Renesas R7FA6M4AF3CFM#AA0

Overview

R7FA6M4AF3CFM#AA0 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, 256 KB SRAM with parity/ECC, integrated Ethernet MAC, USB 2.0 Full-Speed, SDHI, QSPI/OSPI, dual 12-bit ADCs (5 Msps interleaved), dual DACs, CTSU, and Secure Crypto Engine 9 with TrustZone for secure embedded applications in industrial gateways and connected edge devices.

For engineers reviewing the R7FA6M4AF3CFM#AA0 datasheet, R7FA6M4AF3CFM#AA0 pinout, R7FA6M4AF3CFM#AA0 application, or R7FA6M4AF3CFM#AA0 equivalent, key selection criteria include its -40°C to +105°C temperature grade, 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch), 41 I/O pins with 9× 5-V tolerant inputs, dual CAN 2.0B interfaces, and hardware-accelerated AES/RSA/ECC/SHA256 cryptography supporting secure boot and device lifecycle management.

Technical Context

The R7FA6M4AF3CFM#AA0 implements Armv8-M architecture with TrustZone security extension, enabling strict isolation between secure and non-secure firmware execution environments. Its memory subsystem includes dual-bank flash supporting live firmware updates without interruption, plus ECC on 64 KB of SRAM and parity on 192 KB - critical for functional safety compliance.

Connectivity integrates Ethernet MAC (RMII only), USBFS host/device with internal transceiver, SDHI (1-/4-bit), QSPI/OSPI for external memory expansion, and 10× SCI channels supporting UART, SPI, I²C, smart card, and Manchester modes. Analog subsystem delivers two independent 12-bit ADC units (12+10 channels, 3 shared pins) and two 12-bit DACs with temperature sensor input routing.

Key Specifications

Pinout & Package

64-pin LQFP (PLQP0064KB-C), 10 mm × 10 mm body, 0.5 mm pitch, exposed pad optional. Pin count matches R7FA6M4AF3CFM#AA0's 41 general-purpose I/Os, 1 dedicated input, 42 pull-up resistors, 41 N-ch open-drain outputs, and 9× 5-V tolerant pins per datasheet Table 1.13.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA6M4AF2CFM#AA0, the R7FA6M4AF3CFM#AA0 provides extended temperature operation critical for outdoor or under-hood deployment; versus R7FA6M5BH3CFM#AA0, it retains QSPI/OSPI for high-speed external memory while trading integrated PHY for lower power and smaller footprint.

Availability

R7FA6M4AF3CFM#AA0 is available at Aetrix Electronics and suitable for industrial gateways, secure edge nodes, motor control hubs, and HMI-enabled PLCs requiring stable component supply across long product lifecycles.

Supply support for R7FA6M4AF3CFM#AA0 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 with over 40 years of MCU innovation.

The RA6M4 group targets high-performance, secure industrial and IoT edge applications, combining Arm Cortex-M33 with hardware-accelerated cryptography, rich connectivity, and functional safety features to accelerate development of certified systems.

FAQ

What is the maximum operating frequency of the R7FA6M4AF3CFM#AA0?

The R7FA6M4AF3CFM#AA0 operates at a maximum frequency of 200 MHz using its Arm Cortex-M33 core. This speed is achieved with the on-chip PLL driven by the main clock oscillator (8–24 MHz crystal or external clock). The core supports dynamic clock scaling, allowing lower frequencies for power-sensitive operation while maintaining real-time responsiveness at full speed for compute-intensive tasks like cryptographic operations or motor control algorithms.

Does the R7FA6M4AF3CFM#AA0 support Ethernet connectivity?

Yes, the R7FA6M4AF3CFM#AA0 includes an Ethernet MAC (ETHERC) compliant with IEEE 802.3, supporting RMII interface only. It requires an external PHY transceiver (e.g., LAN8720A) for physical layer connectivity. The MAC is tightly coupled with the Ethernet DMA Controller (EDMAC) to enable zero-copy packet transfers, reducing CPU load during high-throughput network operations - essential for industrial protocol gateways and time-sensitive networking applications.

What security features does the R7FA6M4AF3CFM#AA0 provide?

The R7FA6M4AF3CFM#AA0 integrates Arm TrustZone for hardware-enforced secure/non-secure world separation, Secure Crypto Engine 9 (SCE9) with AES-128/256, RSA-2048/4096, ECC-256/384, and SHA224/256 acceleration, plus tamper detection pins and device lifecycle management. These features collectively support secure boot, encrypted firmware updates, key injection, and PSA Certified Level 3 compliance - enabling robust protection against cloning, reverse engineering, and runtime attacks in connected industrial devices.

Which package type is used for the R7FA6M4AF3CFM#AA0?

The R7FA6M4AF3CFM#AA0 uses a 64-pin LQFP package (PLQP0064KB-C), measuring 10 mm × 10 mm with 0.5 mm pitch. This package provides 41 general-purpose I/O pins, 9 of which are 5-V tolerant, and supports standard PCB assembly processes. Its compact size and thermal performance make it ideal for space-constrained industrial controllers and edge sensor nodes where reliability across -40°C to +105°C is mandatory.

Can the R7FA6M4AF3CFM#AA0 execute firmware updates without interrupting operation?

Yes, the R7FA6M4AF3CFM#AA0 supports seamless firmware updates via its dual-bank code flash architecture. One bank executes active firmware while the other receives and validates a new image; SWAP operation then atomically switches execution to the updated bank. Background programming allows concurrent read/write operations, and the Flash API ensures safe transitions - eliminating downtime in mission-critical systems like remote telemetry or factory automation controllers.