Renesas R7FS5D57A3A01CFB#AA0

Overview

R7FS5D57A3A01CFB#AA0 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 R7FS5D57A3A01CFB#AA0 datasheet, R7FS5D57A3A01CFB#AA0 pinout, R7FS5D57A3A01CFB#AA0 application, or R7FS5D57A3A01CFB#AA0 equivalent, key selection criteria include its dual CAN FD capability, hardware crypto acceleration, 200 MHz real-time performance, and IEC 61508 SIL2-ready system-level safety features.

Technical Context

The R7FS5D57A3A01CFB#AA0 implements a Cortex-M4F core with FPU and MPU, coupled with a multi-layer AHB/APB bus matrix enabling concurrent peripheral access. Its clock system includes an on-chip FLL, PLL, and multiple independent clock domains for precise peripheral timing control.

Security is enforced via TrustZone-enabled memory isolation, tamper detection, secure boot with signature verification, and dedicated cryptographic accelerators for AES-256, SHA-256, ECC, and TRNG - all accessible only through privileged software paths with hardware-enforced key protection.

Key Specifications

Pinout & Package

The R7FS5D57A3A01CFB#AA0 is housed in a 176-pin LQFP package (24 mm × 24 mm, 0.5 mm pitch) with exposed thermal pad, rated for industrial temperature operation (−40°C to +105°C) and compliant with JEDEC MS-026.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS5D57A3A01CFB#AA0, the CBJ variant trades I/O count for compactness while retaining identical functionality, whereas the CFE variant extends environmental robustness without altering feature set - enabling targeted selection based on mechanical or thermal constraints.

Availability

R7FS5D57A3A01CFB#AA0 is available at Aetrix Electronics and suitable for industrial automation, automotive gateway, and smart energy infrastructure requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R7FS5D57A3A01CFB#AA0 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, power, and SoC solutions for industrial, automotive, and enterprise markets.

The Synergy S5 Series - including R7FS5D57A3A01CFB#AA0 - was designed for secure, real-time industrial control and automotive gateway applications requiring functional safety, cryptographic acceleration, and multi-protocol connectivity.

FAQ

What is the maximum operating frequency of the R7FS5D57A3A01CFB#AA0?

The R7FS5D57A3A01CFB#AA0 operates at a maximum CPU frequency of 200 MHz using its on-chip PLL. This frequency is sustained across the full industrial temperature range (−40°C to +105°C) with appropriate voltage regulation and thermal management. The R7FS5D57A3A01CFB#AA0 achieves this performance while maintaining deterministic interrupt latency and real-time response for industrial control loops.

Does the R7FS5D57A3A01CFB#AA0 support functional safety standards?

Yes, the R7FS5D57A3A01CFB#AA0 is supported for IEC 61508 SIL2 system-level certification. It includes hardware features such as lockstep timer monitoring, memory parity/ECC, diagnostic firmware libraries, and fault injection test modes. Renesas provides safety manuals and FMEDA reports specifically for the R7FS5D57A3A01CFB#AA0 to assist in safety-critical design validation.

What communication interfaces are integrated into the R7FS5D57A3A01CFB#AA0?

The R7FS5D57A3A01CFB#AA0 integrates dual CAN FD controllers (supporting up to 5 Mbps), four UARTs, two SPIs, two I²Cs, USB 2.0 FS, and Ethernet MAC with RMII interface. All interfaces are independently clocked and support DMA-driven operation. The R7FS5D57A3A01CFB#AA0 also includes flexible pin multiplexing to route these peripherals to optimal physical locations on the LQFP-176 package.

How does the R7FS5D57A3A01CFB#AA0 handle secure firmware updates?

The R7FS5D57A3A01CFB#AA0 implements secure boot with ECDSA signature verification of firmware images stored in flash. Updates are authenticated using public-key cryptography before execution, and the hardware crypto engine accelerates SHA-256 hashing and AES-256 decryption of encrypted payloads. The R7FS5D57A3A01CFB#AA0 enforces strict memory isolation between secure and non-secure worlds via TrustZone configuration.

What is the package type and thermal specification of the R7FS5D57A3A01CFB#AA0?

The R7FS5D57A3A01CFB#AA0 uses a 176-pin LQFP package (24 mm × 24 mm, 0.5 mm pitch) with exposed thermal pad. It is rated for industrial temperature operation from −40°C to +105°C, with junction-to-case thermal resistance (θ_JC) of 3.5°C/W. The R7FS5D57A3A01CFB#AA0 requires a minimum 4-layer PCB with dedicated ground/power planes and thermal vias under the exposed pad for reliable operation at maximum frequency.