Renesas R7FA4M3AF3CFB#HA0

Overview

R7FA4M3AF3CFB#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 R7FA4M3AF3CFB#HA0 datasheet, R7FA4M3AF3CFB#HA0 pinout, R7FA4M3AF3CFB#HA0 application, or R7FA4M3AF3CFB#HA0 equivalent, key selection considerations include its -40°C to +105°C operating range, 144-pin LQFP package, TrustZone-enabled security partitioning, dual 12-bit ADCs with 5 Msps interleaving, and CTSU-based capacitive touch support.

Technical Context

The R7FA4M3AF3CFB#HA0 implements Armv8-M with TrustZone, enabling hardware-isolated secure/non-secure worlds; it supports up to three flash memory regions and three SRAM regions with individual peripheral attribution. Its Secure Crypto Engine 9 accelerates AES, RSA, ECC, SHA256, and GHASH with tamper detection and 128-bit unique ID.

System-level integration includes Event Link Controller (ELC) for CPU-free peripheral triggering, Data Transfer Controller (DTC) and 8-channel DMAC for zero-CPU data movement, and dual GPT32/GPT16 timers supporting BLDC motor control with 3-phase PWM outputs (GTOUUP/GTOULO etc.).

Key Specifications

Pinout & Package

144-pin LQFP (PLQP0144KA-B), 20 mm × 20 mm, 0.5 mm pitch, with exposed thermal pad (not electrically connected). Pin count: 109 general-purpose I/O, 1 dedicated input (P200), 21 5-V-tolerant pins, and full support for USB, CAN, QSPI, SDHI, and CTSU interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M3AF3CFB#HA0, the R7FA6M5BH3CFB#HA0 delivers higher compute and connectivity for complex gateways, while the R7FA4M2AF3CFB#HA0 offers functional subset at lower cost-neither is pin-compatible, requiring board redesign for migration.

Availability

R7FA4M3AF3CFB#HA0 is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, BLDC motor controllers, and medical sensor hubs requiring stable component supply across extended temperature ranges.

Supply support for R7FA4M3AF3CFB#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 industrial, automotive, and enterprise markets.

The RA4M3 Group targets high-performance, secure, and scalable embedded applications-designed specifically for industrial automation, human-machine interfaces, and IoT edge nodes demanding robust security and rich peripheral integration.

FAQ

What is the maximum operating frequency of the R7FA4M3AF3CFB#HA0?

The R7FA4M3AF3CFB#HA0 operates at a maximum frequency of 100 MHz using its Arm Cortex-M33 core. This speed is achieved with the on-chip PLL driven by the main clock oscillator (MOSC) or high-speed on-chip oscillator (HOCO), and is fully supported across its -40°C to +105°C operating temperature range. The R7FA4M3AF3CFB#HA0 maintains timing compliance at this frequency under worst-case voltage (2.7 V) and temperature conditions per its datasheet specifications.

Does the R7FA4M3AF3CFB#HA0 include an integrated USB transceiver?

Yes, the R7FA4M3AF3CFB#HA0 integrates a full-speed USB 2.0 transceiver compliant with the USB Specification 2.0. It supports both host and device modes, includes internal termination resistors, and requires only external 27 Ω series resistors on USB_DP and USB_DM. The R7FA4M3AF3CFB#HA0 does not require an external PHY, reducing BOM cost and PCB complexity for USB-connected applications.

What security features are implemented in the R7FA4M3AF3CFB#HA0?

The R7FA4M3AF3CFB#HA0 integrates Arm TrustZone for hardware-enforced secure/non-secure world separation, plus the Secure Crypto Engine 9 (SCE9) supporting AES, RSA, ECC, SHA256, and GHASH acceleration. It includes tamper detection pins, power analysis resistance, 128-bit unique ID, and device lifecycle management. These features are documented in the R01DS0368EJ0150 datasheet and apply directly to the R7FA4M3AF3CFB#HA0 variant.

Which package type does the R7FA4M3AF3CFB#HA0 use?

The R7FA4M3AF3CFB#HA0 uses a 144-pin LQFP package (PLQP0144KA-B), measuring 20 mm × 20 mm with 0.5 mm pitch and an exposed thermal pad. This package provides 109 general-purpose I/O pins, 21 of which are 5-V tolerant, and supports all integrated peripherals including USB, CAN, QSPI, SDHI, and CTSU. The part number suffix "FB" explicitly denotes this LQFP-144 configuration.

Can the R7FA4M3AF3CFB#HA0 support capacitive touch sensing?

Yes, the R7FA4M3AF3CFB#HA0 includes a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 20 touch channels. It uses self-capacitance measurement with built-in noise cancellation and supports TSCAP biasing for improved SNR. The CTSU is fully functional in the R7FA4M3AF3CFB#HA0 and requires no external components beyond standard PCB layout practices for touch electrodes and shielding.