Renesas R5F5631KDGFP#V0

Overview

R5F5631KDGFP#V0 from Renesas is a 100 MHz 32-bit RX CPU-based microcontroller in the RX631 Group, featuring 2 MB on-chip flash memory, 192 KB SRAM, 32 KB data flash, IEEE-754 single-precision FPU, and integrated 10-/12-bit A/D converters - designed for industrial control and networked embedded systems requiring deterministic real-time performance without Ethernet.

For engineers reviewing the R5F5631KDGFP#V0 datasheet, R5F5631KDGFP#V0 pinout, R5F5631KDGFP#V0 application, or R5F5631KDGFP#V0 equivalent, this part supports USB 2.0 host/function/OTG, CAN (3 channels), 13 SCI interfaces, 4 I²C buses, 3 RSPI, RTC with battery backup, AES encryption (DEU), and IEC60730 safety functions - all within a 100-pin LQFP package operating from 2.7–3.6 V at –40 to +85°C.

Technical Context

The R5F5631KDGFP#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-and-accumulate units plus a 32-bit multiplier (1-cycle) and divider (2-cycle).

Its peripheral set excludes Ethernet MAC and SDRAM controller (distinguishing it from RX63N), but includes full-featured USB 2.0 OTG, three CAN modules (32 mailboxes each), parallel data capture unit (PDC), and dedicated DMA controllers (DMAC, EXDMAC, DTC) - optimized for deterministic I/O handling in motion control and HMI applications.

Key Specifications

Pinout & Package

Package: PLQP0100KB-A - 100-pin LQFP, 14 × 14 mm, 0.5-mm pitch, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631KDGFP#V0, the R5F5631EDDFP#V0 trades memory capacity for lower BOM cost, while the R5F563NKHDFP#V0 adds Ethernet at the expense of PDC and higher power - making R5F5631KDGFP#V0 optimal for USB/CAN-based edge controllers where deterministic I/O and compact form factor are prioritized.

Availability

R5F5631KDGFP#V0 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and human-machine interface applications requiring stable component supply, long-term lifecycle assurance, and automotive-grade temperature resilience.

Supply support for R5F5631KDGFP#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, and power solutions for industrial, automotive, and IoT markets.

The RX631 Group targets cost-optimized, high-performance embedded control applications - delivering real-time determinism, functional safety readiness, and rich connectivity (USB/CAN/I²C) without Ethernet overhead.

FAQ

What is the maximum operating frequency and core architecture of the R5F5631KDGFP#V0?

The R5F5631KDGFP#V0 operates at a maximum frequency of 100 MHz using the 32-bit RX CPU core - a CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and memory protection unit (MPU). It delivers 165 DMIPS and includes hardware floating-point (IEEE-754 single precision), two multiply-and-accumulate units, and a 32-bit multiplier with one-cycle execution.

Does the R5F5631KDGFP#V0 include Ethernet capability?

No, the R5F5631KDGFP#V0 belongs to the RX631 Group and does not integrate an Ethernet MAC or RMII/MII interface. That functionality is exclusive to the RX63N Group. The R5F5631KDGFP#V0 instead emphasizes USB 2.0 host/function/OTG, three CAN channels, and 13 SCI interfaces - making it suitable for non-Ethernet industrial networks.

What memory resources are integrated into the R5F5631KDGFP#V0?

The R5F5631KDGFP#V0 integrates 2 Mbytes of on-chip flash memory (zero-wait-state at 100 MHz), 192 Kbytes of SRAM (zero-wait-state), and 32 Kbytes of reprogrammable data flash (rated for 100,000 erase/write cycles). All memory is accessible without external bus expansion, supporting ROM-less boot and background programming operations.

Which analog peripherals are available on the R5F5631KDGFP#V0?

The R5F5631KDGFP#V0 includes a 21-channel 12-bit A/D converter with sample-and-hold and trigger synchronization, an 8-channel 10-bit A/D converter with self-diagnostic capability, two 10-bit D/A converters, and an on-die temperature sensor (±1°C accuracy) digitized via the 12-bit A/D. These support precision sensing, closed-loop control, and thermal monitoring.

Is the R5F5631KDGFP#V0 qualified for functional safety standards like IEC60730?

Yes, the R5F5631KDGFP#V0 includes multiple hardware features for IEC60730 Class B compliance: oscillation-stop detection, built-in CRC calculator (with selectable polynomials), independent watchdog timer (IWDT), self-diagnostic function for the 10-bit A/D converter, and clock frequency measurement capability - enabling robust runtime safety checks without external components.