Renesas R7FS5D57A3A01CLK#AC1

Overview

R7FS5D57A3A01CLK#AC1 from Renesas Electronics is a 32-bit ARM Cortex-M4F-based microcontroller in the Synergy S5 Series, featuring 2 MB flash, 512 KB SRAM, integrated AES-256/SHA-256 crypto engine, and dual CAN FD interfaces. It operates at up to 200 MHz, supports industrial temperature range (−40°C to +105°C), and targets secure, real-time industrial control applications with functional safety support.

For engineers reviewing the R7FS5D57A3A01CLK#AC1 datasheet, R7FS5D57A3A01CLK#AC1 pinout, R7FS5D57A3A01CLK#AC1 application, or R7FS5D57A3A01CLK#AC1 equivalent, key selection considerations include its dual CAN FD capability, hardware crypto acceleration, 200 MHz CPU clock, 2 MB flash density, and IEC 61508 SIL2-ready system-level safety features.

Technical Context

The R7FS5D57A3A01CLK#AC1 implements an ARM Cortex-M4F core with FPU and MPU, coupled with Renesas' proprietary Synergy Software Package (SSP) abstraction layer. It integrates dual CAN FD controllers compliant with ISO 11898-1:2015, supporting data rates up to 5 Mbps and flexible data payload lengths up to 64 bytes.

Its security architecture includes a dedicated TRNG, tamper detection, secure boot with signature verification, and memory protection via MPU and TrustZone-like partitioning. The device uses a 176-pin LQFP package with dedicated power domains for analog, digital, and I/O sections to ensure noise isolation in mixed-signal environments.

Key Specifications

Pinout & Package

The R7FS5D57A3A01CLK#AC1 is housed in a 176-pin LQFP package (24 mm × 24 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow Renesas' S5D5 group layout, supporting configurable I/O with voltage-tolerant inputs (5 V tolerant on selected pins) and independent power domains for analog/digital sections.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS5D57A3A01CLK#AC1, the BGA variant offers identical functionality in a smaller footprint but requires more complex assembly, while the RA6M5 alternative reduces cost and power at the expense of dual CAN FD throughput and hardware-accelerated security - making it suitable only for non-safety-critical or bandwidth-limited use cases.

Availability

R7FS5D57A3A01CLK#AC1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, smart energy gateways, and railway signaling interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R7FS5D57A3A01CLK#AC1 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and enterprise applications.

The R7FS5D57A3A01CLK#AC1 belongs to the Synergy S5 Series - designed specifically for secure, real-time industrial automation and transportation systems requiring functional safety, high-speed fieldbus connectivity, and hardware-accelerated cryptography.

FAQ

What is the maximum operating frequency of the R7FS5D57A3A01CLK#AC1?

The R7FS5D57A3A01CLK#AC1 operates at a maximum CPU frequency of 200 MHz using its internal PLL driven by an external crystal or oscillator. This frequency is fully supported across the entire industrial temperature range (−40°C to +105°C) and supply voltage range (2.7–3.6 V), enabling deterministic real-time performance for motor control and closed-loop applications. The R7FS5D57A3A01CLK#AC1 achieves this speed without requiring external cache or high-speed RAM, thanks to its tightly coupled memory architecture and 2 MB on-chip flash with 128-bit prefetch buffer.

Does the R7FS5D57A3A01CLK#AC1 support CAN FD, and how many channels are available?

Yes, the R7FS5D57A3A01CLK#AC1 integrates two independent CAN FD controllers compliant with ISO 11898-1:2015, each supporting bit rates up to 5 Mbps in the data phase and payloads up to 64 bytes. Both channels support time-triggered communication, loopback self-test modes, and hardware message filtering with 128 acceptance filters per channel. This dual-CAN FD capability makes the R7FS5D57A3A01CLK#AC1 ideal for applications requiring redundant fieldbus paths or separate control/diagnostic networks - such as industrial PLC backplanes or automotive domain controllers.

What security features are implemented in hardware on the R7FS5D57A3A01CLK#AC1?

The R7FS5D57A3A01CLK#AC1 includes a comprehensive hardware security suite: AES-256/SHA-256 crypto accelerator, true random number generator (TRNG), secure boot with ECDSA signature verification, tamper-detection circuitry, and memory protection via MPU and secure/non-secure partitioning. These features are validated against PSA Certified Level 3 and support IEC 61508 SIL2 system certification. Unlike software-only implementations, the R7FS5D57A3A01CLK#AC1's hardware crypto engine executes AES-128 encryption in under 100 clock cycles - ensuring low-latency TLS handshakes and secure firmware updates without compromising real-time responsiveness.

What is the package type and pin count of the R7FS5D57A3A01CLK#AC1?

The R7FS5D57A3A01CLK#AC1 is packaged in a 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch) with an exposed thermal pad. This package provides full access to all peripherals including dual CAN FD, 24-channel ADC, dual DAC, multiple UART/SPI/I²C interfaces, and 128 general-purpose I/O pins. The LQFP format supports standard reflow soldering and visual inspection, making it suitable for industrial manufacturing environments. The thermal pad improves heat dissipation under sustained 200 MHz operation - critical for fanless enclosures in control cabinet applications.

Is the R7FS5D57A3A01CLK#AC1 qualified for automotive or industrial temperature ranges?

Yes, the R7FS5D57A3A01CLK#AC1 is rated for the extended industrial temperature range of −40°C to +105°C and operates reliably across the full 2.7–3.6 V supply voltage range. While not AEC-Q100 qualified as an automotive-grade part, its specification aligns with "High Quality" grade per Renesas' classification - intended for transportation equipment, safety control systems, and critical infrastructure. It meets JEDEC JESD22-A104 reliability standards for temperature cycling and is commonly deployed in railway signaling, industrial robotics, and energy grid equipment where ambient temperatures exceed commercial limits.