Renesas R7FA4M1AB3CFP#HA0

Overview

R7FA4M1AB3CFP from Renesas Electronics is a 48-MHz Arm® Cortex-M4 microcontroller with FPU, 256-KB code flash, 32-KB SRAM, USB 2.0 Full-Speed interface, 14-bit ADC, and integrated Segment LCD Controller - designed for low-power industrial HMI and touch-enabled control panels.

For engineers reviewing the R7FA4M1AB3CFP datasheet, R7FA4M1AB3CFP pinout, R7FA4M1AB3CFP application, or R7FA4M1AB3CFP equivalent, key selection criteria include its -40°C to +105°C operating range, 100-pin LQFP package, dual watchdog timers (WDT/IWDT), hardware AES-128/256 encryption, and CTSU-based capacitive touch sensing capability.

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.

System-level features include Event Link Controller (ELC) for peripheral-to-peripheral event chaining without CPU intervention, Dual DMAC (4-channel) + DTC for zero-CPU data movement, and independent clock domains for RTC, AGT, and IWDT - enabling precise low-power timing and fail-safe recovery in safety-critical applications.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant Sn finish, rated for industrial 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 R7FA4M1AB3CFP, R7FA4M2AB3CFP extends HMI capability without changing PCB layout, while STM32L476RG trades integrated peripherals for raw performance and memory - making R7FA4M1AB3CFP optimal for cost-sensitive, display-and-touch-centric industrial designs.

Availability

R7FA4M1AB3CFP is available at Aetrix Electronics and suitable for industrial control panels, smart energy meters, medical patient monitors, and building automation controllers requiring stable component supply across extended temperature ranges.

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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management solutions for automotive, industrial, and IoT markets.

The RA4M1 Group targets cost-sensitive, low-power HMI applications - integrating LCD drivers, capacitive touch, USB, and security features into a single chip to reduce system complexity and bill-of-materials cost.

FAQ

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

The R7FA4M1AB3CFP features an Arm Cortex-M4 core with Floating Point Unit (FPU), operating at a maximum frequency of 48 MHz. It implements the Armv7E-M architecture with DSP instruction set and supports single-precision IEEE 754 floating-point operations. This core configuration enables efficient execution of real-time control algorithms and sensor fusion tasks within the R7FA4M1AB3CFP's power envelope.

Does the R7FA4M1AB3CFP support hardware encryption and secure boot?

Yes, the R7FA4M1AB3CFP integrates the Secure Crypto Engine 5 (SCE5), providing hardware-accelerated AES-128 and AES-256 encryption/decryption, GHASH for authentication, and a True Random Number Generator (TRNG). These features enable secure firmware signing, encrypted over-the-air updates, and trusted boot verification - all implemented within the R7FA4M1AB3CFP without consuming CPU cycles or external security ICs.

What display and touch interfaces are built into the R7FA4M1AB3CFP?

The R7FA4M1AB3CFP includes a Segment LCD Controller (SLCDC) supporting up to 38 segments × 4 commons or 34 segments × 8 commons, and a Capacitive Touch Sensing Unit (CTSU) with 27 electrode channels. These peripherals allow direct connection to segmented displays and projected-capacitive touch overlays - eliminating external drivers and reducing BOM cost. Both interfaces are fully integrated within the R7FA4M1AB3CFP silicon.

What is the operating temperature range and package type of the R7FA4M1AB3CFP?

The R7FA4M1AB3CFP is packaged in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) and rated for industrial operation from -40°C to +105°C. This wide temperature range ensures reliable performance in enclosed control cabinets, outdoor metering equipment, and other thermally demanding environments where the R7FA4M1AB3CFP is commonly deployed.

How does the R7FA4M1AB3CFP handle low-power operation and real-time timing?

The R7FA4M1AB3CFP supports multiple low-power modes including STOP and ULPM, with two Low Power Asynchronous General-Purpose Timers (AGT) running independently on the 32.768 kHz sub-clock oscillator. Its Realtime Clock (RTC) includes calendar mode with battery backup via VBATT, and Clock Frequency Accuracy Measurement Circuit (CAC) validates clock integrity. These capabilities ensure precise, ultra-low-power timing essential for battery-operated systems using the R7FA4M1AB3CFP.