Renesas R7FS5D97E2A01CLK#AC0

Overview

R7FS5D97E2A01CLK#AC0 from Renesas Electronics is a 32-bit ARM Cortex-M4F-based microcontroller in the Synergy S5 Series, featuring 2 MB flash, 512 KB SRAM, and integrated security accelerators (AES-256, SHA-256, TRNG). It operates at up to 200 MHz, supports USB 2.0 FS/HS, CAN FD, and Ethernet MAC, and targets secure industrial HMI and gateway applications.

For engineers reviewing the R7FS5D97E2A01CLK#AC0 datasheet, R7FS5D97E2A01CLK#AC0 pinout, R7FS5D97E2A01CLK#AC0 application, or R7FS5D97E2A01CLK#AC0 equivalent, key selection criteria include its dual-bank flash for safe firmware updates, hardware crypto engine for TLS offload, and QFP176 package with 148 GPIOs - critical for scalable edge-node designs requiring functional safety support (IEC 61508 SIL2-ready).

Technical Context

The R7FS5D97E2A01CLK#AC0 implements a tightly coupled ARM Cortex-M4F core with FPU and MPU, executing from on-chip flash with 2-cycle zero-wait-state access at 200 MHz. Its system architecture includes dual-bank flash (1 MB + 1 MB) enabling background read while programming, and a configurable memory protection unit supporting region-based access control.

Peripherals are organized across multiple clock domains: PCLKA (up to 200 MHz) for CPU and high-speed peripherals (USB, Ethernet), PCLKB (up to 100 MHz) for timers and serial interfaces (SCI, I2C, SPI), and PCLKC (up to 50 MHz) for low-power modules. The device integrates a dedicated security subsystem with tamper detection, secure boot ROM, and key encryption logic compliant with FIPS PUB 140-2 Level 1.

Key Specifications

Pinout & Package

LQFP-176 package with 24 × 24 mm body, 0.5 mm pitch, and exposed thermal pad (EP). Pin 1 marked by dot; pin numbering clockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS5D97E2A01CLK#AC0, the RA6M5 offers stronger security isolation via TrustZone but sacrifices integrated connectivity; the S3A7 reduces BOM cost and footprint but limits scalability for future protocol expansion or secure OTA requirements.

Availability

R7FS5D97E2A01CLK#AC0 is available at Aetrix Electronics and suitable for industrial HMI controllers, secure edge gateways, smart energy meters, and functional safety I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for R7FS5D97E2A01CLK#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.

The Synergy S5 Series targets secure, high-performance industrial edge applications - designed to integrate real-time control, connectivity, and hardware-enforced security in a single chip for IIoT infrastructure.

FAQ

What is the maximum operating frequency of the R7FS5D97E2A01CLK#AC0?

The R7FS5D97E2A01CLK#AC0 operates at a maximum CPU frequency of 200 MHz using its internal PLL driven by the main crystal oscillator. This frequency is sustained across the full −40°C to +105°C temperature range and 2.7–3.6 V supply, with zero wait-state access to on-chip flash memory. The R7FS5D97E2A01CLK#AC0 achieves this performance while maintaining tight timing margins for real-time peripheral handling, including USB and Ethernet MAC operations.

Does the R7FS5D97E2A01CLK#AC0 support secure boot and cryptographic acceleration?

Yes, the R7FS5D97E2A01CLK#AC0 includes a dedicated secure boot ROM that validates digital signatures on firmware images before execution, and a hardware crypto engine supporting AES-256, SHA-256, and TRNG. These features are accessible via the Synergy Security Framework (SSF) and enable TLS 1.2/1.3 offload, secure key storage, and tamper-resistant firmware updates - all integral to the R7FS5D97E2A01CLK#AC0's design for IEC 61508 SIL2 and UL 60730 compliance.

What package type and pin count does the R7FS5D97E2A01CLK#AC0 use?

The R7FS5D97E2A01CLK#AC0 uses a 176-pin LQFP package (24 × 24 mm, 0.5 mm pitch) with an exposed thermal pad. It provides 148 general-purpose I/O pins, including dedicated functions for USB, Ethernet RMII, CAN FD, and security tamper detection. This package is pin-compatible across the S5D9 group and supports standard reflow profiles - a key feature of the R7FS5D97E2A01CLK#AC0 for industrial PCB manufacturability.

Can the R7FS5D97E2A01CLK#AC0 execute firmware updates without interrupting real-time operation?

Yes, the R7FS5D97E2A01CLK#AC0 supports seamless firmware updates using its dual-bank flash architecture. One bank executes the active application while the other receives and validates the new image; the SWAP function then atomically switches banks on reset. This capability - built into the R7FS5D97E2A01CLK#AC0's hardware and supported by the SSP bootloader - ensures zero downtime during field updates, critical for unattended industrial gateways and HMIs.

Which communication interfaces are integrated into the R7FS5D97E2A01CLK#AC0?

The R7FS5D97E2A01CLK#AC0 integrates USB 2.0 Full-Speed and High-Speed (with internal transceivers), CAN FD (5 Mbps), 10/100 Ethernet MAC (RMII interface), multiple SCI/I2C/SPI channels, and SDHI. Notably, it includes both USB and Ethernet for redundant wired connectivity, and CAN FD for high-bandwidth industrial fieldbus integration - all without requiring external transceivers except for the Ethernet PHY. These interfaces are fully supported in the R7FS5D97E2A01CLK#AC0's Synergy Software Package (SSP).