Renesas R5F571MLHDFB#30

Overview

R5F571MLHDFB#30 from Renesas is a 32-bit RXv2 core MCU operating at up to 240 MHz (480 DMIPS), featuring 4 MB on-chip code flash, 512 KB SRAM (including 32 KB ECC RAM), IEEE 1588-compliant dual Ethernet MAC, high-speed USB 2.0 with battery charging, CAN v2.0B (3 channels), and 12-bit A/D converter (29 total channels). It targets industrial automation controllers requiring deterministic real-time networking, secure firmware updates, and multi-protocol connectivity.

For engineers reviewing the R5F571MLHDFB#30 datasheet, R5F571MLHDFB#30 pinout, R5F571MLHDFB#30 application, or R5F571MLHDFB#30 equivalent, key selection criteria include IEEE 1588 timestamping accuracy, dual Ethernet channel isolation, USB 2.0 HS + FS coexistence, 240-MHz deterministic interrupt latency, and IEC 60730 safety support including CRC, oscillation-stop detection, and A/D self-diagnostic.

Technical Context

The R5F571MLHDFB#30 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions - enabling ultra-compact code density and single-cycle 32×32 multiply. Its memory subsystem integrates 4 MB flash with adaptive fetch unit (AFU) for zero-wait execution at ≤120 MHz and one-wait above, plus 512 KB SRAM partitioned into 256 KB no-wait regions and 256 KB conditional-wait regions based on ICLK frequency.

Real-time determinism is enforced via three independent DMA controllers: 8-channel DMAC, 2-channel EXDMAC, and 3-channel EDMAC dedicated to Ethernet - each supporting descriptor-based transfers, block/cluster modes, and event-linking (ELC) to offload CPU from time-critical peripheral coordination. Clock domains are strictly segmented: ICLK (240 MHz), PCLKA (120 MHz for Ethernet/USB/AES), PCLKB (60 MHz for timers/I/O), and dedicated ADCLKs (60 MHz) for dual S12AD units.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F571MLHDFB#30, the R5F571MDDFB#30 reduces flash/SRAM capacity without altering real-time networking capability, while R5F572MLHDFB#30 trades IEEE 1588 and dual Ethernet for graphics acceleration - making R5F571MLHDFB#30 uniquely suited for time-sensitive industrial control where deterministic dual-networking is non-negotiable.

Availability

R5F571MLHDFB#30 is available at Aetrix Electronics and suitable for industrial PLC controllers, smart energy gateways, factory HMIs, and medical diagnostic interfaces requiring stable component supply across extended product lifecycles.

Supply support for R5F571MLHDFB#30 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 RX71M Group is designed for high-performance industrial automation applications demanding real-time Ethernet, functional safety, and secure connectivity - with R5F571MLHDFB#30 representing its top-tier 176-pin configuration.

FAQ

What is the maximum operating frequency and DMIPS rating of the R5F571MLHDFB#30?

The R5F571MLHDFB#30 operates at a maximum frequency of 240 MHz and delivers 480 DMIPS (Dhrystone MIPS) performance. This is achieved through its RXv2 CPU core with 5-stage pipeline, single-cycle 32×32 multiply, and ultra-compact variable-length instruction set. The R5F571MLHDFB#30 maintains this performance across its full voltage range (2.7–3.6 V) and temperature range (–40°C to +85°C).

Does the R5F571MLHDFB#30 support IEEE 1588 Precision Time Protocol?

Yes, the R5F571MLHDFB#30 includes a dedicated PTP controller (EPTPCa) compliant with IEEE 1588-2008. It provides hardware timestamping for Ethernet frames with sub-100 ns resolution, supports Pdelay_Req/Pdelay_Resp message handling, and integrates with the dual Ethernet MACs (ETHERC) for transparent clock operation. This capability is essential for R5F571MLHDFB#30-based industrial controllers requiring sub-microsecond synchronization across distributed nodes.

How many Ethernet MAC interfaces does the R5F571MLHDFB#30 integrate?

The R5F571MLHDFB#30 integrates two independent IEEE 802.3-compliant Ethernet MAC interfaces, each supporting 10/100 Mbps full/half-duplex operation with MII or RMII PHY interface options. Each MAC has dedicated resources including separate EDMAC channels, transmit/receive FIFOs (2 KB TX / 4 KB RX per channel), and hardware-assisted IEEE 1588 timestamping - enabling concurrent protocol stacks such as EtherCAT and PROFINET on the R5F571MLHDFB#30.

What are the flash and RAM capacities of the R5F571MLHDFB#30?

The R5F571MLHDFB#30 features 4 MB of on-chip code flash memory with adaptive fetch unit (AFU) for zero-wait access up to 120 MHz, and 512 KB of SRAM divided into 256 KB of no-wait region (0000_0000h–0003_FFFFh) and 256 KB of conditional-wait region. Additionally, it includes 32 KB of ECC-protected RAM and 8 KB of battery-backed standby RAM - all verified in the R5F571MLHDFB#30 datasheet Rev.1.20.

Which communication interfaces are supported by the R5F571MLHDFB#30 for industrial protocols?

The R5F571MLHDFB#30 supports CAN v2.0B (3 channels, 32 mailboxes each), multiple SCI/SCIFA interfaces (9 total with LIN/UART/SPI/I²C emulation), RSPIa (2 channels), QSPI (1 channel), and dual Ethernet MACs - enabling native implementation of Modbus TCP, CANopen, DeviceNet, EtherCAT, and PROFINET. Its R5F571MLHDFB#30-specific peripheral set eliminates need for external protocol accelerators in industrial gateway designs.