Renesas R7FA6M4AD2CBM#BC0

Overview

R7FA6M4AD2CBM from Renesas is a high-performance 32-bit Arm Cortex-M33 microcontroller operating at up to 200 MHz, featuring 512 KB code flash, 8 KB data flash, and 256 KB SRAM with parity/ECC. It integrates Ethernet MAC, USB 2.0 Full-Speed, SDHI, QSPI/OSPI, dual CAN, and Secure Crypto Engine (SCE9) with TrustZone for secure industrial edge nodes and gateway applications.

For engineers reviewing the R7FA6M4AD2CBM datasheet, R7FA6M4AD2CBM pinout, R7FA6M4AD2CBM application, or R7FA6M4AD2CBM equivalent, key selection criteria include its 144-pin BGA package, -40°C to +85°C temperature grade, dual-bank flash architecture with background operation, integrated Ethernet PHY interface support, and hardware-accelerated AES/RSA/SHA256 cryptography.

Technical Context

The R7FA6M4AD2CBM implements Armv8-M with TrustZone security extension, enabling strict isolation between secure and non-secure firmware execution environments. Its memory subsystem includes dual-bank flash supporting SWAP and background programming, plus 256 KB SRAM with configurable parity or ECC protection for functional safety compliance.

Connectivity is centered on a full-featured peripheral set: ETHERC/EDMAC with RMII support, USBFS with internal transceiver, dual CAN 2.0B controllers requiring external transceivers, and QSPI/OSPI interfaces for external XIP-capable flash. The analog subsystem comprises two 12-bit ADCs (5 Msps interleaved), two 12-bit DACs, and an on-die temperature sensor.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA6M4AD2CBM, R7FA6M4AF2CBM provides double flash capacity for complex OTA stacks, while R7FA6M4AD3CBM extends thermal range without altering I/O count or peripheral features - both retain pin-for-pin compatibility and identical BGA footprint.

Availability

R7FA6M4AD2CBM is available at Aetrix Electronics and suitable for industrial gateways, secure edge nodes, motor control hubs, and HMI terminals requiring stable component supply across multi-year production cycles.

Supply support for R7FA6M4AD2CBM 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 industrial, automotive, and enterprise applications.

The RA6M4 group - including R7FA6M4AD2CBM - was designed for secure, connected industrial edge devices requiring real-time performance, functional safety, and hardware-rooted trust in resource-constrained environments.

FAQ

What is the maximum operating frequency of the R7FA6M4AD2CBM?

The R7FA6M4AD2CBM features an Arm Cortex-M33 core with a maximum operating frequency of 200 MHz. This clock speed is achieved using the on-chip PLL driven by the main oscillator (MOSC) or high-speed on-chip oscillator (HOCO). The R7FA6M4AD2CBM maintains full peripheral functionality at this frequency, including real-time Ethernet packet processing and concurrent USBFS transactions.

Does the R7FA6M4AD2CBM include an integrated Ethernet PHY?

No, the R7FA6M4AD2CBM includes only the Ethernet MAC (ETHERC) and DMA controller (EDMAC), not a physical layer transceiver. It supports RMII interface and requires an external PHY such as the LAN8742A or KSZ8081RND. The R7FA6M4AD2CBM provides all necessary MAC registers, descriptor management, and interrupt signaling for full IEEE 802.3 compliance when paired with a compatible PHY.

What security features does the R7FA6M4AD2CBM provide beyond Arm TrustZone?

Beyond Arm TrustZone, the R7FA6M4AD2CBM integrates the Secure Crypto Engine 9 (SCE9) with hardware accelerators for AES-128/256, RSA-2048/4096, ECC, DSA, SHA224/256, and GHASH. It also includes tamper detection pins, secure key injection, device lifecycle management, and power analysis resistance - all coordinated with TrustZone to form a certified secure element subsystem meeting Common Criteria EAL4+ requirements.

Can the R7FA6M4AD2CBM support both USB host and device modes simultaneously?

No, the R7FA6M4AD2CBM USBFS module supports either host or device mode at runtime, but not both simultaneously. Mode selection is configured at initialization via the USB module's MODE register. While it can switch modes dynamically under firmware control, concurrent operation (e.g., acting as a USB host to a flash drive while presenting as a CDC device to a PC) is not supported due to shared endpoint buffers and state machine constraints.

What is the purpose of the dual-bank flash architecture in the R7FA6M4AD2CBM?

The dual-bank flash architecture in the R7FA6M4AD2CBM enables background programming and SWAP operations: one bank executes code while the other is erased or programmed. This allows zero-downtime firmware updates - critical for unattended industrial systems. The R7FA6M4AD2CBM implements this with dedicated control logic that manages bank switching, address remapping, and interrupt masking during transitions without CPU intervention.