Renesas R5F571MFDDBG#20

Overview

R5F571MFDDBG#20 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 (including 32 KB ECC RAM), IEEE 1588-compliant dual Ethernet MAC, high-speed USB 2.0 with battery charging, and dual 12-bit A/D converters - deployed in industrial gateways requiring real-time protocol handling, secure firmware updates, and deterministic network timing.

For engineers reviewing the R5F571MFDDBG#20 datasheet, R5F571MFDDBG#20 pinout, R5F571MFDDBG#20 application, or R5F571MFDDBG#20 equivalent, key selection criteria include IEEE 1588 PTP hardware timestamping accuracy, dual-channel Ethernet DMA channel allocation, 177-pin TFLGA package I/O count (127 GPIO), USB HS + FS coexistence, and flash memory size-dependent peripheral enablement per Renesas R01DS0249EJ0120 Rev.1.20.

Technical Context

The R5F571MFDDBG#20 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and IEEE-754 single-precision FPU - enabling deterministic floating-point control loops in motor drives. Its clock system supports independent domain scaling: ICLK up to 240 MHz for CPU, PCLKA up to 120 MHz for Ethernet/USB/AES, and PCLKB up to 60 MHz for timers/ADC.

Peripheral integration includes dual ETHERC modules with EPTPC (IEEE 1588 v2) and EDMAC (3-channel DMA), USBAa (USB 2.0 HS host/function with 8.5 KB buffer), and S12AD units with self-diagnostic and disconnection detection - all coordinated via Event Link Controller (ELC) for zero-CPU-intervention signal chaining between timers, ADC, and PWM outputs.

Key Specifications

Pinout & Package

Package: PTLG0177KA-A, 177-pin Thin Fine-Pitch Land Grid Array (TFLGA), 8 mm × 8 mm, 0.5 mm pitch, 0.8 mm height, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F571MFDDBG#20, R5F571MLDDFB#30 reduces footprint and cost but sacrifices IEEE 1588 timing, dual Ethernet, and USB HS - making it viable only where those features are unused. R5F566TEADFP#30 trades networking capability for superior motor control peripherals, targeting different system architectures entirely.

Availability

R5F571MFDDBG#20 is available at Aetrix Electronics and suitable for industrial gateways, secure edge controllers, smart energy hubs, and medical data aggregators requiring stable component supply across long-life production cycles.

Supply support for R5F571MFDDBG#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 IoT markets.

The RX71M Group targets high-performance industrial applications demanding real-time determinism, network security, and functional safety - with R5F571MFDDBG#20 optimized for IEEE 1588 time-sensitive networking and secure firmware execution in harsh environments.

FAQ

What is the maximum operating frequency and DMIPS rating of the R5F571MFDDBG#20?

The R5F571MFDDBG#20 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 integrated IEEE-754 floating-point unit - enabling real-time signal processing in applications like motor control and protocol acceleration where deterministic execution matters.

Does the R5F571MFDDBG#20 support IEEE 1588 Precision Time Protocol hardware timestamping?

Yes, the R5F571MFDDBG#20 includes a dedicated EPTPC (Ethernet PTP Controller) block compliant with IEEE 1588-2008 v2. It captures hardware timestamps at Ethernet frame ingress/egress with sub-microsecond resolution, synchronized to the MII/RMII interface - essential for time-sensitive networking in industrial automation and power substations where R5F571MFDDBG#20 serves as a boundary clock or transparent clock node.

How many Ethernet MAC interfaces does the R5F571MFDDBG#20 integrate, and what PHY interfaces are supported?

The R5F571MFDDBG#20 integrates two independent IEEE 802.3-compliant Ethernet MAC modules (ETHERC), each supporting MII or RMII PHY interfaces at 10/100 Mbps full/half-duplex. Both MACs connect to the EPTPC for IEEE 1588 timestamping and share three-channel EDMAC for descriptor-driven packet handling - allowing R5F571MFDDBG#20 to function as a dual-port industrial switch or protocol gateway without external PHY arbitration logic.

What USB capabilities does the R5F571MFDDBG#20 provide, and are high-speed and full-speed modes concurrent?

The R5F571MFDDBG#20 integrates two USB modules: USBAa (USB 2.0 High-Speed host/function with battery charging) and USBb (USB 2.0 Full-Speed host/function). They operate concurrently with independent 8.5 KB and 2 KB RAM buffers - enabling R5F571MFDDBG#20 to act as an HS host for firmware updates while maintaining FS device mode for debug interfaces or peripheral attachment, all without CPU polling overhead.

What is the flash and RAM configuration of the R5F571MFDDBG#20, and how is ECC implemented?

The R5F571MFDDBG#20 includes 4 MB of on-chip code flash memory (with background programming), 512 KB of general-purpose SRAM (256 KB no-wait at 240 MHz), and 32 KB of dedicated ECCRAM with SEC-DED (single error correction/double error detection). This ECCRAM region is hardware-protected and used for critical control structures - ensuring R5F571MFDDBG#20 meets IEC 61508 SIL2 requirements for fault-tolerant industrial firmware execution.