Renesas R7FA4M2AC3CFP#BA0

Overview

R7FA4M2AC3CFP from Renesas is a 32-bit Arm Cortex-M33 microcontroller operating at up to 100 MHz, featuring 384 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 12-bit DACs, 12-bit ADC (22-channel), CAN, and Secure Crypto Engine (AES/RSA/ECC/SHA256) with Arm TrustZone for secure edge IoT node control.

For engineers reviewing the R7FA4M2AC3CFP datasheet, R7FA4M2AC3CFP pinout, R7FA4M2AC3CFP application, or R7FA4M2AC3CFP equivalent, key selection considerations include its 100-pin LQFP package, -40°C to +105°C industrial temperature rating, integrated capacitive touch sensing (CTSU), battery-backed RTC with calendar mode, and hardware-accelerated cryptography for firmware authentication and secure boot.

Technical Context

The R7FA4M2AC3CFP implements Armv8-M architecture with TrustZone security extension, supporting secure/non-secure MPU regions (8+8), dual SysTick timers, and CoreSight ETM-M33 trace. Its memory subsystem includes background operation-capable flash with 100,000 P/E cycles and ECC-protected SRAM.

Connectivity combines six SCI channels (UART/SPI/IIC/Manchester), two I2C interfaces, one SPI, one CAN 2.0B controller, USBFS host/device with internal transceiver, QSPI for external serial memory, SDHI for SD/SDHC/SDXC cards, and SSIE for I2S/TDM audio. Analog subsystem includes ADC12 with temperature sensor input and dual DAC12 outputs.

Key Specifications

Pinout & Package

100-pin LQFP (PLQP0100KB-B) package with exposed pad; 77 general-purpose I/O pins, 14 5-V tolerant inputs, dedicated USB_DP/DM, QSPI_IO0–3, SD0DAT0–3, CAN_RX/TX, and CTSU_TSn touch sense pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M2AD3CFP, the R7FA4M2AC3CFP trades 128 KB flash for identical security, analog, and connectivity features-ideal for cost-optimized industrial designs. Versus STM32H743VI, it offers superior out-of-box USB/SDHI integration and lower power consumption but less raw CPU bandwidth.

Availability

R7FA4M2AC3CFP is available at Aetrix Electronics and suitable for industrial HMI, secure gateways, medical sensor hubs, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA4M2AC3CFP 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 industrial, automotive, and enterprise applications.

The RA4M2 Group targets secure, high-integration industrial and IoT edge nodes, emphasizing Arm TrustZone, hardware crypto acceleration, and rich analog/connectivity peripherals in compact packages.

FAQ

What is the maximum operating frequency of the R7FA4M2AC3CFP?

The R7FA4M2AC3CFP 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 clock oscillator (MOSC) or high-speed on-chip oscillator (HOCO). The device maintains full peripheral functionality-including USBFS, SDHI, and QSPI-at this frequency, with timing validated across the full -40°C to +105°C temperature range.

Does the R7FA4M2AC3CFP include an integrated USB transceiver?

Yes, the R7FA4M2AC3CFP includes a fully integrated USB 2.0 Full-Speed transceiver. Pins USB_DP and USB_DM connect directly to the USB connector without requiring an external PHY. The module supports both host and device roles, all USB 2.0 transfer types (control/bulk/interrupt/isochronous), and has internal 1.5 kΩ pull-up resistors configurable via registers for device enumeration.

How much flash memory does the R7FA4M2AC3CFP have, and what are its endurance specifications?

The R7FA4M2AC3CFP contains 384 KB of code flash memory and 8 KB of data flash memory. The data flash is rated for 100,000 program/erase cycles and supports background operation-allowing code execution while writing to flash. Both flash types include error detection and correction logic, and the code flash supports secure region locking via TrustZone configuration.

Can the R7FA4M2AC3CFP support SD card interfacing, and what standards are compliant?

Yes, the R7FA4M2AC3CFP integrates a full SD/MMC Host Interface (SDHI) supporting SD, SDHC, and SDXC cards over 1-bit or 4-bit buses. It complies with SD Physical Layer Specification v3.01 and JEDEC eMMC 4.51 standards. Implementation requires adherence to the SD Host/Ancillary Product License Agreement (SD HALA), and the interface includes dedicated SD0CLK, SD0CMD, and SD0DAT0–3 pins in its 100-pin LQFP package.

What security features are implemented in the R7FA4M2AC3CFP beyond Arm TrustZone?

Beyond Arm TrustZone, the R7FA4M2AC3CFP includes the Secure Crypto Engine 9 (SCE9) with hardware acceleration for AES-128/256, RSA-2048, ECC, and SHA256; a 128-bit unique ID; tamper detection pins; secure key injection; and lifecycle management controls. These features enable secure boot, firmware authentication, encrypted storage, and resistance to side-channel attacks-validated against Common Criteria EAL4+ requirements in Renesas' RA security certification.

Is the R7FA4M2AC3CFP pin-compatible with other members of the RA4M2 family?

Yes, the R7FA4M2AC3CFP is pin-compatible with other 100-pin LQFP variants in the RA4M2 family, including R7FA4M2AD3CFP and R7FA4M2AB3CFP. All share identical pin assignments, electrical characteristics, and peripheral mappings. Firmware and PCB layouts designed for one 100-pin RA4M2 part can be reused across the group, with differences limited to flash size (256/384/512 KB) and optional features like SDHI or SSIE enabled per variant.