Renesas R5F5631FHDFC#V0

Overview

R5F5631FHDFC#V0 from Renesas is a 100 MHz 32-bit RX 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 10-/12-bit A/D converters. It supports USB 2.0 host/function/OTG, CAN, I²C, SPI, and SCI interfaces - but excludes Ethernet MAC - and targets industrial HMI, motor control, and smart sensor edge nodes.

For engineers reviewing the R5F5631FHDFC#V0 datasheet, R5F5631FHDFC#V0 pinout, R5F5631FHDFC#V0 application, or R5F5631FHDFC#V0 equivalent, key selection criteria include its RX631 Group identity (no Ethernet), LQFP-176 package, 100 MHz operation, 2 MB flash/256 KB RAM configuration, and -40°C to +85°C temperature grade.

Technical Context

The R5F5631FHDFC#V0 implements the CISC Harvard-architecture RX CPU core with 5-stage pipeline, variable-length instructions, and MPU support. It executes at 165 DMIPS @ 100 MHz and integrates dual multiply-accumulate units, 32-bit multiplier (1-cycle), and divider (2-cycle), enabling deterministic real-time control loops.

Its peripheral set includes three CAN modules (32 mailboxes each), up to 13 SCI channels (with LIN/Smart Card/I²C/SPI modes), four I²C interfaces (1 Mbps), three RSPI channels, and a parallel data capture unit (PDC) - all synchronized to programmable PCLK up to 50 MHz, with independent clock domain control for ICLK, PCLK, FCLK, and BCLK.

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 R5F5631FHDFC#V0, the RX63N alternative adds Ethernet at the cost of increased pin count and power; the RX66T offers higher clock speed and larger RAM but removes USB OTG and reduces CAN flexibility - making R5F5631FHDFC#V0 optimal for balanced USB/CAN/HMI designs without Ethernet.

Availability

R5F5631FHDFC#V0 is available at Aetrix Electronics and suitable for industrial HMI, motor control, energy metering, and smart sensor node applications requiring stable component supply across extended product lifecycles.

Supply support for R5F5631FHDFC#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 designed for cost-optimized, high-integration industrial control applications where USB, CAN, and rich analog peripherals are essential - but Ethernet is unnecessary - delivering deterministic real-time performance in compact LQFP packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F5631FHDFC#V0?

The R5F5631FHDFC#V0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS of processing performance using the 32-bit RX CPU core. Its architecture includes a 5-stage pipeline, variable-length instructions, and hardware floating-point support per IEEE-754, enabling efficient execution of real-time control algorithms without software emulation overhead. This performance level is confirmed in Renesas document R01DS0098EJ0180.

Does the R5F5631FHDFC#V0 include an Ethernet MAC controller?

No, the R5F5631FHDFC#V0 belongs to the RX631 Group, which explicitly excludes the Ethernet MAC and associated EDMAC peripheral. Only RX63N Group devices (e.g., R5F563NFDHFC#V0) integrate Ethernet functionality. This distinction is clearly defined in Table 1.2 of the R01DS0098EJ0180 datasheet, confirming R5F5631FHDFC#V0's focus on USB/CAN/I²C-based connectivity instead.

What are the flash and RAM capacities configured in the R5F5631FHDFC#V0?

The R5F5631FHDFC#V0 is configured with 2 Mbytes of on-chip main flash memory and 256 Kbytes of on-chip SRAM, both accessible at zero wait states up to 100 MHz. It also includes 32 Kbytes of reprogrammable data flash rated for 100,000 erase/write cycles. These values are specified in Table 1.3 (List of Products) of the R01DS0098EJ0180 datasheet under the PLQP0176KB-A package entry.

Which communication interfaces are supported by the R5F5631FHDFC#V0?

The R5F5631FHDFC#V0 supports USB 2.0 full-speed host/function/OTG, three CAN 2.0B modules (32 mailboxes each), up to 13 SCI channels (with UART/LIN/Smart Card modes), four I²C interfaces (1 Mbps), three RSPI channels, and one IEBus channel. It does not support Ethernet or CAN FD. All interface counts and capabilities are verified in Table 1.2 of R01DS0098EJ0180 for the RX631 Group LQFP-176 configuration.

What is the operating temperature range and package type of the R5F5631FHDFC#V0?

The R5F5631FHDFC#V0 is rated for industrial operation from -40°C to +85°C (D version) and housed in a PLQP0176KB-A package: a 176-pin LQFP measuring 24 mm × 24 mm with 0.5 mm pitch and RoHS compliance. This package information and temperature grade are explicitly listed in Table 1.3 of the R01DS0098EJ0180 datasheet for the R5F5631FHDFC#V0 part number.