Renesas R5F5671EHDBP#20

Overview

R5F5671EHDBP#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 updates.

For engineers reviewing the R5F5671EHDBP#20 datasheet, R5F5671EHDBP#20 pinout, R5F5671EHDBP#20 application, or R5F5671EHDBP#20 equivalent, key selection criteria include its 144-pin LFQFP package (PLQP0144KA-B), 120-MHz deterministic real-time performance, TSIP-based AES256/SHA256 encryption, IEC60730-compliant self-test features, and hardware-accelerated remote control signal reception for IR-based user interfaces.

Technical Context

The R5F5671EHDBP#20 implements the RXv3 CPU core with 16×32-bit general-purpose registers, double-precision FPU (16×64-bit data registers), and collective register bank save for fast context switching. Its clock system supports independent domain scaling: ICLK up to 120 MHz for CPU/QSPIX, PCLKA up to 120 MHz for MTU/RSPI/RIICHS, and PCLKB up to 60 MHz for most peripherals including S12AD units.

It integrates three distinct DMA controllers - DMACAb (8-channel), EXDMACa (2-channel), and DTCb (1-channel) - enabling concurrent background transfers across flash, SRAM, and peripheral FIFOs without CPU intervention. The ELC (Event Link Controller) provides 99 internal event signals for hardware-triggered timer starts, A/D conversions, and PWM updates, eliminating software latency in time-critical control loops.

Key Specifications

Pinout & Package

Package: PLQP0144KA-B, 144-pin LQFP, 20 × 20 mm, 0.50-mm pitch, RoHS compliant, lead-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5671EHDBP#20, the R5F566TEHDFP#30 sacrifices security, serial flash boot, and IR reception for lower cost and footprint, while the R5F572MHDFP#30 trades SDHI and REMC for Ethernet and higher clock speed - making R5F5671EHDBP#20 optimal for secure, media-rich, IR-responsive edge devices.

Availability

R5F5671EHDBP#20 is available at Aetrix Electronics and suitable for industrial HMI, smart metering, home appliance gateways, and motor control edge nodes requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F5671EHDBP#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 Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX671 Group, including R5F5671EHDBP#20, was designed for high-integrity industrial applications demanding real-time performance, functional safety (IEC60730), secure firmware execution, and rich peripheral integration - especially where touch, IR, SD, and CAN coexist in space-constrained designs.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F5671EHDBP#20?

The R5F5671EHDBP#20 operates at a maximum frequency of 120 MHz and achieves 707 CoreMark in benchmark testing. This performance stems from its RXv3 CPU core with optimized pipeline, double-precision FPU, and zero-wait-state access to 384 KB SRAM. The R5F5671EHDBP#20 delivers deterministic real-time response for control-intensive applications such as motor drives and industrial PLCs.

Does the R5F5671EHDBP#20 support secure boot and cryptographic acceleration?

Yes, the R5F5671EHDBP#20 integrates Trusted Secure IP (TSIP) supporting AES128/192/256, RSA, ECC, SHA256, MD5, and a true random number generator (TRNG). It enables secure boot, encrypted firmware updates, and runtime cryptographic operations without software overhead. The R5F5671EHDBP#20 meets IEC60730 Class B requirements through hardware-enforced key protection and memory access controls.

What package type and pin count does the R5F5671EHDBP#20 use?

The R5F5671EHDBP#20 uses the PLQP0144KA-B package: a 144-pin LQFP with 20 × 20 mm body size and 0.50-mm pitch. It provides 113 general-purpose I/O pins with 5-V tolerance, programmable pull-up, open-drain capability, and configurable drive strength. This package balances board area, thermal performance, and routing simplicity for industrial PCB layouts.

Can the R5F5671EHDBP#20 execute code directly from external serial flash memory?

Yes, the R5F5671EHDBP#20 includes a Quad-SPI memory interface (QSPIX) that supports fetching instructions directly from external SPI-compatible flash memory. It supports extended SPI, dual-SPI, and quad-SPI protocols with selectable address widths (8–32 bits), enabling XIP (execute-in-place) operation for flexible boot and firmware storage. This capability is fully supported in the R5F5671EHDBP#20's hardware and toolchain.

What low-power modes and backup capabilities does the R5F5671EHDBP#20 offer?

The R5F5671EHDBP#20 supports four low-power modes - Sleep, All-module Clock Stop, Software Standby, and Deep Software Standby - with typical current as low as 0.5 µA in deep standby. It includes a VBATT pin to maintain RTC, backup registers, and sub-clock oscillator during main power loss. The R5F5671EHDBP#20 also features low-voltage detection (LVD) circuits with configurable thresholds for system-level brown-out protection.