144KB-A footprint (7 mm × 7 mm, 0.50 mm pitch), RoHS-compliant Sn terminal finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Arm Cortex-M33 microcontroller applications.

Compared with R7FA4M3AE2CBM, R7FA4M3AF3CBM offers higher flash density and extended temperature range in identical packaging, while R7FA6M3AH3CFB adds Ethernet and performance headroom at the cost of larger footprint and different package - making R7FA4M3AE2CBM optimal for cost-sensitive, thermally constrained embedded control with balanced peripheral integration.

Availability

R7FA4M3AE2CBM is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, and BLDC motor control applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R7FA4M3AE2CBM 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power solutions for industrial, automotive, and enterprise markets.

The RA4M3 Group targets mid-range embedded applications demanding security, connectivity, and analog integration - designed specifically for industrial automation, IoT edge nodes, and human-machine interfaces where TrustZone, SCE9, and rich peripheral sets reduce system-level design effort.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4M3AE2CBM?

The R7FA4M3AE2CBM features an Arm Cortex-M33 core operating at a maximum frequency of 100 MHz. It implements the Armv8-M architecture with the Security Extension (TrustZone), including separate Secure and Non-secure Memory Protection Units (MPU_S and MPU_NS), each supporting eight memory regions. The core also integrates CoreSight ETM-M33 for instruction trace and dual SysTick timers - one for each security state - driven by either LOCO or the system clock.

Does the R7FA4M3AE2CBM support secure firmware updates and cryptographic acceleration?

Yes, the R7FA4M3AE2CBM integrates the Secure Crypto Engine 9 (SCE9) with hardware-accelerated AES-128/256, RSA-2048/3072, ECC-P256/P384, and SHA224/256. Combined with Arm TrustZone, it enables secure boot, encrypted firmware updates, and key management with tamper detection. The SCE9 offloads crypto operations from the CPU, and the 128-bit unique ID supports device authentication - all essential for implementing FIPS 140-2 Level 1 or IEC 62443-3-3 SL2 compliance in the R7FA4M3AE2CBM.

What are the memory resources available on the R7FA4M3AE2CBM?

The R7FA4M3AE2CBM provides 768 KB of on-chip code flash memory with background SWAP operation for seamless firmware updates, 8 KB of data flash memory rated for 100,000 program/erase cycles, and 128 KB of SRAM with selectable parity or Error Correction Code (ECC) protection. Additionally, it includes 1 KB of standby SRAM powered by VBATT, and option-setting memory that defines reset behavior - all accessible via the MCU's unified memory map and managed under TrustZone security attribution.

Which communication interfaces does the R7FA4M3AE2CBM support for industrial connectivity?

The R7FA4M3AE2CBM supports multiple industrial-grade interfaces: dual CAN 2.0B controllers (requiring external transceivers), USB 2.0 Full-Speed (host/device), SD/MMC Host Interface (SD/SDHC/SDXC compliant), Quad SPI (XIP-capable), six Serial Communications Interfaces (SCI) with UART/SPI/IIC/Manchester modes, two I2C buses, one SPI channel, and Serial Sound Interface Enhanced (SSIE) for audio. These enable robust fieldbus integration, removable media logging, and high-bandwidth peripheral expansion in the R7FA4M3AE2CBM.

What analog and timing peripherals are integrated into the R7FA4M3AE2CBM?

The R7FA4M3AE2CBM integrates two 12-bit ADC units (ADC12) capable of 5 Msps interleaved sampling across 19 total input channels, two 12-bit DAC outputs (DAC12), an on-die temperature sensor (TSN), and a Realtime Clock (RTC) with calendar support (2000–2099) and VBATT backup. Timing resources include four 32-bit General PWM Timers (GPT32), four 16-bit GPT16 units, six Low Power Asynchronous General Purpose Timers (AGT), plus WDT and IWDT - all synchronized via the Event Link Controller (ELC) for deterministic, CPU-free operation in the R7FA4M3AE2CBM.