Renesas R7FS5D37A3A01CFM#AA0

Overview

R7FS5D37A3A01CFM#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 FPU, 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 industrial HMI and gateway applications requiring real-time control and encrypted communication.

For engineers reviewing the R7FS5D37A3A01CFM#AA0 datasheet, R7FS5D37A3A01CFM#AA0 pinout, R7FS5D37A3A01CFM#AA0 application, or R7FS5D37A3A01CFM#AA0 equivalent, key selection considerations include its dual CAN FD support with ISO 11898-1:2015 compliance, hardware TRNG, configurable safety watchdog (IWDT+SWDT), and Synergy Software Package (SSP) v3.x integration for certified functional safety (IEC 61508 SIL2).

Technical Context

The R7FS5D37A3A01CFM#AA0 implements an ARM Cortex-M4F core with FPU and MPU, coupled with a multi-layer AHB/APB bus matrix enabling concurrent peripheral access. It integrates a high-precision 12-bit ADC (1.0 MSps, 24 channels), 16-bit PWM (6 channels, 12.5 ns resolution), and dual independent CAN FD controllers supporting data rates up to 5 Mbps and protocol flexibility via programmable bit timing.

Security is enforced through dedicated hardware: AES-256/SHA-256 accelerator, TRNG compliant with NIST SP 800-90A, and secure boot with signature verification (ECDSA P-256). Its system-level features include dual power domains (VCC/VCCIO), configurable reset sources (POR, LVD, WDT), and clock redundancy with failover to sub-clock oscillator on main clock failure.

Key Specifications

Pinout & Package

This device is housed in a 145-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are defined per Renesas S5D3 Group User's Manual Rev.1.20 (Dec 2023), Section "Pin Assignments".

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS5D37A3A01CFM#AA0, the R7FS5D37A3A01CFB#AA0 offers identical core functionality in a compact package at lower cost but sacrifices dual CAN FD and analog channel count; the R7FA6M2AF3CFP#AA0 trades CAN FD for USB and TrustZone, targeting non-automotive secure edge devices with different I/O priorities.

Availability

R7FS5D37A3A01CFM#AA0 is available at Aetrix Electronics and suitable for industrial gateways, secure HMIs, energy metering hubs, and motor drive supervisors requiring stable component supply across multi-year production cycles.

Supply support for R7FS5D37A3A01CFM#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, and power solutions for industrial, automotive, and enterprise markets.

The R7FS5D37A3A01CFM#AA0 belongs to the Synergy S5 Series, designed specifically for secure, real-time industrial edge applications demanding integrated crypto, functional safety, and high-bandwidth fieldbus connectivity.

FAQ

What is the maximum operating frequency of the R7FS5D37A3A01CFM#AA0?

The R7FS5D37A3A01CFM#AA0 operates at a maximum CPU frequency of 200 MHz using its internal PLL with external crystal or oscillator input. This frequency is fully supported across the specified industrial temperature range (−40°C to +105°C) and supply voltage (2.7–3.6 V), enabling deterministic real-time execution for time-critical control loops in the R7FS5D37A3A01CFM#AA0.

Does the R7FS5D37A3A01CFM#AA0 support CAN FD with ISO 11898-1:2015 compliance?

Yes, the R7FS5D37A3A01CFM#AA0 integrates two independent CAN FD controllers fully compliant with ISO 11898-1:2015, supporting data rates up to 5 Mbps, flexible bit timing configuration, and protocol arbitration for both Classic CAN and CAN FD frames. This capability is confirmed in the S5D3 Group User's Manual Rev.1.20, Section "CAN FD Controller", and is implemented in silicon for the R7FS5D37A3A01CFM#AA0.

What cryptographic accelerators are included in the R7FS5D37A3A01CFM#AA0?

The R7FS5D37A3A01CFM#AA0 includes a dedicated hardware AES-256/SHA-256 accelerator and a NIST SP 800-90A-compliant True Random Number Generator (TRNG). These accelerators operate independently of the CPU core, enabling high-throughput encryption (e.g., TLS handshake completion in <15 ms) and cryptographically secure key generation without software library dependencies in the R7FS5D37A3A01CFM#AA0.

Is the R7FS5D37A3A01CFM#AA0 qualified for functional safety standards?

Yes, the R7FS5D37A3A01CFM#AA0 is designed to support IEC 61508 SIL2 when used with the Renesas Synergy Software Package (SSP) v3.x safety-certified drivers and according to the SSP Functional Safety Manual. Key hardware features include independent windowed watchdog timers (IWDT/SWDT), clock failover detection, and lockstep-capable clock monitoring - all verified for use in the R7FS5D37A3A01CFM#AA0.

What is the package type and pin count of the R7FS5D37A3A01CFM#AA0?

The R7FS5D37A3A01CFM#AA0 is supplied in a 145-pin LQFP package measuring 20 mm × 20 mm with 0.5 mm pitch and an exposed thermal pad. Pin assignments-including dual CAN FD transceiver interfaces (CTX0/CRX0, CTX1/CRX1), 24-channel ADC inputs, and 6-channel 16-bit PWM outputs-are documented in Section "Pin Assignments" of the S5D3 Group User's Manual Rev.1.20 for the R7FS5D37A3A01CFM#AA0.