Renesas R7FS3A37A2A01CLK#AC0

Overview

R7FS3A37A2A01CLK#AC0 from Renesas is a 48-MHz Arm Cortex-M4 microcontroller with FPU, 512-KB code flash, 96-KB SRAM, and integrated Segment LCD Controller (SLCDC), Capacitive Touch Sensing Unit (CTSU), USB 2.0 Full-Speed, 14-bit ADC, and CAN interface - designed for industrial HMI, smart metering, and battery-backed embedded control systems operating from –40°C to +85°C.

For engineers reviewing the R7FS3A37A2A01CLK#AC0 datasheet, R7FS3A37A2A01CLK#AC0 pinout, R7FS3A37A2A01CLK#AC0 application, or R7FS3A37A2A01CLK#AC0 equivalent, key selection considerations include its 145-pin LGA package, dual watchdog timers (WDT/IWDT), ECC-protected SRAM, hardware AES/GHASH/ TRNG security engine, and support for USB Battery Charging Specification 1.2.

Technical Context

This MCU implements an Armv7E-M architecture with DSP extensions and single-precision FPU, enabling deterministic real-time signal processing in resource-constrained applications. Its memory subsystem includes 512-KB code flash with 8-KB data flash (100k erase/write cycles), 96-KB SRAM split into 80-KB parity and 16-KB ECC regions, and Memory Mirror Function (MMF) for flexible firmware load/link address mapping.

The system integrates dual clock safety mechanisms - Clock Frequency Accuracy Measurement Circuit (CAC) for runtime oscillator validation and independent IWDT with dedicated 15-kHz on-chip oscillator - alongside hardware-level security via Secure Crypto Engine 5 (SCE5) supporting AES128/256, GHASH, and True Random Number Generation.

Key Specifications

Pinout & Package

Package: 145-pin LGA (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant Sn terminal finish, rated for –40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS3A37A2A01CLK#AC0, the R7FS3A37A3A01CFB offers extended temperature operation at the cost of larger LQFP packaging and slightly reduced CTSU electrode count (24 vs. 27), while R7FS3A37A2A01CBJ trades pin count and LCD capacity for BGA miniaturization - making each variant optimal for distinct mechanical and environmental constraints.

Availability

R7FS3A37A2A01CLK#AC0 is available at Aetrix Electronics and suitable for industrial HMI, smart metering, medical monitoring, and automotive body control applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R7FS3A37A2A01CLK#AC0 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 R7FS3A37A2A01CLK#AC0 belongs to the Synergy S3A3 microcontroller group - engineered specifically for scalable, secure, and low-power human-machine interface applications with integrated LCD, touch, USB, and safety features.

FAQ

What is the maximum operating frequency and core architecture of the R7FS3A37A2A01CLK#AC0?

The R7FS3A37A2A01CLK#AC0 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 Arm Memory Protection Unit (MPU) supporting eight memory regions. This configuration delivers deterministic real-time performance for signal processing and control tasks in the R7FS3A37A2A01CLK#AC0.

Does the R7FS3A37A2A01CLK#AC0 support USB device functionality with battery charging capability?

Yes, the R7FS3A37A2A01CLK#AC0 integrates a USB 2.0 Full-Speed (USBFS) module that operates as both host and device controller, and it complies with USB Battery Charging Specification 1.2. The on-chip transceiver and integrated 3.3-V LDO regulator allow direct 5-V USB port connection, enabling charge negotiation and power delivery without external charging ICs - a key feature of the R7FS3A37A2A01CLK#AC0.

What package type and pin count does the R7FS3A37A2A01CLK#AC0 use?

The R7FS3A37A2A01CLK#AC0 uses a 145-pin Land Grid Array (LGA) package measuring 7 mm × 7 mm with 0.5 mm pitch. This package supports 123 general-purpose I/O pins, 3 dedicated input-only pins, 11 5-V tolerant pins, and 105 N-channel open-drain outputs - matching the mechanical and thermal requirements specified for industrial operation from –40°C to +85°C in the R7FS3A37A2A01CLK#AC0 datasheet.

How does the R7FS3A37A2A01CLK#AC0 ensure functional safety and memory integrity?

The R7FS3A37A2A01CLK#AC0 implements multiple hardware safety mechanisms: Error Correction Code (ECC) for 16 KB of SRAM, parity checking for the remaining 80 KB, Flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT) with dedicated oscillator, and illegal memory access detection. These features collectively meet IEC 61508 SIL-2 readiness requirements and are integral to the R7FS3A37A2A01CLK#AC0's safety architecture.

Can the R7FS3A37A2A01CLK#AC0 drive a segment LCD display and support capacitive touch sensing simultaneously?

Yes, the R7FS3A37A2A01CLK#AC0 integrates both a Segment LCD Controller (SLCDC) supporting up to 54 segments × 4 commons or 50 segments × 8 commons, and a Capacitive Touch Sensing Unit (CTSU) supporting up to 27 electrodes. These peripherals operate independently with dedicated clock domains and DMA channels, allowing concurrent display refresh and touch scan - a defining capability of the R7FS3A37A2A01CLK#AC0 for integrated HMI solutions.