Renesas R5F5631WHDFP#V0

Overview

R5F5631WHDFP#V0 from Renesas is a 100 MHz 32-bit RX631 Group microcontroller featuring a 32-bit RX CPU core, 1 MB on-chip flash memory, 192 KB SRAM, 32 KB data flash, and integrated 12-bit/10-bit A/D converters. It supports USB 2.0 full-speed host/function interface, CAN (2 channels), up to 13 SCI channels, I²C (4 channels), and operates from a single 2.7–3.6 V supply in industrial temperature range (−40 to +85°C). It targets embedded control applications requiring deterministic real-time performance and peripheral integration without Ethernet.

For engineers reviewing the R5F5631WHDFP#V0 datasheet, R5F5631WHDFP#V0 pinout, R5F5631WHDFP#V0 application, or R5F5631WHDFP#V0 equivalent, key selection considerations include its 100-pin LQFP package (PLQP0100KB-A), absence of Ethernet MAC (distinguishing it from RX63N), support for USB OTG, dual CAN, and IEC60730-compliant safety features including CRC, IWDT, and self-diagnostic A/D functions.

Technical Context

The R5F5631WHDFP#V0 implements the RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates a memory protection unit (MPU), IEEE-754 single-precision FPU, and dual multiply-and-accumulate units - one optimized for register-to-register operations and another for memory-to-memory transfers.

Its clock system includes an internal 50 MHz HOCO, 125 kHz LOCO, and PLL-based frequency synthesis supporting independent clock domains: ICLK (up to 100 MHz for CPU), PCLK (up to 50 MHz for peripherals), FCLK (up to 50 MHz for FlashIF), and BCLK (up to 50 MHz for external bus). The device lacks Ethernet controller and SDRAM interface - confirmed exclusions for RX631 Group per datasheet Table 1.2.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-A), 14 × 14 mm, 0.5 mm pitch, exposed pad (thermal enhancement), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F563NWHDFP#V0, the R5F5631WHDFP#V0 removes Ethernet and SDRAM interfaces to reduce cost and complexity while retaining full USB/CAN/I²C peripheral set; versus R5F566TEHDFP#V0, it trades higher clock speed and motion-specific timers for broader analog and communication flexibility at lower power.

Availability

R5F5631WHDFP#V0 is available at Aetrix Electronics and suitable for industrial automation, smart metering, medical devices, and building control systems requiring stable component supply, long-term lifecycle support, and qualified industrial-grade MCU performance.

Supply support for R5F5631WHDFP#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-sensitive, high-integration embedded control applications requiring real-time determinism, functional safety compliance (IEC60730), and rich peripheral sets - excluding Ethernet to optimize price and power for non-networked edge nodes.

FAQ

What is the maximum operating frequency and core type of the R5F5631WHDFP#V0?

The R5F5631WHDFP#V0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core. This core delivers 165 DMIPS performance with a 5-stage pipeline, IEEE-754 single-precision FPU, and memory protection unit (MPU) - enabling deterministic real-time execution for industrial control and safety-critical tasks.

Does the R5F5631WHDFP#V0 include an Ethernet MAC controller?

No, the R5F5631WHDFP#V0 does not include an Ethernet MAC controller. It belongs to the RX631 Group, which explicitly excludes Ethernet functionality per Renesas documentation (R01DS0098EJ0180, Table 1.2). For Ethernet capability, the RX63N Group part R5F563NWHDFP#V0 is the direct package-compatible alternative.

What are the flash and RAM capacities of the R5F5631WHDFP#V0?

The R5F5631WHDFP#V0 integrates 1 MB of on-chip main flash memory and 192 KB of on-chip SRAM, both operating at zero wait states up to 100 MHz. It also includes 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles - suitable for parameter storage and firmware field updates.

Which communication interfaces are supported by the R5F5631WHDFP#V0?

The R5F5631WHDFP#V0 supports USB 2.0 full-speed host/function/OTG, two CAN 2.0B channels, up to 13 SCI channels (with LIN and smart-card modes), four I²C interfaces (one FM+), three SPI channels, and IEBus. It does not support Ethernet, SDRAM, or external bus expansion - distinguishing it from RX63N variants.

Is the R5F5631WHDFP#V0 qualified for industrial temperature range?

Yes, the R5F5631WHDFP#V0 is rated for the industrial temperature range of −40°C to +85°C (D version). Its thermal design, 2.7–3.6 V supply tolerance, and integrated temperature sensor (±1°C accuracy) make it suitable for deployment in harsh environments such as factory floors, outdoor energy meters, and HVAC equipment.