Renesas R5F571MJCDLK#20

Overview

R5F571MJCDLK#20 from Renesas is a 32-bit RXv2 core MCU 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, CAN (3 channels), and dual 12-bit A/D converters (29 total channels). It targets industrial networking gateways requiring deterministic real-time control, secure firmware updates, and multi-protocol connectivity.

For engineers reviewing the R5F571MJCDLK#20 datasheet, R5F571MJCDLK#20 pinout, R5F571MJCDLK#20 application, or R5F571MJCDLK#20 equivalent, key selection criteria include its 177-pin TFLGA package (8 × 8 mm, 0.5-mm pitch), dual Ethernet + USB HS + CAN coexistence, 240-MHz real-time performance with FPU, and IEC60730 safety support for functional safety certification.

Technical Context

The R5F571MJCDLK#20 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code density. Its clock system integrates PLL, HOCO (16/18/20 MHz), LOCO (240 kHz), and IWDT-dedicated oscillator, with independent domain clocks (ICLK up to 240 MHz, PCLKA up to 120 MHz, PCLKB up to 60 MHz) enabling precise peripheral timing isolation.

It supports hardware-assisted safety via oscillation-stop detection, CRC calculation unit, self-diagnostic A/D, register write protection, and memory protection unit (MPU). The ELC (Event Link Controller) enables 119 internal event interlinks-eliminating CPU intervention for timer-triggered A/D conversion, PWM dead-time compensation, or RTC time-capture on external events.

Key Specifications

Pinout & Package

Package: TFLGA-177 (PTLG0177KA-A), 8 × 8 mm body, 0.5-mm pitch, 177-terminal fine-pitch land grid array with exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F571MLDFP#30 and R7FA6M2AF3CFP#AA0, the R5F571MJCDLK#20 delivers unique value in synchronized industrial networking: only it combines dual IEEE 1588 Ethernet, USB 2.0 HS with battery charging, and 240-MHz deterministic processing in an 8 × 8 mm package-enabling compact, feature-rich edge gateways without external co-processors.

Availability

R5F571MJCDLK#20 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, smart energy metering hubs, factory automation PLCs, medical infusion pumps, and secure IoT edge controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F571MJCDLK#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 is designed specifically for industrial networking and real-time control applications demanding high performance, functional safety, and multi-protocol connectivity-including IEEE 1588, CAN, USB, and Ethernet-within strict power and footprint constraints.

FAQ

What is the maximum operating frequency and DMIPS rating of the R5F571MJCDLK#20?

The R5F571MJCDLK#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 integrated single-precision IEEE-754 floating-point unit. The R5F571MJCDLK#20 sustains this performance with zero-wait-state access to code flash at ≤120 MHz and optimized instruction fetch architecture.

Does the R5F571MJCDLK#20 support IEEE 1588 Precision Time Protocol hardware acceleration?

Yes, the R5F571MJCDLK#20 integrates a dedicated PTP controller (EPTPCa) compliant with IEEE 1588-2008, directly connected to both Ethernet MACs. It provides hardware timestamping of ingress/egress Ethernet frames with sub-microsecond resolution, enabling master/slave clock synchronization without CPU intervention. This capability is intrinsic to the R5F571MJCDLK#20 silicon and requires no external timing ICs.

What package type and pin count does the R5F571MJCDLK#20 use?

The R5F571MJCDLK#20 uses a 177-pin TFLGA package (PTLG0177KA-A), measuring 8 × 8 mm with 0.5-mm pitch. It provides 127 general-purpose I/O pins (19 of which are 5-V tolerant), along with dedicated power, ground, clock, reset, and high-speed interface signals (Ethernet, USB HS, CAN). This fine-pitch land grid array enables compact PCB layouts for space-constrained industrial edge devices.

How many Ethernet MAC interfaces does the R5F571MJCDLK#20 include, and what standards do they support?

The R5F571MJCDLK#20 includes two fully independent IEEE 802.3-compliant Ethernet MAC interfaces, each supporting 10/100 Mbps operation in full- and half-duplex modes. Both MACs integrate MII/RMII physical layer interfaces and are paired with the EPTPCa module for IEEE 1588-2008 hardware timestamping. They support Magic Packet™ wake-on-LAN, IEEE 802.3x flow control, and multicast filtering-all implemented in the R5F571MJCDLK#20 die without external PHYs.

Is the R5F571MJCDLK#20 qualified for functional safety standards like IEC 60730?

Yes, the R5F571MJCDLK#20 includes multiple hardware features certified for IEC 60730 Class B compliance: oscillation-stop detection, built-in CRC calculation unit, A/D converter self-diagnostic mode, register write protection, and memory protection unit (MPU). These are documented in the R01DS0249EJ0120 datasheet and enable developers to implement safety-critical functions-such as motor stall detection or sensor fault monitoring-without external safety monitors. The R5F571MJCDLK#20 itself is not pre-certified, but its features form the foundation for certified system-level implementations.