Renesas R5F5631FDDFC#V0

Overview

R5F5631FDDFC#V0 from Renesas is a 100 MHz 32-bit RXv1 CPU-based microcontroller in the RX631 Group, featuring 2 MB on-chip flash memory, 256 KB SRAM, 32 KB data flash, IEEE-754 single-precision FPU, and integrated 12-bit/10-bit ADCs - designed for industrial HMI, motor control, and networked embedded systems requiring deterministic real-time performance without Ethernet.

For engineers reviewing the R5F5631FDDFC#V0 datasheet, R5F5631FDDFC#V0 pinout, R5F5631FDDFC#V0 application, or R5F5631FDDFC#V0 equivalent, this MCU delivers verified 165 DMIPS at 100 MHz, hardware CRC, AES encryption (DEU), USB 2.0 host/function/OTG, CAN v2.0B (2 channels), and IEC60730-compliant safety features - all in a 176-pin LQFP package with -40°C to +85°C operation.

Technical Context

The R5F5631FDDFC#V0 implements the RXv1 core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates dedicated peripherals including MTU2 (6-channel 16-bit timer), TPU (12-channel 16-bit timer), 13 SCI modules supporting UART/SPI/I²C emulation, and 4 RIIC interfaces with 1 Mbps FM+ capability.

Its memory subsystem includes zero-wait-state 100 MHz flash and SRAM, background-programmable 32 KB data flash (100,000 erase/write cycles), and dual A/D converters - one 12-bit unit (21 channels, 1 µs conversion @50 MHz PCLK) and one 10-bit unit (8 channels). The device omits Ethernet MAC and SDRAM controller, distinguishing it from RX63N variants.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin LQFP, 24 mm × 24 mm, 0.5 mm pitch, exposed pad, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F5631FDDFC#V0, the RX63N alternative adds Ethernet but removes USB OTG flexibility and increases package thermal resistance, while the RX66T offers higher clock speed and motor-control-specific timers but sacrifices security features and USB versatility - making R5F5631FDDFC#V0 optimal for balanced industrial edge nodes.

Availability

R5F5631FDDFC#V0 is available at Aetrix Electronics and suitable for industrial HMI, motor control gateways, smart energy meters, and factory automation nodes requiring stable component supply, long-term lifecycle assurance, and full production traceability.

Supply support for R5F5631FDDFC#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 is engineered for cost-sensitive industrial applications demanding real-time determinism, functional safety support (IEC60730), and rich peripheral integration - without Ethernet overhead - making R5F5631FDDFC#V0 ideal for standalone control nodes.

FAQ

What is the maximum operating frequency and core architecture of the R5F5631FDDFC#V0?

The R5F5631FDDFC#V0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instruction set. It delivers 165 DMIPS and includes a single-precision IEEE-754 floating-point unit. This architecture enables deterministic real-time execution critical for industrial control applications where R5F5631FDDFC#V0 serves as the primary processing unit.

Does the R5F5631FDDFC#V0 include Ethernet capability?

No, the R5F5631FDDFC#V0 belongs to the RX631 Group and explicitly excludes the Ethernet MAC and associated EDMAC controller present in the RX63N Group. Its communication suite focuses on USB 2.0 host/function/OTG, CAN v2.0B (2 channels), 13 SCI modules, and 4 RIIC interfaces - making R5F5631FDDFC#V0 suitable for applications that prioritize local interconnect over IP networking.

What memory resources are integrated into the R5F5631FDDFC#V0?

The R5F5631FDDFC#V0 integrates 2 Mbytes of on-chip flash memory (100 MHz, zero-wait), 256 Kbytes of SRAM (zero-wait, deep software standby backup capable), and 32 Kbytes of reprogrammable data flash (100,000 erase/write cycles, background operation). These resources support complex firmware, real-time buffering, and secure field updates - all essential for robust deployment of R5F5631FDDFC#V0 in industrial environments.

Which safety and security features does the R5F5631FDDFC#V0 support?

The R5F5631FDDFC#V0 includes hardware CRC calculation (three polynomials), Data Encryption Unit (AES-128/192/256 in ECB/CBC mode), memory protection unit (MPU), oscillation-stop detection, and self-diagnostic functions for the A/D converter - all aligned with IEC60730 Class B requirements. These features directly enhance functional safety and firmware integrity in R5F5631FDDFC#V0-based certified industrial equipment.

What package type and pin count does the R5F5631FDDFC#V0 use?

The R5F5631FDDFC#V0 is housed in a 176-pin LQFP package (PLQP0176KB-A), measuring 24 mm × 24 mm with 0.5 mm pitch and an exposed thermal pad. It provides 133 general-purpose I/O pins with 5-V tolerance, pull-up resistors, and open-drain capability - optimized for industrial PCB layouts requiring mechanical robustness and thermal reliability in R5F5631FDDFC#V0 implementations.