Renesas R5F566NDHDLK#20

Overview

R5F566NDHDLK#20 from Renesas is a 120 MHz 32-bit RXv3 microcontroller with double-precision IEEE-754 FPU, 4 MB on-chip code flash (dual-bank), 1 MB SRAM (including 32 KB ECC RAM), and integrated Ethernet MAC, CAN, SDHI, QSPI, and GLCDC for industrial HMI and networked edge devices.

For engineers reviewing the R5F566NDHDLK#20 datasheet, R5F566NDHDLK#20 pinout, R5F566NDHDLK#20 application, or R5F566NDHDLK#20 equivalent, this MCU targets high-integrity embedded systems requiring real-time control, secure connectivity, deterministic timing, and rich peripheral integration - especially where dual-bank flash safety, hardware-accelerated graphics, and IEC60730 compliance are mandatory.

Technical Context

The R5F566NDHDLK#20 implements the RXv3 CPU core with 113 instructions, 16 general-purpose 32-bit registers, and dedicated 72-bit accumulators. It supports little-endian or big-endian data arrangement and executes instructions at one per cycle up to 120 MHz.

Its clock system includes dual PLLs, selectable internal oscillators (LOCO/HOCO/IWDT), and independent domain clocks (ICLK up to 120 MHz, PCLKA/B/C/D up to 120/60/60/60 MHz) enabling precise peripheral timing - critical for simultaneous Ethernet, CAN, and A/D operations without contention.

Key Specifications

Pinout & Package

Package: PLQP0176KB-C - 176-pin Low-Profile Fine-Pitch Ball Grid Array (LFBGA), 24 mm × 24 mm, 0.5 mm ball pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit industrial MCU applications.

Compared with R5F566NDHDLK#20, the R5F566NEHDLK#20 offers identical real-time performance and peripheral set at lower memory density, while the R5F566TGHDLK#20 trades graphics acceleration for enhanced cryptographic throughput and reduced silicon cost - enabling optimized selection across HMI, gateway, and security-first use cases.

Availability

R5F566NDHDLK#20 is available at Aetrix Electronics and suitable for industrial HMI panels, smart building controllers, medical diagnostic instruments, and protocol gateway designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F566NDHDLK#20 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The RX66N Group - including R5F566NDHDLK#20 - was designed for high-performance, safety-certifiable industrial edge devices requiring integrated connectivity (Ethernet/CAN/USB), deterministic real-time control, and rich human-machine interface capabilities.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F566NDHDLK#20?

The R5F566NDHDLK#20 operates at a maximum frequency of 120 MHz and achieves 698 CoreMark points under benchmark conditions. This performance stems from its RXv3 CPU core with single-cycle instruction execution, 16 general-purpose 32-bit registers, and optimized pipeline - making it suitable for computationally intensive tasks like real-time signal processing and protocol stack handling in the R5F566NDHDLK#20.

Does the R5F566NDHDLK#20 support dual-bank flash for safe firmware updates?

Yes, the R5F566NDHDLK#20 includes a dual-bank code flash architecture that allows background programming (BGO) and bank swapping. This enables live firmware updates without interrupting application execution - a key requirement for fail-safe industrial systems. The R5F566NDHDLK#20's flash controller supports atomic bank exchange, ensuring zero-downtime field upgrades and robust recovery from partial writes.

What graphics capabilities does the R5F566NDHDLK#20 provide?

The R5F566NDHDLK#20 integrates both a Graphic-LCD Controller (GLCDC) and a 2D Drawing Engine (DRW2D). The GLCDC supports up to 800×480 resolution with three overlay planes and multiple color depths (32/16/8/4/1 bpp), while the DRW2D accelerates vector drawing, bit blitting, rotation, and scaling - offloading the CPU and enabling responsive GUIs. These features are fully implemented in the R5F566NDHDLK#20's silicon and require no external graphics IC.

How many CAN interfaces does the R5F566NDHDLK#20 include, and what standards do they meet?

The R5F566NDHDLK#20 integrates three independent CAN modules, each compliant with ISO 11898-1 (Classical CAN) and supporting both standard and extended frames. Each channel provides 32 configurable mailboxes with prioritized message handling, FIFO buffering, and error counters. This triple-CAN capability is native to the R5F566NDHDLK#20 and enables robust multi-bus industrial networking - such as connecting PLCs, drives, and sensors simultaneously.

Is the R5F566NDHDLK#20 qualified for IEC60730 functional safety compliance?

Yes, the R5F566NDHDLK#20 includes a comprehensive IEC60730-compliant safety suite: oscillation-stoppage detection, hardware CRC accelerator, self-diagnostic A/D test, IWDT with window function, and register write protection. These features are silicon-verified and documented in Renesas' Functional Safety Manual for the RX66N Group - enabling certified Class B/C implementations directly using the R5F566NDHDLK#20 without external safety monitors.