Renesas R5F571MJHGFB#V0

Overview

R5F571MJHGFB#V0 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. It targets industrial automation controllers requiring deterministic real-time networking, secure firmware updates, and high-resolution analog sensing.

For engineers reviewing the R5F571MJHGFB#V0 datasheet, R5F571MJHGFB#V0 pinout, R5F571MJHGFB#V0 application, or R5F571MJHGFB#V0 equivalent, key selection criteria include its 177-pin TFLGA package (8 mm × 8 mm, 0.5-mm pitch), dual-channel Ethernet with PTP timestamping, high-speed USB 2.0 host/function with battery charging support, and IEC60730 safety features including CRC, oscillation-stop detection, and A/D self-diagnosis.

Technical Context

The R5F571MJHGFB#V0 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 MACs (ETHERC) with dedicated EPTPC for IEEE 1588-2008 timestamping and EDMAC with 3 DMA channels-two for ETHERC and one for EPTPC-to offload frame processing from the CPU.

Its clock system combines external crystal input (8–24 MHz), internal HOCO (16/18/20 MHz), LOCO (240 kHz), and PLL for flexible domain partitioning: ICLK up to 240 MHz for CPU, PCLKA up to 120 MHz for Ethernet/USB/AES, and PCLKB up to 60 MHz for timers/peripherals. The device supports four low-power modes and battery-backed RTC operation via VBATT.

Key Specifications

Pinout & Package

Package: TFLGA-177 (PTLG0177KA-A), 8 mm × 8 mm, 0.5-mm pitch, 127 general-purpose I/O pins with 5-V tolerance on 19 pins, open-drain capability, and programmable pull-up resistors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F571MLHDFB#V0, the R5F571MJHGFB#V0 provides critical high-speed USB 2.0 with battery charging and full 4 MB flash for complex protocol stacks, while R5F572MLHDFB#V0 trades pin compatibility for TSN and 400 MHz performance at the cost of mechanical redesign.

Availability

R5F571MJHGFB#V0 is available at Aetrix Electronics and suitable for industrial automation controllers, smart energy gateways, medical infusion pumps, and building automation systems requiring stable component supply across long production lifecycles.

Supply support for R5F571MJHGFB#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 solutions for automotive, industrial, and IoT markets.

The RX71M Group is designed for real-time industrial control applications demanding high-performance deterministic processing, integrated networking (Ethernet/USB/CAN), functional safety, and secure firmware execution.

FAQ

What is the maximum operating frequency and CPU performance of the R5F571MJHGFB#V0?

The R5F571MJHGFB#V0 operates at a maximum system clock frequency of 240 MHz using its RXv2 CPU core, achieving 480 DMIPS performance. Its single-precision IEEE-754 floating-point unit and dual multiply-accumulate units enable efficient signal processing and control algorithm execution. This performance level allows the R5F571MJHGFB#V0 to handle real-time tasks such as servo motor control loops and Ethernet packet processing within strict timing budgets.

Does the R5F571MJHGFB#V0 support IEEE 1588 Precision Time Protocol?

Yes, the R5F571MJHGFB#V0 includes a dedicated IEEE 1588-2008 compliant PTP controller (EPTPCa) tightly coupled to its dual Ethernet MACs. It supports hardware timestamping of ingress and egress frames with nanosecond resolution, enabling sub-microsecond synchronization in industrial Ethernet networks. This capability is integral to the R5F571MJHGFB#V0's role in time-sensitive applications like coordinated motion control and distributed I/O systems.

What USB capabilities does the R5F571MJHGFB#V0 provide?

The R5F571MJHGFB#V0 integrates two USB modules: USBAa supporting high-speed (480 Mbps) host/function operation with Battery Charging Specification 1.2 compliance, and USBb supporting full-speed (12 Mbps) host/function with OTG. The USBAa module includes 8.5 KB of dedicated RAM buffer and eliminates need for external pull-up/pull-down resistors. These features make the R5F571MJHGFB#V0 ideal for field-serviceable devices requiring firmware updates and peripheral attachment via USB.

How does the R5F571MJHGFB#V0 support functional safety standards like IEC60730?

The R5F571MJHGFB#V0 incorporates multiple hardware features for IEC60730 Class B compliance, including oscillation-stoppage detection, built-in CRC calculation unit, independent watchdog timer (IWDTa), self-diagnostic function for the A/D converter, and register write protection. These capabilities allow developers to implement safety mechanisms without external components, reducing certification effort for household appliances and industrial equipment where the R5F571MJHGFB#V0 serves as the primary controller.

What are the memory resources available on the R5F571MJHGFB#V0?

The R5F571MJHGFB#V0 provides 4 MB of on-chip code flash memory with zero wait states up to 120 MHz, 64 KB of reprogrammable data flash rated for 100,000 erase cycles, 512 KB of SRAM (with 256 KB accessible at full 240 MHz speed), 32 KB of ECC-protected RAM, and 8 KB of battery-backed standby RAM. This memory hierarchy supports complex real-time OS environments, secure boot partitions, and reliable data logging-all within the R5F571MJHGFB#V0's single-chip solution.