Renesas R7FA4M3AF3CFP#AA0

Overview

R7FA4M3AF3CFP#AA0 from Renesas is a 100 MHz Arm Cortex-M33 microcontroller with 1 MB code flash, 8 KB data flash, and 128 KB SRAM (with ECC), integrated USB 2.0 Full-Speed, SDHI, QSPI, dual CAN, and Secure Crypto Engine for secure IoT edge nodes requiring real-time control, connectivity, and tamper-resistant firmware updates.

For engineers reviewing the R7FA4M3AF3CFP#AA0 datasheet, R7FA4M3AF3CFP#AA0 pinout, R7FA4M3AF3CFP#AA0 application, or R7FA4M3AF3CFP#AA0 equivalent, this page delivers verified technical context, package-specific I/O mapping, security architecture details, and validated alternative MCUs for industrial HMI, secure gateways, and motor control designs.

Technical Context

The R7FA4M3AF3CFP#AA0 implements Arm TrustZone for hardware-isolated secure/non-secure execution environments, with dedicated Secure MPU (8 regions) and Non-secure MPU (8 regions), plus SCE9 cryptographic accelerators for AES, RSA, ECC, SHA256, and GHASH. It supports dual-bank flash SWAP operation for seamless firmware updates without runtime interruption.

Its system-level integration includes Event Link Controller (ELC) for CPU-free peripheral chaining, 8-channel DMAC + DTC for autonomous data movement, and dual 12-bit ADCs (5 Msps interleaved) with shared analog input pins across units - all operating within -40°C to +105°C under 2.7–3.6 V supply.

Key Specifications

Pinout & Package

100-pin LQFP (PLQP0100KB-B), 14 mm × 14 mm, 0.5 mm pitch, with 75 general-purpose I/O pins, 14 5-V-tolerant inputs, 76 pull-up resistors, and N-ch open-drain outputs on all I/Os.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R7FA4M3AF2CFP#AA0, the R7FA4M3AF3CFP#AA0 adds extended temperature qualification critical for factory automation; versus R7FA6M3AF3CFP#AA0, it offers optimal balance of security, connectivity, and thermal resilience without over-engineering for mid-tier industrial edge nodes.

Availability

R7FA4M3AF3CFP#AA0 is available at Aetrix Electronics and suitable for industrial motor drives, secure IoT gateways, human-machine interfaces, and energy monitoring systems requiring stable component supply across long production lifecycles.

Supply support for R7FA4M3AF3CFP#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The RA4M3 Group targets secure, connected, and energy-efficient industrial edge devices - designed to accelerate development of certified IoT endpoints with integrated TrustZone, crypto engines, and rich analog/peripheral sets.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4M3AF3CFP#AA0?

The R7FA4M3AF3CFP#AA0 features an Arm Cortex-M33 core operating at up to 100 MHz, based on the Armv8-M architecture with Security Extension (TrustZone). It includes dual SysTick timers (secure and non-secure instances), CoreSight ETM-M33 for trace, and MPU support for both secure and non-secure memory regions - all confirmed in the R01DS0368EJ0150 datasheet Rev.1.50.

Does the R7FA4M3AF3CFP#AA0 support USB device and host functionality?

Yes, the R7FA4M3AF3CFP#AA0 integrates a USB 2.0 Full-Speed module (USBFS) that operates in both device and host modes, with an internal transceiver, 10-pipe endpoint buffer, and support for all USB 2.0 transfer types. The USB_DP and USB_DM pins are routed to dedicated I/Os on the 100-pin LQFP package, and VBUS detection is handled via USB_VBUS pin - per Section 1.8 of the datasheet.

How many analog-to-digital converter channels does the R7FA4M3AF3CFP#AA0 provide, and what is their performance?

The R7FA4M3AF3CFP#AA0 includes two independent 12-bit successive approximation ADC units: ADC12 Unit 0 supports up to 12 input channels, and Unit 1 supports up to 10, with three shared pins (AN000/AN100, etc.). Interleaved operation achieves 5 Msps aggregate sampling rate - specified in Table 1.9 and validated in the RA4M3 datasheet Rev.1.50.

What security features are implemented in the R7FA4M3AF3CFP#AA0 beyond Arm TrustZone?

Beyond Arm TrustZone, the R7FA4M3AF3CFP#AA0 integrates the Secure Crypto Engine 9 (SCE9) with hardware accelerators for AES, RSA, ECC, DSA, SHA224/SHA256, and GHASH; a 128-bit unique ID; tamper detection via up to three dedicated pins; and power analysis resistance. These are documented in Section 1.1 and Table 1.11 of the official datasheet R01DS0368EJ0150.

Is the R7FA4M3AF3CFP#AA0 pin-compatible with other RA4M3 family members in the same package?

Yes, the R7FA4M3AF3CFP#AA0 is fully pin-compatible with other RA4M3 variants in the 100-pin LQFP package (e.g., R7FA4M3AE3CFP#AA0, R7FA4M3AD3CFP#AA0), sharing identical pin functions, electrical characteristics, and footprint - as confirmed in Table 1.13 and Figure 1.2 of the RA4M3 datasheet Rev.1.50.