Renesas R7FA4M3AF3CFP#HA0

Overview

R7FA4M3AF3CFP#HA0 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 industrial HMI and secure edge node applications.

For engineers reviewing the R7FA4M3AF3CFP#HA0 datasheet, R7FA4M3AF3CFP#HA0 pinout, R7FA4M3AF3CFP#HA0 application, or R7FA4M3AF3CFP#HA0 equivalent, key selection criteria include operating temperature range (−40°C to +105°C), LQFP-100 package compatibility, TrustZone-enabled secure boot, dual 12-bit ADCs with 5 Msps interleaving, and integrated CTSU for capacitive touch interfaces.

Technical Context

The R7FA4M3AF3CFP#HA0 implements Armv8-M with TrustZone, enabling hardware-isolated secure and non-secure execution environments. Its memory subsystem includes 1 MB code flash with background SWAP operation and 8 KB data flash rated for 100,000 P/E cycles, supporting robust firmware updates and parameter storage.

Peripherals are tightly coupled via Event Link Controller (ELC) and DMA Controller (DMAC × 8), allowing autonomous low-latency signal routing-e.g., ADC conversion completion triggering GPT32 capture without CPU intervention-and deterministic real-time response in motor control or sensor fusion systems.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-B), 14 mm × 14 mm, 0.5 mm pitch, −40°C to +105°C operating range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M3AF3CFP#HA0, the R7FA4M3AF3CFB#AA0 offers identical functionality in a larger package for I/O expansion, while the R7FA6M3AF3CFP#HA0 trades CTSU and lower power for higher compute throughput and Ethernet-making it suitable for networked edge nodes rather than cost-sensitive HMI endpoints.

Availability

R7FA4M3AF3CFP#HA0 is available at Aetrix Electronics and suitable for industrial HMI panels, secure edge gateways, motor drive control units, and automotive body controllers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA4M3AF3CFP#HA0 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, including R7FA4M3AF3CFP#HA0, is designed for secure, real-time embedded applications demanding high integration, functional safety readiness, and low-power operation in harsh environments.

FAQ

What is the maximum operating frequency of the R7FA4M3AF3CFP#HA0?

The R7FA4M3AF3CFP#HA0 features an Arm Cortex-M33 core with a maximum operating frequency of 100 MHz. This speed is achieved using 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 CAN-at this frequency, and timing-critical operations like ADC sampling and PWM generation are fully synchronized to the system clock domain. The R7FA4M3AF3CFP#HA0 datasheet confirms this rating across the full −40°C to +105°C temperature range.

Does the R7FA4M3AF3CFP#HA0 support TrustZone security features?

Yes, the R7FA4M3AF3CFP#HA0 integrates Arm TrustZone technology to enforce hardware-isolated secure and non-secure execution states. It supports up to three secure regions in code flash, two in data flash, and three in SRAM, with individual security attribution for each peripheral. This enables secure boot, cryptographic key protection, and runtime isolation of sensitive functions-all verified in the R7FA4M3AF3CFP#HA0 datasheet (R01DS0368EJ0150). The Secure Crypto Engine 9 works in concert with TrustZone to accelerate AES, RSA, ECC, and SHA256 operations within the secure world.

What package type and pin count does the R7FA4M3AF3CFP#HA0 use?

The R7FA4M3AF3CFP#HA0 uses a 100-pin LQFP package (PLQP0100KB-B), measuring 14 mm × 14 mm with 0.5 mm pitch. It provides 75 general-purpose I/O pins, 14 of which are 5-V tolerant, along with dedicated power, clock, debug, and peripheral interface pins. This package is distinct from other RA4M3 variants such as the 144-pin LQFP (R7FA4M3AF3CFB#AA0) or 64-pin LQFP (R7FA4M3AF3CFM#AA0), and the R7FA4M3AF3CFP#HA0 pinout is fully documented in Section 1.6 of its official datasheet.

Can the R7FA4M3AF3CFP#HA0 operate in extended temperature conditions?

Yes, the R7FA4M3AF3CFP#HA0 is rated for operation from −40°C to +105°C, making it suitable for industrial automation, automotive under-hood modules, and outdoor edge devices. This extended temperature grade is indicated by the "3" in the part number suffix (R7FA4M3AF3CFP#HA0), and all electrical specifications-including flash endurance (100,000 P/E cycles), SRAM ECC operation, and USBFS timing-are guaranteed across this full range. Thermal design guidance, including junction-to-ambient thermal resistance (θ_JA = 40°C/W for LQFP-100), is provided in the R7FA4M3AF3CFP#HA0 datasheet.

What analog peripherals are integrated into the R7FA4M3AF3CFP#HA0?

The R7FA4M3AF3CFP#HA0 integrates two 12-bit successive approximation ADCs (ADC12 × 2) with up to 12 + 10 input channels, supporting interleaved sampling at 5 Msps; two 12-bit DACs (DAC12 × 2); and an on-die temperature sensor (TSN) with linear output. These analog resources are accessible via dedicated pins (ANmn, DAn, TSn) and support internal references (VREFH/VREFL), external triggers (ADTRGm), and direct DMA transfers. All analog specs-including INL/DNL, conversion time, and temperature accuracy-are validated across the full operating temperature range in the R7FA4M3AF3CFP#HA0 datasheet.