Renesas R5F5631ADGFC#V0

Overview

R5F5631ADGFC#V0 from Renesas is a 100 MHz 32-bit RX CPU core microcontroller in the RX631 Group, featuring 768 KB on-chip flash memory, 128 KB SRAM, 32 KB data flash, and integrated 12-bit/10-bit A/D converters. It supports Ethernet MAC (excluded in RX631), USB 2.0 host/function, CAN, multiple SCI/I²C/SPI interfaces, and operates from a single 2.7–3.6 V supply across –40 to +85°C. It targets industrial control and networked embedded systems requiring deterministic real-time performance.

For engineers reviewing the R5F5631ADGFC#V0 datasheet, R5F5631ADGFC#V0 pinout, R5F5631ADGFC#V0 application, or R5F5631ADGFC#V0 equivalent, key selection criteria include its RX631 Group identity (no Ethernet controller), LQFP-176 package, 768 KB flash / 128 KB RAM configuration, 100 MHz operation with FPU, and support for IEC60730 safety compliance functions including CRC, self-diagnostic A/D, and oscillation-stop detection.

Technical Context

The R5F5631ADGFC#V0 implements the CISC Harvard-architecture RX CPU core with 5-stage pipeline, variable-length instructions, and IEEE-754 single-precision FPU delivering 165 DMIPS at 100 MHz. It integrates a memory protection unit (MPU), JTAG/FINE debug interfaces, and supports little-endian or big-endian data arrangement.

Its peripheral set includes three CAN modules (32 mailboxes each), up to 13 SCI channels (with LIN, smart-card, SPI/I²C emulation), four I²C interfaces (one FM+), three RSPI channels, and a 21-channel 12-bit A/D converter with sample-and-hold and conversion trigger flexibility via MTU2/TPU/TMR or external pins.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631ADGFC#V0, R5F563NACDFC adds Ethernet capability but increases design complexity and power budget, while R5F562TADFP reduces feature set and security to lower cost-making R5F5631ADGFC#V0 optimal for balanced industrial connectivity, safety, and compute density.

Availability

R5F5631ADGFC#V0 is available at Aetrix Electronics and suitable for industrial automation, building management systems, and smart energy metering requiring stable component supply, long-term lifecycle assurance, and full Renesas ecosystem support.

Supply support for R5F5631ADGFC#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 Corporation 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-performance, safety-aware industrial applications demanding real-time responsiveness, rich connectivity (CAN/USB/SCI), and functional safety compliance-without Ethernet overhead.

FAQ

What is the maximum operating frequency and CPU performance of the R5F5631ADGFC#V0?

The R5F5631ADGFC#V0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS using its 32-bit RX CPU core with integrated IEEE-754 single-precision floating-point unit. This performance level enables real-time execution of complex control algorithms and communication stacks without external acceleration. The R5F5631ADGFC#V0 achieves deterministic timing through its 5-stage pipeline and zero-wait-state memory access.

Does the R5F5631ADGFC#V0 include an Ethernet controller?

No, the R5F5631ADGFC#V0 belongs to the RX631 Group, which explicitly excludes the Ethernet MAC and EDMAC peripherals present in the RX63N Group. This distinction is confirmed in Renesas documentation (R01DS0098EJ0180), where Table 1.2 shows "Not available" for Ethernet controller in all RX631 packages. The R5F5631ADGFC#V0 retains full USB 2.0 host/function/OTG, CAN, and multiple serial interfaces instead.

What memory resources are integrated in the R5F5631ADGFC#V0?

The R5F5631ADGFC#V0 integrates 768 KB of on-chip flash memory, 128 KB of SRAM, and 32 KB of reprogrammable data flash. Flash and SRAM both operate at zero wait states up to 100 MHz, ensuring deterministic code execution and data throughput. The data flash supports 100,000 erase/write cycles and enables background programming/erasing (BGO), allowing firmware updates without halting application code.

Which safety standards does the R5F5631ADGFC#V0 support for industrial applications?

The R5F5631ADGFC#V0 includes hardware features aligned with IEC60730 Class B compliance, including oscillation-stoppage detection, built-in CRC calculator (with X8/X16 polynomials), independent watchdog timer (IWDT), and self-diagnostic capability for the 10-bit A/D converter. These features reduce software validation burden and support functional safety requirements in household appliances and industrial controls without requiring external safety monitors.

What package type and pin count does the R5F5631ADGFC#V0 use?

The R5F5631ADGFC#V0 uses the PLQP0176KB-A package: a 176-pin LQFP with 24 × 24 mm body size and 0.5 mm pitch. This package provides 133 general-purpose I/O pins (5-V tolerant, open-drain capable), 18 of which are 5-V tolerant, and supports full peripheral access including CAN, USB, and multiple serial interfaces. Pinout matches other RX631 LQFP-176 variants per Renesas datasheet R01DS0098EJ0180.