Renesas R7FA6M4AF3CFB#BA0

Overview

R7FA6M4AF3CFB#BA0 from Renesas is a high-performance 32-bit Arm Cortex-M33 microcontroller operating at up to 200 MHz, featuring 1 MB dual-bank code flash with background/swap operation, 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 IoT edge nodes and industrial gateways.

For engineers reviewing the R7FA6M4AF3CFB#BA0 datasheet, R7FA6M4AF3CFB#BA0 pinout, R7FA6M4AF3CFB#BA0 application, or R7FA6M4AF3CFB#BA0 equivalent, key selection criteria include 144-pin LQFP package compatibility, -40°C to +105°C industrial temperature rating, dual-bank flash for robust OTA updates, integrated Ethernet PHY interface support, and hardware-accelerated AES/RSA/SHA256 for secure boot and firmware authentication.

Technical Context

The R7FA6M4AF3CFB#BA0 implements Armv8-M architecture with TrustZone security extension (r0p4-00rel0), supporting secure/non-secure MPU regions (8 each) and dual SysTick timers. Its memory subsystem includes 1 MB code flash with SWAP operation, 8 KB data flash (100,000 P/E cycles), and 256 KB SRAM with configurable parity or ECC protection.

Connectivity is centered on a full-featured peripheral set: dual CAN 2.0B controllers, Ethernet MAC/EDMAC with RMII support, USBFS host/device mode with internal transceiver, SDHI with 4-bit bus, QSPI/OSPI for external memory expansion, and 10-channel SCI with UART/IIC/SPI/Manchester modes - all accessible via 109 GPIOs in the 144-pin LQFP package.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (PLQP0144KA-B), 20 mm × 20 mm, 0.5 mm pitch, lead-free (Sn only), RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA6M4AF3CFB#BA0, the BGA variant offers higher density but less prototyping flexibility, while the 768 KB version retains identical security, connectivity, and analog capabilities - making both viable alternatives depending on flash requirement and form factor constraints.

Availability

R7FA6M4AF3CFB#BA0 is available at Aetrix Electronics and suitable for industrial gateways, secure edge nodes, human-machine interfaces, and motor control gateways requiring stable component supply across long product lifecycles.

Supply support for R7FA6M4AF3CFB#BA0 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RA6M4 Group targets high-performance, secure, and connected microcontrollers for industrial automation and edge AI - designed to unify real-time control, rich connectivity, and hardware-rooted security in a single chip.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6M4AF3CFB#BA0?

The R7FA6M4AF3CFB#BA0 features an Arm Cortex-M33 core operating at up to 200 MHz, based on the Armv8-M architecture with security extension (r0p4-00rel0). It includes TrustZone isolation, dual SysTick timers (secure/non-secure), and CoreSight ETM-M33 for debug visibility. This architecture enables deterministic real-time performance alongside hardware-enforced security boundaries - essential for the R7FA6M4AF3CFB#BA0's role in industrial and secure IoT applications.

Does the R7FA6M4AF3CFB#BA0 support Ethernet connectivity, and what interface does it use?

Yes, the R7FA6M4AF3CFB#BA0 integrates a fully compliant IEEE 802.3 Ethernet MAC controller (ETHERC) with associated Ethernet DMA Controller (EDMAC). It supports RMII interface for connection to external PHYs such as the LAN8720A. The R7FA6M4AF3CFB#BA0 does not include a physical layer transceiver, so an external PHY is required - but the MAC/EDMAC offloads frame handling and DMA transfers, minimizing CPU overhead during network operations.

What security features are implemented in the R7FA6M4AF3CFB#BA0 beyond Arm TrustZone?

Beyond Arm TrustZone, the R7FA6M4AF3CFB#BA0 includes the Secure Crypto Engine 9 (SCE9) with hardware acceleration for AES-128/256, RSA-2048/4096, ECC, and SHA224/256. It provides a 128-bit unique ID, tamper detection pins, secure key injection, and lifecycle management. These features enable secure boot, encrypted firmware updates, and TLS stack acceleration - all verified and hardened within the R7FA6M4AF3CFB#BA0 silicon, not reliant on software-only implementations.

Can the R7FA6M4AF3CFB#BA0 execute code directly from external flash memory?

Yes, the R7FA6M4AF3CFB#BA0 supports execute-in-place (XIP) from external memory via its Octa Serial Peripheral Interface (OSPI), which connects to OctaFlash devices. Its Quad SPI (QSPI) interface also supports XIP from compatible serial NOR flash. This capability allows the R7FA6M4AF3CFB#BA0 to run application code directly from external memory - reducing reliance on internal flash and enabling larger firmware images without external RAM expansion.

What is the pin count and package type of the R7FA6M4AF3CFB#BA0, and how many GPIOs are available?

The R7FA6M4AF3CFB#BA0 uses a 144-pin LQFP package (PLQP0144KA-B, 20 mm × 20 mm, 0.5 mm pitch) and provides 109 general-purpose I/O pins. Of these, 21 pins are 5-V tolerant, all support pull-up resistors, and 109 are N-channel open-drain capable. This pin count and I/O flexibility make the R7FA6M4AF3CFB#BA0 well-suited for complex industrial interfaces requiring multiple UARTs, CAN, Ethernet control signals, and touch sensing - all within a single-package solution.