Renesas R5F571MLDDFB#V0

Overview

R5F571MLDDFB#V0 from Renesas is a 32-bit RXv2 core microcontroller operating at up to 240 MHz (480 DMIPS), featuring 4 MB on-chip code flash, 512 KB SRAM, IEEE 1588-compliant dual Ethernet MAC, high-speed USB 2.0 with battery charging, CAN v2.0B (3 channels), and dual 12-bit A/D converters (29 total channels). It targets industrial automation controllers requiring deterministic real-time networking, secure firmware updates, and multi-protocol fieldbus connectivity.

For engineers reviewing the R5F571MLDDFB#V0 datasheet, R5F571MLDDFB#V0 pinout, R5F571MLDDFB#V0 application, or R5F571MLDDFB#V0 equivalent, key selection criteria include dual Ethernet PTP timing accuracy, integrated USB HS PHY for host/device/OTG operation, 240-MHz deterministic interrupt latency, and IEC 60730 safety support including CRC, oscillation-stop detection, and A/D self-diagnostic.

Technical Context

The R5F571MLDDFB#V0 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates dual Ethernet MACs with IEEE 1588 PTP hardware timestamping and EPTPC acceleration, plus dedicated EDMAC channels (3) for zero-copy frame handling.

Its clock system combines external crystal (8–24 MHz), internal HOCO (16/18/20 MHz), and PLL to generate independent clocks: ICLK (240 MHz), PCLKA (120 MHz for Ethernet/USB/AES), PCLKB (60 MHz for timers/I/O), and PCLKC/PCLKD (60 MHz for A/D units). The device supports four low-power modes with RTC backup via VBATT and deep software standby with 8 KB retention RAM.

Key Specifications

Pinout & Package

LFBGA-176 package (PLQP0176KB-A), 24 × 24 mm, 0.5 mm pitch, with 127 general-purpose I/O pins, 19 of which are 5-V tolerant. Pin functions include dual Ethernet MII/RMII interfaces, USB HS differential pairs, CANH/CANL, QSPI, SDHI, and parallel camera interface (PDC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F571MLDDFB#V0, the R5F571MLDDFP#V0 offers identical performance in a more manufacturable LQFP package, while R5F571MLDDFC#V0 extends thermal operation to +105°C - both retain full pin compatibility and firmware interchangeability without hardware modification.

Availability

R5F571MLDDFB#V0 is available at Aetrix Electronics and suitable for industrial PLCs, smart energy gateways, factory HMIs, and medical diagnostic devices requiring stable component supply across multi-year production cycles.

Supply support for R5F571MLDDFB#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 is a global semiconductor leader specializing in microcontrollers, analog, and power management solutions for industrial, automotive, and IoT markets.

The RX71M Group is designed for high-performance industrial automation applications demanding real-time Ethernet, functional safety, and secure connectivity - positioning R5F571MLDDFB#V0 as a deterministic control hub for Industry 4.0 edge nodes.

FAQ

What is the maximum operating frequency and DMIPS rating of the R5F571MLDDFB#V0?

The R5F571MLDDFB#V0 operates at a maximum frequency of 240 MHz and delivers 480 DMIPS performance. This is achieved through its RXv2 CPU core with 5-stage pipeline, single-cycle 32-bit multiply, and dual MAC units. The R5F571MLDDFB#V0 maintains this performance across its full voltage range (2.7–3.6 V) and temperature range (–40°C to +85°C), making it suitable for demanding real-time control applications where deterministic execution is critical.

Does the R5F571MLDDFB#V0 support IEEE 1588 Precision Time Protocol hardware timestamping?

Yes, the R5F571MLDDFB#V0 integrates a dedicated IEEE 1588-compliant PTP controller (EPTPCa) tightly coupled to its dual Ethernet MACs. This hardware block captures precise timestamps on packet ingress/egress with sub-50 ns accuracy, independent of CPU load. The R5F571MLDDFB#V0 uses this capability to synchronize distributed motion axes in industrial networks without software-induced jitter - a key requirement for coordinated robotics and CNC systems.

How many Ethernet MAC interfaces does the R5F571MLDDFB#V0 provide, and what physical layer options are supported?

The R5F571MLDDFB#V0 features two independent Ethernet MAC controllers compliant with IEEE 802.3, supporting both MII and RMII physical layer interfaces at 10/100 Mbps. Each MAC has dedicated EDMAC channels (3 total) and integrated PTP timestamping. The R5F571MLDDFB#V0 does not include integrated PHYs - external PHYs must be used, but the MACs support standard MII/RMII signaling for flexible PHY selection including automotive-grade or industrial-isolated variants.

What is the flash and RAM configuration of the R5F571MLDDFB#V0, and how is memory partitioned for safety-critical use?

The R5F571MLDDFB#V0 includes 4 MB of on-chip code flash memory with background programming capability, 512 KB of general SRAM (256 KB no-wait at 240 MHz), 64 KB of data flash rated for 100,000 write cycles, and 32 KB of ECC-protected RAM. Memory is partitioned with MPU support and trusted memory blocks (flash blocks 8–9) that prevent external readout - essential for securing bootloader and cryptographic keys in the R5F571MLDDFB#V0.

Which safety standards does the R5F571MLDDFB#V0 support out-of-the-box for industrial certification?

The R5F571MLDDFB#V0 includes hardware features required for IEC 60730 Class B compliance: oscillation-stop detection, hardware CRC calculation unit, independent watchdog timer (IWDTa) with window function, A/D converter self-diagnostic mode, and register write protection. These capabilities allow the R5F571MLDDFB#V0 to meet functional safety requirements for industrial controllers without external safety monitors - reducing system complexity and bill-of-materials cost.