Renesas R5F5631ECDFB#V0

Overview

R5F5631ECDFB#V0 from Renesas is a 100 MHz 32-bit RX631 Group microcontroller featuring the RX CPU core with single-precision IEEE-754 FPU, 2 MB on-chip flash memory, 128 KB SRAM, 32 KB data flash, 12-bit and 10-bit A/D converters (21 + 8 channels), dual 10-bit D/A outputs, Ethernet MAC (not included - RX631 Group excludes Ethernet), USB 2.0 host/function/OTG, CAN v2.0B (2 channels), and RTC - deployed in industrial HMI and networked sensor gateway applications.

For engineers reviewing the R5F5631ECDFB#V0 datasheet, R5F5631ECDFB#V0 pinout, R5F5631ECDFB#V0 application, or R5F5631ECDFB#V0 equivalent, this page delivers verified specifications, package mapping to PLQP0144KA-A (144-pin LQFP, 20 × 20 mm, 0.5-mm pitch), functional differentiation from RX63N, real-world use cases, and two validated alternative parts with documented technical and application-level distinctions.

Technical Context

The R5F5631ECDFB#V0 implements the RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It executes at 100 MHz with 165 DMIPS performance and includes hardware floating-point unit compliant with IEEE-754 single-precision standard.

It integrates dual clock domains: ICLK up to 100 MHz for CPU/core logic, and PCLK up to 50 MHz for peripherals. Memory subsystem features zero-wait-state 100-MHz flash access, 100-MHz SRAM, and background-programmable 32-KB data flash supporting 100,000 erase/write cycles.

Key Specifications

Pinout & Package

Package: PLQP0144KA-A - 144-pin LQFP, 20 × 20 mm body, 0.5-mm pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631ECDFB#V0, the R5F563NEDDFB#V0 adds Ethernet but sacrifices RTC battery backup and sub-clock support, while the R5F562NEDDFB#V0 trades performance, memory, and feature depth for lower BOM cost - making each viable only within clearly bounded architectural constraints.

Availability

R5F5631ECDFB#V0 is available at Aetrix Electronics and suitable for industrial HMI, networked sensor gateways, PLC I/O modules, and USB-capable actuator controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F5631ECDFB#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 high-integration industrial control applications demanding real-time performance, rich analog/mixed-signal capability, USB connectivity, and functional safety support - without Ethernet overhead.

FAQ

What is the maximum operating frequency and core type of the R5F5631ECDFB#V0?

The R5F5631ECDFB#V0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core with 5-stage pipeline and Harvard architecture. It delivers 165 DMIPS performance and includes a single-precision IEEE-754 floating-point unit - enabling efficient execution of control algorithms and signal processing tasks without external coprocessors.

Does the R5F5631ECDFB#V0 include an Ethernet MAC controller?

No, the R5F5631ECDFB#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., R5F563NEDDFB#V0). For Ethernet functionality, an external PHY and software stack must be implemented via GPIO or SCI interfaces.

What package type and pin count does the R5F5631ECDFB#V0 use?

The R5F5631ECDFB#V0 uses the PLQP0144KA-A package: a 144-pin LQFP with 20 × 20 mm body size, 0.5-mm pitch, and exposed thermal pad. It provides 111 general-purpose I/O pins, 18 of which are 5-V tolerant - facilitating direct interfacing with industrial-level signaling standards.

How much on-chip memory does the R5F5631ECDFB#V0 integrate?

The R5F5631ECDFB#V0 integrates 2 MB of on-chip flash memory (zero-wait-state at 100 MHz), 128 KB of SRAM (zero-wait-state), and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. The data flash supports background operation, allowing concurrent program execution and firmware updates.

What analog peripherals are included in the R5F5631ECDFB#V0?

The R5F5631ECDFB#V0 includes a 21-channel 12-bit S12AD converter with sample-and-hold, an 8-channel 10-bit AD converter, two 10-bit D/A outputs (DA0/DA1), and an on-die temperature sensor with ±1°C accuracy digitized via the 12-bit A/D. These support precision sensor acquisition and analog actuation in industrial environments.