Renesas R5F5671EHDLK#20

Overview

R5F5671EHDLK#20 from Renesas is a 32-bit RXv3 microcontroller operating at up to 120 MHz, featuring double-precision IEEE-754 FPU, 2 MB on-chip code flash with dual-bank support, 384 KB SRAM, and integrated CAN, USB 2.0 FS, SD host interface, QSPIX, and capacitive touch sensing - deployed in industrial HMI and smart metering systems requiring real-time control and secure firmware execution.

For engineers reviewing the R5F5671EHDLK#20 datasheet, R5F5671EHDLK#20 pinout, R5F5671EHDLK#20 application, or R5F5671EHDLK#20 equivalent, key selection considerations include its 144-pin LFQFP package (PLQP0144KA-B), -40°C to +85°C temperature grade (D-version), TSIP-based AES256/SHA256 encryption, and 12-bit dual A/D converter with self-diagnostic capability.

Technical Context

The R5F5671EHDLK#20 implements the RXv3 CPU core with 113 instructions, collective register bank save, and memory protection unit (MPU) for IEC60730-compliant safety-critical firmware. Its clock system integrates PLL, sub-clock oscillator (32.768 kHz), and dedicated IWDT 120-kHz oscillator - enabling independent timing domains for PCLKA (up to 120 MHz), PCLKB (up to 60 MHz), and ADCLK (up to 60 MHz).

Peripheral integration includes EXDMACa (2-channel extended DMA), DTCb (1-channel data transfer controller), and ELC (event link controller) for zero-CPU-intervention signal chaining between MTU3a timers, A/D converters, and communication modules - supporting deterministic response in motor control and remote sensing applications.

Key Specifications

Pinout & Package

PLQP0144KA-B is a 144-pin Low-Profile Quad Flat Package with 0.50-mm pitch, 20 × 20 mm body size, and exposed thermal pad. Pin functions are defined per Renesas R01DS0373EJ0120 Rev.1.20, Table 1.2 (page 12), covering VCC/AVCC/VCAP supply rails, 113 general-purpose I/Os (including 20 5-V tolerant), 16 external interrupt inputs (IRQ0–IRQ15), and dedicated peripheral pins for USB, CAN, SDHI, QSPIX, and CTSU.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5671EHDLK#20, the R5F5671EHDFP#30 offers identical architecture in a smaller package but fewer interfaces, while the R5F566TEHDFP#30 trades security and connectivity for higher PWM precision - making R5F5671EHDLK#20 the balanced choice for connected, secure, feature-rich embedded systems.

Availability

R5F5671EHDLK#20 is available at Aetrix Electronics and suitable for industrial HMI, smart metering, home energy gateways, and motor drive controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F5671EHDLK#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 industrial, automotive, and IoT markets.

The RX671 Group, including R5F5671EHDLK#20, was designed for secure, real-time embedded applications demanding high computational throughput, rich connectivity, and functional safety - targeting smart infrastructure and human-machine interface systems.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F5671EHDLK#20?

The R5F5671EHDLK#20 operates at a maximum frequency of 120 MHz and achieves 707 CoreMark points under benchmark conditions. This performance stems from the RXv3 CPU core's optimized pipeline, double-precision FPU, and zero-wait-state access to 384 KB SRAM - enabling deterministic execution of real-time control tasks in the R5F5671EHDLK#20.

Does the R5F5671EHDLK#20 support secure firmware updates and cryptographic operations?

Yes, the R5F5671EHDLK#20 integrates Trusted Secure IP (TSIP) supporting AES128/192/256, SHA256, RSA, ECC, and true random number generation. It enables secure boot, encrypted OTA updates, and key protection - all verified in the R5F5671EHDLK#20 datasheet (R01DS0373EJ0120) Section 1.1 and Chapter 42.

What package type and pin count does the R5F5671EHDLK#20 use?

The R5F5671EHDLK#20 uses the PLQP0144KA-B package: a 144-pin Low-Profile Quad Flat Package with 20 × 20 mm footprint, 0.50-mm pitch, and exposed thermal pad. This package provides 113 general-purpose I/O pins, including 20 with 5-V tolerance - confirmed in Renesas document R01DS0373EJ0120, page 11.

Which communication interfaces are integrated into the R5F5671EHDLK#20?

The R5F5671EHDLK#20 integrates CAN (2 channels, 32 mailboxes each), USB 2.0 Full-Speed (host/function/OTG), SD host interface (1 channel, 4-bit bus), QSPIX (1 channel, quad-SPI fetch), three I²C interfaces (RIIC/RIICHS), and up to 13 SCI channels - all detailed in R01DS0373EJ0120 Sections 1.1 and Table 1.1.

How does the R5F5671EHDLK#20 handle analog-to-digital conversion and self-diagnosis?

The R5F5671EHDLK#20 features two independent 12-bit A/D converters (S12AD0: 8 channels; S12AD1: 12 channels) with 0.48 µs conversion time, sample-and-hold, and built-in self-diagnostic that injects known reference voltages (VREFL0/VREFH0, AVSS1/AVCC1) to verify linearity and offset - as specified in R01DS0373EJ0120 Section 1.1 and Chapter 35.