Renesas R7FA4M2AB3CFP#BA0

Overview

R7FA4M2AB3CFP from Renesas is a 32-bit Arm Cortex-M33 microcontroller operating at up to 100 MHz, featuring 256 KB code flash, 8 KB data flash, and 128 KB SRAM with parity/ECC. It integrates USB 2.0 Full-Speed, SDHI, Quad SPI, CAN, dual 12-bit DACs, 12-bit ADC (22-channel), CTSU, RTC with VBATT support, and Secure Crypto Engine 9 with TrustZone for secure embedded control in industrial HMI and connected edge devices.

For engineers reviewing the R7FA4M2AB3CFP datasheet, R7FA4M2AB3CFP pinout, R7FA4M2AB3CFP application, or R7FA4M2AB3CFP equivalent, key selection considerations include its 100-pin LQFP package, -40°C to +105°C operation, integrated security peripherals (SCE9 + TrustZone), and peripheral set optimized for motor control, secure gateway, and touch-enabled industrial UI.

Technical Context

The R7FA4M2AB3CFP implements Armv8-M architecture with dual Systick timers (Secure/Non-secure), PMSAv8 MPU (8 regions each), and CoreSight ETM-M33 for trace. Its memory subsystem includes background operation-capable flash and 1 KB standby SRAM with battery backup via VBATT.

Connectivity combines six SCI channels (UART/IIC/SPI/Manchester), two IIC, one SPI, QSPI, USBFS (host/device), CAN 2.0B, SDHI, and SSIE audio interface. Analog subsystem comprises ADC12 (22 inputs), DAC12 × 2, TSN, and CTSU with 12 touch pins - all managed via ELC and DTC for low-CPU-overhead event-driven operation.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-B), 14 mm × 14 mm, 0.5 mm pitch, Pb-free Sn terminal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M2AD3CFP, the R7FA4M2AB3CFP trades flash capacity for lower unit cost while retaining identical security, analog, and connectivity features - making it optimal for cost-constrained industrial controls. Versus R7FA6M2AF3CFP, it offers proven maturity, smaller footprint, and lower power at the expense of raw throughput and Ethernet capability.

Availability

R7FA4M2AB3CFP is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, BLDC motor drives, and smart metering applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA4M2AB3CFP 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 IoT markets.

The RA4M2 Group targets mid-range industrial and IoT edge devices, combining Arm TrustZone security, rich analog integration, and low-power operation to accelerate development of certified, scalable embedded systems.

FAQ

What is the maximum operating frequency of the R7FA4M2AB3CFP?

The R7FA4M2AB3CFP operates at a maximum frequency of 100 MHz using its Arm Cortex-M33 core. This speed is achieved via the on-chip PLL driven by the main clock oscillator (8–24 MHz crystal) or high-speed on-chip oscillator (HOCO). The core supports dynamic clock scaling, allowing lower frequencies for power-sensitive operation without compromising real-time responsiveness in critical tasks.

Does the R7FA4M2AB3CFP support USB device and host modes?

Yes, the R7FA4M2AB3CFP USB 2.0 Full-Speed module supports both device and host modes per the Universal Serial Bus Specification 2.0. It includes an internal transceiver, 10-pipe endpoint buffer, and supports all transfer types (control, bulk, interrupt, isochronous). In host mode, it additionally supports low-speed devices. No external PHY is required for basic USB functionality.

How many analog-to-digital converter channels does the R7FA4M2AB3CFP have?

The R7FA4M2AB3CFP integrates a 12-bit successive approximation ADC (ADC12) with up to 22 analog input channels (AN00–AN21). These include dedicated pins plus internal sources such as temperature sensor output and internal reference voltage. Channel selection, sampling time, and trigger sources (software, timer, or peripheral event) are fully configurable in firmware.

Is the R7FA4M2AB3CFP pin-compatible with other RA4M2 group members?

Yes, the R7FA4M2AB3CFP is pin-compatible with other 100-pin LQFP variants in the RA4M2 family, including R7FA4M2AC3CFP and R7FA4M2AD3CFP. All share identical pin assignments, electrical characteristics, and peripheral mappings. Firmware and PCB designs can be reused across these variants - only flash size differs (256 KB vs. 384 KB vs. 512 KB).

What security features are implemented in hardware on the R7FA4M2AB3CFP?

The R7FA4M2AB3CFP implements Arm TrustZone for hardware-isolated secure/non-secure worlds, Secure Crypto Engine 9 (SCE9) with AES-128/256, RSA-2048, ECC-P256, SHA224/256 acceleration, 128-bit unique ID, tamper detection pins (TAMP0–TAMP2), and secure pin multiplexing. These features enable secure boot, encrypted firmware updates, and protected key storage without external secure elements.