Renesas R5F566NNHGFC#V0

Overview

R5F566NNHGFC#V0 from Renesas Electronics is a 32-bit RXv3 core microcontroller in the RX66N Group, featuring 2 MB flash memory, 384 KB RAM, and operating at up to 120 MHz. It integrates dual CAN FD controllers, USB 2.0 FS host/device, Ethernet MAC, and hardware encryption (AES-128/256, SHA, TRNG). Designed for industrial HMI and gateway applications requiring real-time control and secure connectivity.

For engineers reviewing the R5F566NNHGFC#V0 datasheet, R5F566NNHGFC#V0 pinout, R5F566NNHGFC#V0 application, or R5F566NNHGFC#V0 equivalent, key selection criteria include its 145-pin TFLGA package, 120 MHz CPU clock, dual CAN FD support, Ethernet MAC with RMII interface, and integrated security accelerators for TLS offload and secure boot.

Technical Context

The R5F566NNHGFC#V0 implements the RXv3 32-bit superscalar CPU core with FPU and double-precision floating-point coprocessor. It supports multiple low-power modes (Sleep, Deep Sleep, Software Standby) with wake-up via external interrupt or peripheral event.

Its system architecture includes a 64-bit AXI bus matrix, 32-bit AHB peripherals, and dedicated DMA channels for USB, Ethernet, and SDHI. The on-chip clock system provides PLL, sub-clock oscillator, and independent watchdog timer with window function.

Key Specifications

Pinout & Package

145-pin Thin Fine-Pitch Land Grid Array (TFLGA) with exposed thermal pad. Package meets JEDEC MO-220, RoHS-compliant, rated for −40°C to +105°C ambient operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F566NNHGFC#V0, the R5F566TEHGFP#V0 trades Ethernet and package density for lower cost and QFP manufacturability, while the R5F566TKHGBG#V0 retains the same footprint and memory but removes USB and one CAN FD channel-making it optimal for fixed-function gateways where those interfaces are unused.

Availability

R5F566NNHGFC#V0 is available at Aetrix Electronics and suitable for industrial HMI, smart gateway, secure field device, and networked power monitor applications requiring stable component supply and long-term lifecycle support.

Supply support for R5F566NNHGFC#V0 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.

The RX66N Group is designed for high-performance, secure, and real-time industrial edge applications-integrating connectivity, cryptography, and functional safety features into a single MCU platform.

FAQ

What is the maximum operating temperature rating for the R5F566NNHGFC#V0?

The R5F566NNHGFC#V0 is rated for operation from −40°C to +105°C ambient temperature. This industrial-grade thermal specification is validated per Renesas' Standard quality grade and applies to all electrical characteristics in the datasheet. The 145-pin TFLGA package includes an exposed thermal pad to facilitate heat transfer in enclosed industrial enclosures. Thermal derating is not required within this range when PCB layout follows Renesas' recommended copper pour and via patterns.

Does the R5F566NNHGFC#V0 support secure boot with public-key verification?

Yes, the R5F566NNHGFC#V0 supports secure boot with RSA-2048 public-key verification implemented in ROM-based secure loader. During power-on reset, the device verifies the signature of the user application image stored in flash before transferring control. This feature is enabled via fuse settings and requires pre-programming of the public key hash into the device's secure key storage area. The R5F566NNHGFC#V0 does not require external secure elements to achieve this level of boot integrity.

What peripheral interfaces are included in the R5F566NNHGFC#V0 for industrial networking?

The R5F566NNHGFC#V0 includes dual CAN FD controllers (supporting up to 5 Mbps), a 10/100 Ethernet MAC with RMII interface, and USB 2.0 Full-Speed host/device capability. All three interfaces operate concurrently without resource contention due to the AXI bus matrix architecture. The Ethernet MAC supports IEEE 1588 Precision Time Protocol timestamping, and both CAN FD modules support flexible data-rate arbitration and payload lengths up to 64 bytes-enabling deterministic multi-protocol industrial networking in a single R5F566NNHGFC#V0 device.

Is hardware floating-point support available in the R5F566NNHGFC#V0?

Yes, the R5F566NNHGFC#V0 integrates a single-precision floating-point unit (FPU) and a separate double-precision floating-point coprocessor compliant with IEEE 754-2008. The FPU executes arithmetic, comparison, and conversion instructions in 1–3 cycles, while the coprocessor handles double-precision operations including fused multiply-add. Both units are fully pipelined and accessible via standard RXv3 instruction mnemonics. This capability is confirmed in the RX66N Group User's Manual: Hardware (Rev.1.20, Nov 2023), Section 2.8.

What development tools are officially supported for the R5F566NNHGFC#V0?

Renesas provides official support for the R5F566NNHGFC#V0 through e2 studio IDE, CS+ (formerly High-performance Embedded Workshop), and the Renesas Flash Programmer. Debugging is enabled via JTAG/SWD using E2 Lite or E2 emulator probes. Board-level support includes the RX66N Envision Kit (RTK0EG0032S01000BE) and the RX66N Cloud Kit (RTK0EG0042S01000BE), both of which map all R5F566NNHGFC#V0 peripherals-including Ethernet, dual CAN FD, and USB-to accessible headers and connectors.