Renesas R5F571MJHDLC#20

Overview

R5F571MJHDLC#20 from Renesas is a 32-bit RXv2 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 - deployed in industrial gateways requiring deterministic real-time networking, secure firmware updates, and multi-protocol fieldbus interfacing.

For engineers reviewing the R5F571MJHDLC#20 datasheet, R5F571MJHDLC#20 pinout, R5F571MJHDLC#20 application, or R5F571MJHDLC#20 equivalent, this MCU supports IEC60730 safety compliance, hardware-accelerated AES/SHA encryption, dual USB (HS + FS with battery charging), CAN FD-capable ISO 11898-1 interfaces, and configurable low-power modes for edge node deployment where timing-critical control and secure connectivity coexist.

Technical Context

The R5F571MJHDLC#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 Ethernet controllers with IEEE 1588 PTP timestamping via EPTPCa and dedicated EDMACa channels - supporting cut-through frame transfer between channels and Magic Packet™ wake-on-LAN.

Its clock system combines external crystal oscillators (8–24 MHz), internal HOCO (16/18/20 MHz), LOCO (240 kHz), and PLL-based frequency synthesis to independently drive ICLK (up to 240 MHz), PCLKA (up to 120 MHz for Ethernet/USB/AES), and PCLKB (up to 60 MHz for timers/ADC). The device uses separate power domains for VCC/AVCC0/AVCC1 and VBATT-backed RTC operation.

Key Specifications

Pinout & Package

LFBGA-176 package (PLQP0176KB-A) with 0.5 mm pitch, 24 mm × 24 mm footprint, and 127 general-purpose I/O pins (19 with 5-V tolerance, all with pull-up and open-drain capability).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F571MJHDLC#20, the LQFP alternatives offer smaller footprints and lower pin counts but sacrifice dual Ethernet, high-speed USB, and maximum flash capacity - making them appropriate for derivative designs where network redundancy and peripheral headroom are relaxed.

Availability

R5F571MJHDLC#20 is available at Aetrix Electronics and suitable for industrial gateways, smart energy meters, building automation controllers, and medical infusion pumps requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical deployments.

Supply support for R5F571MJHDLC#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX71M Group - including R5F571MJHDLC#20 - was designed for high-performance industrial automation, where deterministic real-time control, secure connectivity, and functional safety certification (IEC60730) are mandatory.

FAQ

What is the maximum operating frequency and DMIPS performance of the R5F571MJHDLC#20?

The R5F571MJHDLC#20 operates at a maximum frequency of 240 MHz and delivers 480 DMIPS of processing performance. This is achieved through the RXv2 CPU core's 5-stage pipeline, single-cycle 32×32-bit multiply, and dual MAC units. Its performance enables real-time execution of multiple industrial protocol stacks - such as EtherCAT master, PROFINET IRT, and CANopen - without external co-processors. The R5F571MJHDLC#20 sustains this throughput while maintaining low power consumption (0.2 mA/MHz typical).

Does the R5F571MJHDLC#20 support IEEE 1588 Precision Time Protocol, and how is it implemented?

Yes, the R5F571MJHDLC#20 supports IEEE 1588-2008 via its integrated EPTPCa (PTP Controller for Ethernet) block, which provides hardware timestamping for ingress and egress Ethernet frames. Timestamps are captured at the MAC layer with sub-microsecond resolution and synchronized to the system clock. The R5F571MJHDLC#20 also includes dedicated EDMACa channels and cut-through frame transfer between its dual Ethernet MACs - enabling deterministic PTP slave/master operation in time-sensitive networking applications like industrial motion control.

What security features does the R5F571MJHDLC#20 include for firmware protection and cryptographic operations?

The R5F571MJHDLC#20 includes optional hardware accelerators for AES-128/192/256, DES/T-DES, SHA-1/224/256, and HMAC, plus a CRC calculation unit and memory protection unit (MPU). Trusted Memory (TM) blocks 8–9 prevent external read-out of critical firmware sections. Register write protection safeguards configuration registers against accidental or malicious overwrite. These features collectively support secure boot, authenticated OTA updates, and IEC62443-compliant device identity management - all essential for protecting the R5F571MJHDLC#20 in connected industrial systems.

How many Ethernet MAC interfaces does the R5F571MJHDLC#20 provide, and what PHY interfaces are supported?

The R5F571MJHDLC#20 integrates two independent IEEE 802.3-compliant Ethernet MAC controllers, each supporting 10/100 Mbps in full- and half-duplex modes. It supports both MII and RMII physical layer interfaces - with MII requiring 18 signal lines (ETXD[3:0], ERXD[3:0], ETX_EN, ETX_CLK, ERX_DV, ERX_CLK, etc.) and RMII reducing pin count via clock sharing. The R5F571MJHDLC#20 does not include integrated PHYs; external PHY ICs (e.g., DP83848, LAN8720) must be used, connected via MII/RMII signals routed from the LFBGA-176 package.

What is the package type and thermal specification of the R5F571MJHDLC#20?

The R5F571MJHDLC#20 is housed in a PLQP0176KB-A LFBGA package: 176-pin, 24 mm × 24 mm body, 0.5 mm ball pitch, with exposed thermal pad. It is rated for industrial temperature range (–40°C to +85°C), designated as the D-version. The package supports standard reflow profiles and provides robust thermal dissipation for sustained 240 MHz operation - validated under worst-case ambient conditions with appropriate PCB copper pour and thermal vias beneath the exposed pad.