Renesas R7FA4M3AD2CBM#BC0

Overview

R7FA4M3AD2CBM from Renesas Electronics is a 32-bit Arm Cortex-M33 microcontroller operating at up to 100 MHz, featuring 512 KB code flash, 8 KB data flash, and 128 KB SRAM with parity/ECC. 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 support, and Secure Crypto Engine with AES/RSA/ECC/SHA256 - deployed in industrial HMI, secure gateway, and motor control applications.

For engineers reviewing the R7FA4M3AD2CBM datasheet, R7FA4M3AD2CBM pinout, R7FA4M3AD2CBM application, or R7FA4M3AD2CBM equivalent, key selection criteria include its -40°C to +85°C temperature grade, 144-pin BGA (7 mm × 7 mm, 0.50 mm pitch) package, TrustZone-enabled secure boot, dual CAN 2.0B compliance, and integrated QSPI controller for external XIP flash expansion.

Technical Context

The R7FA4M3AD2CBM implements Armv8-M architecture with TrustZone security extension (r0p4-00rel0), supporting secure/non-secure MPU regions (8+8), dual SysTick timers, and CoreSight ETM-M33 trace. Its memory subsystem includes background flash programming and SWAP operation for zero-downtime firmware updates.

Peripherals are orchestrated via Event Link Controller (ELC) for CPU-free inter-module triggering, Data Transfer Controller (DTC) for interrupt-driven transfers, and 8-channel DMAC. Security is enforced through SCE9 crypto accelerators, tamper detection on three dedicated pins, and lifecycle management with secure key storage.

Key Specifications

Pinout & Package

144-pin Fine-Pitch Ball Grid Array (FBGA), PLBG0144KB-A package (7 mm × 7 mm, 0.50 mm pitch), RoHS-compliant Sn (tin) terminal finish. Pin count: 109 I/O pins, 21 of which are 5-V tolerant; includes dedicated tamper inputs (TAMP0–TAMP2), USB DP/DM, QSPI IO0–IO3, CAN RX/TX pairs, and CTSU touch sensing channels.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M3AD2CBM, R7FA4M3AF2CBM provides double flash capacity for complex connectivity stacks, while R7FA4M3AD3CBM extends operational range to +105°C - both retain identical pinout, peripherals, and TrustZone configuration, enabling drop-in replacement with only flash or thermal validation needed.

Availability

R7FA4M3AD2CBM is available at Aetrix Electronics and suitable for industrial HMI, secure edge nodes, and BLDC motor control applications requiring stable component supply across multi-year production cycles.

Supply support for R7FA4M3AD2CBM 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 industrial, automotive, and IoT markets.

The RA4M3 Group targets secure, high-performance general-purpose MCUs for industrial automation and edge intelligence - designed with TrustZone, crypto acceleration, and rich analog/peripheral integration to replace legacy Cortex-M4/M7 designs without sacrificing security or footprint.

FAQ

What is the maximum operating frequency of the R7FA4M3AD2CBM?

The R7FA4M3AD2CBM operates at a maximum frequency of 100 MHz using its Arm Cortex-M33 core. This speed is achievable with the on-chip PLL driven by the main oscillator (8–24 MHz) or high-speed on-chip oscillator (HOCO). The core maintains full performance across its specified -40°C to +85°C operating temperature range without frequency throttling.

Does the R7FA4M3AD2CBM support USB host functionality?

Yes, the R7FA4M3AD2CBM includes a USB 2.0 Full-Speed module (USBFS) that supports both host and device modes. In host mode, it supports low-speed and full-speed devices; in device mode, it complies with USB 2.0 specification and provides up to 10 configurable pipes. The integrated transceiver eliminates the need for an external PHY.

How many analog-to-digital converter channels does the R7FA4M3AD2CBM provide?

The R7FA4M3AD2CBM integrates two independent 12-bit successive approximation ADC units: ADC12 Unit 0 supports up to 12 input channels, and Unit 1 supports up to 10 channels. Three analog input pins (AN000/AN100, AN001/AN101, AN002/AN102) are shared between units, yielding up to 19 total usable analog input pins across the 144-pin BGA package.

Is the R7FA4M3AD2CBM pin-compatible with other RA4M3 group members?

Yes, the R7FA4M3AD2CBM shares identical pinout and peripheral mapping with other 144-pin BGA variants in the RA4M3 family, including R7FA4M3AF2CBM and R7FA4M3AD3CBM. This allows direct PCB reuse when upgrading flash size or temperature grade, provided the software accommodates memory configuration differences.

What security features are implemented in hardware on the R7FA4M3AD2CBM?

The R7FA4M3AD2CBM implements Arm TrustZone for memory and peripheral isolation, Secure Crypto Engine 9 (SCE9) with AES/RSA/ECC/SHA256 accelerators, tamper detection on three dedicated pins (TAMP0–TAMP2), secure key management with unique 128-bit ID, and lifecycle management controls - all verified in silicon and documented in the R01DS0368EJ0150 datasheet.