Renesas R5F5671CHDFM#10

Overview

R5F5671CHDFM#10 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, smart metering, and connected appliance control systems.

For engineers reviewing the R5F5671CHDFM#10 datasheet, R5F5671CHDFM#10 pinout, R5F5671CHDFM#10 application, or R5F5671CHDFM#10 equivalent, this page delivers verified specifications, package mapping to PLQP0144KA-B (144-pin LQFP), real-world use cases, and two validated alternative MCUs with documented functional and integration differences.

Technical Context

The R5F5671CHDFM#10 implements the RXv3 CPU core with 113 instructions, 16 general-purpose 32-bit registers, and hardware support for little- or big-endian data arrangement. It integrates a dedicated double-precision FPU with 16×64-bit data registers and 21 processing instructions, enabling deterministic floating-point computation without software emulation.

Its clock system combines an external crystal (8–24 MHz), sub-clock oscillator (32.768 kHz), and internal HOCO/LOCO oscillators, with independent frequency division for ICLK (up to 120 MHz), PCLKA (120 MHz), PCLKB (60 MHz), and ADCLK (60 MHz). The MCU supports IEC60730 Class B compliance via oscillation-stop detection, CRC-A, IWDTa, and A/D self-diagnostic functions.

Key Specifications

Pinout & Package

Package: PLQP0144KA-B - 144-pin Low-profile Quad Flat Package, 20 × 20 mm body, 0.50-mm lead pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5671CHDFM#10, the R5F5670EHDFM#10 offers identical integration and compatibility at reduced memory capacity, while the R5F566TEHDFP#10 trades HMI-focused peripherals for enhanced motor-control timing resources - guiding selection based on firmware footprint and primary system function.

Availability

R5F5671CHDFM#10 is available at Aetrix Electronics and suitable for industrial HMI, smart metering, and home appliance control applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F5671CHDFM#10 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX671 Group is designed for high-performance, secure, and feature-rich industrial and consumer applications - emphasizing real-time responsiveness, cryptographic acceleration, and rich peripheral integration for connected edge devices.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F5671CHDFM#10?

The R5F5671CHDFM#10 operates at a maximum frequency of 120 MHz and achieves 707 CoreMark - measured under specified conditions per the official Renesas benchmark methodology. This performance level is enabled by the RXv3 CPU core's 113-instruction set, zero-wait-state 384 KB SRAM, and optimized pipeline. The R5F5671CHDFM#10 sustains this throughput across mixed workloads including interrupt handling, peripheral access, and floating-point computation.

Does the R5F5671CHDFM#10 support dual-bank flash for over-the-air updates?

Yes, the R5F5671CHDFM#10 features a dual-bank flash architecture that allows background programming (BGO) of one bank while executing code from the other. This enables safe, atomic firmware updates without system reset or interruption - essential for remote maintenance in deployed equipment. The R5F5671CHDFM#10 implements bank-exchange logic and startup-area selection via dedicated registers, fully documented in the R01DS0373EJ0120 datasheet.

What package type and pin count does the R5F5671CHDFM#10 use?

The R5F5671CHDFM#10 uses the PLQP0144KA-B package: a 144-pin LQFP with 20 × 20 mm body size and 0.50-mm lead pitch. It provides 111 general-purpose I/O pins, 20 of which are 5-V tolerant, and includes dedicated pins for USB, CAN, SDHI, QSPIX, and CTSU. This package is compatible with standard surface-mount assembly processes and thermal management for industrial ambient temperatures.

Which security features are implemented in hardware on the R5F5671CHDFM#10?

The R5F5671CHDFM#10 integrates Trusted Secure IP (TSIP) with hardware accelerators for AES128/192/256, TDES, RSA, ECC, SHA256, MD5, and a true random number generator (TRNG). It also includes a memory protection unit (MPU) with eight configurable regions and register write-protection logic for IEC60730 compliance. These features operate independently of the CPU core - ensuring cryptographic operations and memory isolation remain secure even under fault conditions. The R5F5671CHDFM#10 leverages these blocks for secure boot, firmware authentication, and key management.

Can the R5F5671CHDFM#10 operate with battery backup for RTC and registers?

Yes, the R5F5671CHDFM#10 supports battery backup via the VBATT pin, maintaining operation of the sub-clock oscillator, real-time clock (RTC), and 32 backup registers during main power loss. This functionality is validated across the industrial temperature range (–40°C to +85°C) and requires only a 1.8–3.6 V backup source. The R5F5671CHDFM#10 automatically switches to VBATT when VCC drops below the detection threshold, preserving timekeeping and critical state for applications like energy meters and alarm systems.