Renesas R5F571MLCDBG#20

Overview

R5F571MLCDBG#20 from Renesas is a 32-bit RXv2 core microcontroller operating at up to 240 MHz, delivering 480 DMIPS with integrated single-precision IEEE-754 FPU, 4 MB on-chip code flash, 512 KB SRAM (including 32 KB ECC RAM), and IEEE 1588-compliant dual Ethernet MAC - designed for industrial real-time control, networked gateway, and secure edge node applications.

For engineers reviewing the R5F571MLCDBG#20 datasheet, R5F571MLCDBG#20 pinout, R5F571MLCDBG#20 application, or R5F571MLCDBG#20 equivalent, key selection criteria include its 176-pin LFBGA package (PLQP0176KB-A), dual Ethernet + high-speed USB 2.0 + CAN triple-channel support, 240-MHz deterministic real-time performance, and IEC60730 safety features including CRC, IWDTa, and A/D self-diagnostic capability.

Technical Context

The R5F571MLCDBG#20 implements the RXv2 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates dual independent DMA controllers (DMACAa: 8 channels; EXDMACa: 2 channels) and a dedicated Ethernet DMA (EDMACa: 3 channels) to offload CPU bandwidth during high-throughput network transfers.

Its clock system supports simultaneous domain-specific frequencies: ICLK up to 240 MHz for CPU execution, PCLKA up to 120 MHz for Ethernet/USB/AES, and PCLKB up to 60 MHz for timers/peripherals - enabling precise timing isolation across real-time, communication, and safety-critical subsystems.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin Low-Profile Fine-Pitch Ball Grid Array (LFBGA), 24 mm × 24 mm, 0.5 mm 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 R5F571MLHDFB#30, the R5F571MLCDBG#20 delivers full dual-Ethernet + IEEE 1588 + HS USB capability in the same 176-pin footprint; versus R5F566TKEDFP#30, it prioritizes deterministic network timing and security over motor PWM specialization - making it optimal for converged industrial gateways and safety-certified edge nodes.

Availability

R5F571MLCDBG#20 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, smart grid data concentrators, programmable logic controllers, and medical infusion pump controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F571MLCDBG#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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The RX71M Group - including the R5F571MLCDBG#20 - was engineered specifically for industrial real-time control with integrated IEEE 1588 Ethernet, functional safety features, and deterministic 240-MHz performance - targeting Industry 4.0 infrastructure and secure edge intelligence.

FAQ

What is the maximum operating frequency and DMIPS rating of the R5F571MLCDBG#20?

The R5F571MLCDBG#20 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-bit multiply, and dual MAC units - enabling hard real-time task execution in industrial control loops and protocol stacks without external co-processors.

Does the R5F571MLCDBG#20 support IEEE 1588 Precision Time Protocol, and how is it implemented?

Yes, the R5F571MLCDBG#20 includes a dedicated PTP controller (EPTPCa) tightly coupled to its dual Ethernet MAC. It performs hardware timestamping of ingress/egress Ethernet frames with sub-microsecond resolution, supports PTP master/slave roles, and synchronizes local clocks to grandmaster time - all without CPU overhead, making it ideal for time-sensitive networking in industrial automation.

What package type and pin count does the R5F571MLCDBG#20 use?

The R5F571MLCDBG#20 uses the PLQP0176KB-A package: a 176-pin Low-Profile Fine-Pitch Ball Grid Array measuring 24 mm × 24 mm with 0.5 mm pitch. It provides 127 general-purpose I/O pins, including 19 5-V tolerant inputs, and is optimized for thermal dissipation in industrial environments up to +85°C.

How many Ethernet MAC interfaces does the R5F571MLCDBG#20 integrate, and what PHY interfaces are supported?

The R5F571MLCDBG#20 integrates two fully independent IEEE 802.3-compliant Ethernet MACs, each supporting 10/100 Mbps in full- and half-duplex modes. It supports both MII (Media Independent Interface) and RMII (Reduced MII) PHY connections - allowing flexible PHY selection while maintaining hardware timestamping and cut-through frame forwarding between channels.

What safety and security features are built into the R5F571MLCDBG#20 for industrial certification?

The R5F571MLCDBG#20 includes IEC60730 Class B compliance features: oscillation-stop detection, hardware CRC generator, independent watchdog timer (IWDTa) with windowed refresh, A/D converter self-diagnostic, and register write protection. Optional AES/DES/SHA crypto acceleration supports secure boot and encrypted communications - enabling certification for UL 60730, IEC 61508, and IEC 62443.