Renesas R5F572NNHDBD#20

Overview

R5F572NNHDBD#20 from Renesas is a 32-bit RXv3 microcontroller with 240 MHz CPU, double-precision IEEE-754 FPU, 4 MB on-chip code flash, 1 MB SRAM (including 32 KB ECC RAM), and integrated Ethernet MAC compliant with IEEE 1588 - deployed in industrial HMIs, motor control gateways, and real-time PLC edge nodes.

For engineers reviewing the R5F572NNHDBD#20 datasheet, R5F572NNHDBD#20 pinout, R5F572NNHDBD#20 application, or R5F572NNHDBD#20 equivalent, key selection criteria include IEEE 1588 PTP timing accuracy, dual-bank flash for safe firmware updates, 182 GPIOs with 5-V tolerance, CAN FD readiness via software configuration, and hardware-accelerated trigonometric functions for motion control loops.

Technical Context

The R5F572NNHDBD#20 implements the RXv3 core with 16 register banks, double-precision FPU (21 instructions), and collective register save for deterministic interrupt latency. It integrates two independent Ethernet MAC channels with EPTPCb for hardware timestamping and EDMACa for descriptor-based DMA - enabling synchronized multi-axis motion control over time-sensitive networking.

Its memory subsystem includes 4 MB dual-bank flash (120 MHz zero-wait access on cache hit), 1 MB SRAM split into 512 KB fast-access RAM and 512 KB expansion RAM, plus 32 KB ECC RAM for safety-critical data buffers. Clock architecture supports independent domain scaling: ICLK up to 240 MHz, PCLKA up to 120 MHz for peripherals like ETHERC and GPTW, and PCLKB up to 60 MHz for timers and ADC.

Key Specifications

Pinout & Package

Package: PLQP0176KB-C - 176-pin LQFP, 24 × 24 mm, 0.5-mm pitch, RoHS-compliant, operating temperature range –40°C to +85°C (D-version).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F572MNHDBD#20, the R5F572NNHDBD#20 adds 2 MB flash capacity and guaranteed dual-bank operation for robust firmware updates; versus R5F566NHDFB#30, it delivers 50% higher CPU performance, hardware PTP timestamping, and dual Ethernet - essential for deterministic distributed control.

Availability

R5F572NNHDBD#20 is available at Aetrix Electronics and suitable for industrial HMIs, motion control gateways, and smart energy meter hubs requiring stable component supply across multi-year production cycles.

Supply support for R5F572NNHDBD#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX72N Group is designed for real-time industrial edge applications demanding high-performance computation, deterministic networking, functional safety, and rich human-machine interface capabilities - with R5F572NNHDBD#20 representing its highest-flash, dual-Ethernet variant.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F572NNHDBD#20?

The R5F572NNHDBD#20 operates at a maximum frequency of 240 MHz and achieves 1396 CoreMark points under benchmark conditions. This performance stems from the RXv3 CPU core's 16-register bank architecture, zero-wait flash access at 120 MHz (cache-hit), and dual-issue capable pipeline - making R5F572NNHDBD#20 suitable for real-time industrial control tasks where deterministic latency is critical.

Does the R5F572NNHDBD#20 support IEEE 1588 Precision Time Protocol hardware timestamping?

Yes, the R5F572NNHDBD#20 integrates the EPTPCb (PTP module for Ethernet controller) that complies with IEEE 1588-2008. It performs hardware timestamping of Ethernet frames at the MAC boundary with sub-microsecond resolution, enabling synchronized multi-axis motion control and time-aware networking without CPU overhead - a capability confirmed in R01DS0343EJ0120 Rev.1.20 Section 1.1.

How much on-chip flash and RAM does the R5F572NNHDBD#20 include, and what safety features do they support?

The R5F572NNHDBD#20 includes 4 MB of dual-bank code flash memory and 1 MB of SRAM (512 KB + 512 KB), plus 32 KB of ECC RAM and 8 KB of standby RAM. The ECC RAM implements SEC-DED (single-error correction, double-error detection), and the flash supports background programming/erasing (BGO) - both features directly support IEC 60730 Class B compliance requirements documented in the device's safety manual.

What communication interfaces are integrated into the R5F572NNHDBD#20 for industrial connectivity?

The R5F572NNHDBD#20 integrates dual IEEE 1588-compliant Ethernet MACs, three CAN channels (ISO 11898-1), 13 SCI channels (including LIN-capable SCIh), three I²C interfaces (up to 1 Mbps), four SPI/RSPI channels, one QSPI, SDHI, MMCIF, USB 2.0 FS host/function/OTG, and parallel camera interface (PDC). These interfaces collectively support industrial protocols including EtherNet/IP, PROFINET, CANopen, and Modbus TCP - all verified in the RX72N Group datasheet R01DS0343EJ0120.

Is the R5F572NNHDBD#20 pin-compatible with other RX72N group MCUs in the same package?

Yes, the R5F572NNHDBD#20 uses the PLQP0176KB-C 176-pin LQFP package and shares identical pinout with other RX72N devices in that footprint, including R5F572MNHDBD#20 and R5F572NNHDBD#20 variants. All share the same 182 GPIO allocation, power/ground layout, and peripheral signal mapping - enabling scalable design reuse across performance tiers without PCB revision.