Renesas R7FS3A37A3A01CFB#BA0

Overview

R7FS3A37A3A01CFB#BA0 from Renesas Electronics is a 48-MHz Arm® Cortex®-M4 microcontroller with FPU, 512-KB code flash, 96-KB SRAM, integrated Segment LCD Controller (SLCDC), Capacitive Touch Sensing Unit (CTSU), USB 2.0 Full-Speed, 14-bit ADC, 12-bit DAC, and hardware security (AES128/256, TRNG, GHASH). It targets industrial HMI, smart metering, and battery-backed embedded control requiring real-time responsiveness, low-power operation, and secure firmware execution.

For engineers reviewing the R7FS3A37A3A01CFB#BA0 datasheet, R7FS3A37A3A01CFB#BA0 pinout, R7FS3A37A3A01CFB#BA0 application, or R7FS3A37A3A01CFB#BA0 equivalent, key selection considerations include its 144-pin LQFP package, –40°C to +105°C operating range, dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and support for USB Battery Charging Specification 1.2 - critical for robust, field-deployable designs.

Technical Context

This MCU implements an Armv7E-M architecture with DSP extensions and single-precision FPU, enabling deterministic floating-point math for motor control and sensor fusion. Its memory subsystem includes 512-KB code flash with 100,000 erase/write cycles, 8-KB data flash, and 96-KB SRAM split into 80-KB parity-protected and 16-KB ECC-protected regions.

The system integrates multiple autonomous peripherals: Event Link Controller (ELC) enables CPU-free peripheral chaining; DMAC (4-channel) and DTC offload data movement; SLCDC drives up to 54 segments × 4 commons; CTSU supports 27 touch channels; and the CAN module complies with ISO 11898-1 (CAN 2.0B) with 32 configurable mailboxes.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (PLQP0144KA-B), 20 mm × 20 mm, 0.5 mm pitch, RoHS-compliant Sn termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS3A37A3A01CFB#BA0, the R7FS3A37A2A01CFB#BA0 offers identical feature set at lower temperature grade, while the R7FA4M1AB3CFB#AA0 trades HMI peripherals for enhanced security and CAN FD - making R7FS3A37A3A01CFB#BA0 optimal for thermally demanding, display-driven edge devices.

Availability

R7FS3A37A3A01CFB#BA0 is available at Aetrix Electronics and suitable for industrial HMI, smart metering, and automotive body control applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FS3A37A3A01CFB#BA0 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, with over 40 years of microcontroller innovation.

The R7FS3A37A3A01CFB#BA0 belongs to the Synergy S3A3 Group - designed specifically for scalable, secure, and easy-to-develop HMI-rich embedded applications combining high-performance Cortex-M4 execution with integrated analog, timing, and human interface peripherals.

FAQ

What is the maximum operating frequency and core architecture of the R7FS3A37A3A01CFB#BA0?

The R7FS3A37A3A01CFB#BA0 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 extensions, supporting single-precision IEEE 754 floating-point operations. This architecture enables efficient execution of real-time control algorithms, digital filtering, and sensor fusion tasks directly on the R7FS3A37A3A01CFB#BA0 without external coprocessors.

Does the R7FS3A37A3A01CFB#BA0 support USB device and host functionality?

Yes, the R7FS3A37A3A01CFB#BA0 integrates a USB 2.0 Full-Speed (USBFS) module that supports both device and host controller operation. It includes an on-chip transceiver and voltage regulator, complies with USB Battery Charging Specification 1.2, and provides up to 10 configurable pipes. The R7FS3A37A3A01CFB#BA0 can enumerate as a CDC, HID, or MSC device, or act as a host for USB keyboards, flash drives, or other peripherals - all without external PHY components.

What LCD and touch capabilities does the R7FS3A37A3A01CFB#BA0 provide?

The R7FS3A37A3A01CFB#BA0 integrates a Segment LCD Controller (SLCDC) supporting up to 54 segments × 4 commons or 50 segments × 8 commons, and a Capacitive Touch Sensing Unit (CTSU) with 27 channels. These peripherals eliminate external LCD drivers and touch controllers. The SLCDC supports waveform A/B selection, internal voltage boosting, and contrast adjustment; the CTSU delivers noise-immune self-capacitance measurement - both are fully managed by hardware timers and DMA, reducing CPU load in the R7FS3A37A3A01CFB#BA0.

How does the R7FS3A37A3A01CFB#BA0 ensure memory reliability and functional safety?

The R7FS3A37A3A01CFB#BA0 ensures memory reliability through Error Correction Code (ECC) protection on 16 KB of SRAM and parity checking on the remaining 80 KB. It also includes Flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT), and register write protection. These features collectively support IEC 61508 SIL2 compliance and enable robust operation in safety-critical R7FS3A37A3A01CFB#BA0 deployments.

What are the supported operating voltage and temperature ranges for the R7FS3A37A3A01CFB#BA0?

The R7FS3A37A3A01CFB#BA0 operates from 1.6 V to 5.5 V on the VCC supply rail and is qualified for industrial temperature range of –40°C to +105°C. This wide voltage range allows direct interfacing with 3.3 V and 5 V peripherals, while the 105°C rating ensures reliable operation in sealed enclosures, under-hood automotive locations, and high-ambient industrial settings - a key differentiator of the R7FS3A37A3A01CFB#BA0 versus 85°C-grade variants.