Renesas R5F571MJHDLK#20

Overview

R5F571MJHDLK#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 ECCRAM), and dual 12-bit A/D converters (8 + 21 channels). It serves as a high-performance control and connectivity hub in industrial Ethernet gateways requiring IEEE 1588 time synchronization, CAN bus interfacing, and USB 2.0 HS host functionality.

For engineers reviewing the R5F571MJHDLK#20 datasheet, R5F571MJHDLK#20 pinout, R5F571MJHDLK#20 application, or R5F571MJHDLK#20 equivalent, this MCU is evaluated for real-time deterministic control, secure firmware updates via AES-256, low-power operation down to 0.2 mA/MHz, and functional safety compliance per IEC 60730.

Technical Context

The R5F571MJHDLK#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 clock domains: ICLK up to 240 MHz for CPU execution and PCLKA up to 120 MHz for Ethernet MAC, USB, CAN, and RSPI peripherals - enabling concurrent high-speed communication and deterministic real-time processing.

Its memory subsystem includes 4 MB code flash with background programming/erasing (BGO), 64 KB data flash rated for 100,000 write/erase cycles, and segmented SRAM with region-specific wait-state behavior - 256 KB accessible at full 240 MHz, while the upper 256 KB incurs one wait state above 120 MHz. The device supports IEEE 1588 PTP via dedicated EPTPC hardware linked to ETHERC and MTU3 timers for sub-microsecond timestamp accuracy.

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 supporting 5-V tolerance, open-drain output, and programmable pull-up resistors.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance industrial MCU applications.

Compared with R5F571MJHDLK#20, the R5F571MLHDFP#30 offers identical core architecture and safety features in a smaller footprint but sacrifices dual Ethernet and USB 2.0 HS - making it ideal for cost-optimized I/O concentrators. The R5F572MHGDFP#30 shifts focus toward graphical UI performance at the expense of IEEE 1588 PTP hardware, limiting its suitability for time-sensitive networking roles.

Availability

R5F571MJHDLK#20 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, smart energy metering hubs, programmable logic controller CPU modules, and medical infusion pump controllers requiring stable component supply across long-lifecycle production programs.

Supply support for R5F571MJHDLK#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 R5F571MJHDLK#20 - was designed specifically for industrial automation and networked control systems demanding real-time determinism, functional safety, and multi-protocol connectivity in a single chip.

FAQ

What is the maximum operating frequency and DMIPS rating of the R5F571MJHDLK#20?

The R5F571MJHDLK#20 operates at a maximum system clock 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-bit multiply, and dual MAC units - enabling real-time control loops and protocol stack processing in industrial gateways without external accelerators.

Does the R5F571MJHDLK#20 support IEEE 1588 Precision Time Protocol hardware acceleration?

Yes, the R5F571MJHDLK#20 includes a dedicated PTP controller (EPTPCa) tightly coupled to its dual Ethernet MAC (ETHERC) and MTU3 timers. This hardware block performs timestamp insertion and extraction on Ethernet frames with sub-microsecond accuracy - essential for time-sensitive networking in industrial automation and power distribution systems.

What package type and pin count does the R5F571MJHDLK#20 use?

The R5F571MJHDLK#20 uses a 176-pin LFBGA package (PLQP0176KB-A) measuring 24 mm × 24 mm with 0.5 mm pitch. It provides 127 general-purpose I/O pins, including 19 with 5-V tolerance, and supports multiple low-power modes - making it suitable for dense industrial control PCB layouts requiring high peripheral integration.

How many A/D converter channels does the R5F571MJHDLK#20 include, and what resolution options are available?

The R5F571MJHDLK#20 integrates two independent 12-bit A/D converters: S12ADC unit 0 with 8 channels and unit 1 with 21 channels. Resolution is software-selectable at 8-, 10-, or 12-bit levels, with minimum conversion times of 0.42 µs (8-bit), 0.45 µs (10-bit), and 0.48 µs (12-bit) - supporting high-fidelity sensor acquisition in energy metering and motor control applications.

Is the R5F571MJHDLK#20 qualified for functional safety standards like IEC 60730?

Yes, the R5F571MJHDLK#20 includes multiple hardware features certified for IEC 60730 Class B compliance: oscillation-stop detection, built-in CRC calculation unit, independent watchdog timer (IWDTa) with configurable windowing, A/D converter self-diagnostic, and register write protection. These capabilities reduce software validation burden for household and industrial appliances requiring safety certification.