Renesas R5F5631WDGFC#V0

Overview

R5F5631WDGFC#V0 from Renesas is a 100 MHz 32-bit RX CPU core microcontroller in the RX631 Group, featuring 768 KB on-chip flash memory, 128 KB SRAM, 32 KB data flash, IEEE-754 single-precision FPU, and integrated 10-/12-bit A/D converters. It supports USB 2.0 full-speed host/function/OTG, CAN (2 channels), up to 13 SCI interfaces, I²C (4 channels), RSPI (3 channels), and operates from a 2.7–3.6 V supply across –40 to +85°C.

For engineers reviewing the R5F5631WDGFC#V0 datasheet, R5F5631WDGFC#V0 pinout, R5F5631WDGFC#V0 application, or R5F5631WDGFC#V0 equivalent, this MCU delivers deterministic real-time performance for industrial HMI, motor control gateways, and networked sensor nodes requiring deterministic interrupt latency, cryptographic acceleration (AES-128/192/256), and IEC 60730 safety support - without Ethernet MAC functionality.

Technical Context

The R5F5631WDGFC#V0 implements the CISC Harvard-architecture RX CPU with 5-stage pipeline, variable-length instructions, and MPU-enforced memory protection. It executes at 165 DMIPS @ 100 MHz and integrates dual multiply-accumulate units, 32-bit multiplier (1-cycle), and 32-bit divider (2-cycle).

Its peripheral set excludes Ethernet MAC and EDMAC (distinguishing it from RX63N), but includes full-speed USB 2.0 OTG/host/function controller with 2 KB buffer RAM, 3 CAN modules (2 active in this variant), and parallel data capture unit (PDC) supporting image sensor interfacing via DTC/DMAC transfers to internal RAM or external SDRAM space.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin LQFP, 24 × 24 mm, 0.5 mm pitch, RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631WDGFC#V0, R5F563NEDDFC adds Ethernet infrastructure but increases BOM cost and layout complexity, while R5F566TEBDFP trades USB/DEU for higher PWM precision and computational throughput - making R5F5631WDGFC#V0 optimal for cost-sensitive, USB-connected, safety-certifiable industrial controllers without Ethernet.

Availability

R5F5631WDGFC#V0 is available at Aetrix Electronics and suitable for industrial HMI, smart motor gateways, networked environmental sensors, medical diagnostic peripherals, and IEC 60730-compliant embedded systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F5631WDGFC#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX631 Group targets cost-optimized industrial control applications requiring real-time determinism, functional safety support, and rich peripheral integration - with R5F5631WDGFC#V0 delivering balanced performance, security, and low-power operation in a mature 176-pin LQFP package.

FAQ

What is the maximum operating frequency and CPU performance of the R5F5631WDGFC#V0?

The R5F5631WDGFC#V0 operates at a maximum system clock frequency of 100 MHz and delivers 165 DMIPS of processing performance. Its RX CPU core includes a 5-stage pipeline, variable-length instructions, and hardware floating-point unit compliant with IEEE-754 single-precision standard - enabling efficient execution of real-time control algorithms and signal processing tasks within the R5F5631WDGFC#V0's deterministic timing envelope.

Does the R5F5631WDGFC#V0 include an Ethernet MAC controller?

No, the R5F5631WDGFC#V0 belongs to the RX631 Group, which explicitly excludes the Ethernet MAC and associated EDMAC peripheral. This distinguishes it from the RX63N Group (e.g., R5F563NEDDFC). The R5F5631WDGFC#V0 instead emphasizes USB 2.0 full-speed OTG/host/function, CAN, and multiple serial interfaces - making it suitable for applications where wired Ethernet is not required but USB connectivity and fieldbus interoperability are critical.

What memory resources are integrated into the R5F5631WDGFC#V0?

The R5F5631WDGFC#V0 integrates 768 KB of on-chip flash memory (zero-wait-state at 100 MHz), 128 KB of SRAM (no-wait access for instructions and data), and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. These resources support robust firmware storage, real-time data buffering, and non-volatile parameter retention - all within the single-chip architecture of the R5F5631WDGFC#V0 without requiring external memory expansion.

How does the R5F5631WDGFC#V0 support functional safety compliance?

The R5F5631WDGFC#V0 includes multiple hardware features aligned with IEC 60730 Class B requirements: oscillation-stop detection for main/sub clocks, independent watchdog timer (IWDT) with dedicated LOCO clock, CRC calculator supporting three polynomials, self-diagnostic function for the 10-bit A/D converter, and memory protection unit (MPU) for runtime memory access enforcement - all documented in the R5F5631WDGFC#V0's safety manual and validated for use in certified industrial control designs.

What is the package type and pin count of the R5F5631WDGFC#V0?

The R5F5631WDGFC#V0 is packaged in a PLQP0176KB-A - a 176-pin LQFP measuring 24 × 24 mm with 0.5 mm pitch. This RoHS-compliant, surface-mount package supports standard reflow soldering and provides 133 general-purpose I/O pins (including 18 with 5-V tolerance), dedicated USB and CAN transceiver pins, and separate analog/digital power domains - matching the mechanical and thermal requirements of industrial PCB layouts where the R5F5631WDGFC#V0 is deployed.