Renesas R7FA4M1AB3CFP#BA0

Overview

R7FA4M1AB3CFP from Renesas Electronics is a 48-MHz Arm® Cortex-M4 microcontroller with FPU, 256-KB code flash, 32-KB SRAM, integrated Segment LCD Controller (SLCDC), Capacitive Touch Sensing Unit (CTSU), USB 2.0 Full-Speed interface, 14-bit ADC, and hardware AES/SHA security engine (SCE5). It targets low-power HMI applications such as industrial control panels and smart home displays requiring real-time touch response, local display driving, and secure firmware updates.

For engineers reviewing the R7FA4M1AB3CFP datasheet, R7FA4M1AB3CFP pinout, R7FA4M1AB3CFP application, or R7FA4M1AB3CFP equivalent, key selection criteria include its 100-pin LQFP package with 81 GPIOs (9 of which are 5-V tolerant), dual AGT timers for ultra-low-power wake-up, RTC with battery backup, and full USB Battery Charging 1.2 compliance - all critical for embedded HMI designs demanding robustness, power efficiency, and human interface integration.

Technical Context

The R7FA4M1AB3CFP implements an Armv7E-M architecture with DSP extensions and single-precision FPU, supporting deterministic real-time execution up to 48 MHz. Its memory subsystem includes ECC-protected SRAM (16 KB) and parity-protected SRAM (16 KB), plus 8-KB data flash rated for 100,000 P/E cycles - enabling safe over-the-air firmware updates in field-deployed devices.

System-level features include the Event Link Controller (ELC) for CPU-free peripheral chaining, four-channel DMAC + DTC for autonomous data movement, and dual watchdogs (WDT + IWDT) with independent clock sources - collectively enabling fail-safe operation in safety-conscious industrial environments without runtime CPU overhead.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA4M1AB2CLJ, the R7FA4M1AB3CFP adds USBFS and extends temperature range to +105°C - making it optimal for thermally demanding enclosures with plug-and-play configuration. Against R7FA6M2AF3CFP, it trades raw performance and memory for lower cost and proven qualification in volume production HMI designs.

Availability

R7FA4M1AB3CFP is available at Aetrix Electronics and suitable for industrial control panels, smart thermostats, medical front panels, and point-of-sale terminals requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA4M1AB3CFP 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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RA4M1 Group is designed specifically for low-power, high-integration human-machine interface applications - emphasizing segment LCD driving, capacitive touch, USB connectivity, and functional safety features in cost-sensitive industrial and consumer devices.

FAQ

What is the maximum operating frequency and core architecture of the R7FA4M1AB3CFP?

The R7FA4M1AB3CFP features an Arm Cortex-M4 core with Floating Point Unit (FPU), operating at a maximum frequency of 48 MHz under the Armv7E-M architecture with DSP instruction set. This enables efficient execution of real-time control algorithms and signal processing tasks required in HMI and industrial applications. The R7FA4M1AB3CFP's FPU supports IEEE 754-2008 single-precision operations without software emulation overhead.

Does the R7FA4M1AB3CFP support USB device functionality, and what charging standards does it implement?

Yes, the R7FA4M1AB3CFP integrates a USB 2.0 Full-Speed Module (USBFS) that operates as a device controller with an on-chip transceiver and internal 3.3-V LDO regulator. It complies with USB Battery Charging Specification 1.2, enabling detection of Standard Downstream Ports (SDP), Charging Downstream Ports (CDP), and Dedicated Charging Ports (DCP) - allowing simultaneous data transfer and fast charging in portable HMI devices. The R7FA4M1AB3CFP requires no external USB PHY.

How many capacitive touch channels and segment LCD segments does the R7FA4M1AB3CFP support?

The R7FA4M1AB3CFP includes a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 27 electrode channels, and a Segment LCD Controller (SLCDC) capable of driving up to 304 segments (38 segments × 8 commons) or 272 segments (34 segments × 8 commons). These peripherals operate independently of the CPU via hardware acceleration, enabling low-latency touch response and flicker-free display updates. The R7FA4M1AB3CFP's CTSU and SLCDC eliminate the need for external touch or LCD driver ICs.

What safety and security features are implemented in the R7FA4M1AB3CFP?

The R7FA4M1AB3CFP incorporates multiple hardware-based safety and security mechanisms: ECC protection for 16 KB of SRAM, parity checking for another 16 KB, independent watchdog timer (IWDT) with dedicated 15-kHz oscillator, Clock Frequency Accuracy Measurement Circuit (CAC), and Secure Crypto Engine 5 (SCE5) supporting AES-128/256, GHASH, and True Random Number Generation (TRNG). These features enable compliance with IEC 61508 SIL2 and secure firmware authentication in the R7FA4M1AB3CFP.

What package type and temperature grade does the R7FA4M1AB3CFP use?

The R7FA4M1AB3CFP is supplied in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) rated for operation from −40°C to +105°C. This industrial-grade temperature range ensures reliability in enclosed control panels and outdoor-rated equipment. The R7FA4M1AB3CFP's LQFP format supports standard reflow assembly and offers accessible debug pins (SWDIO/SWCLK) for in-circuit programming and validation.