Renesas R5F5631ADGFB#V0

Overview

R5F5631ADGFB#V0 from Renesas is a 100 MHz 32-bit RX631 Group MCU with integrated FPU, 768 KB on-chip flash memory, 128 KB SRAM, and 32 KB data flash. It features a 12-bit A/D converter (21 channels), 10-bit A/D converter (8 channels), dual 10-bit D/A converters, Ethernet MAC (not present in RX631), USB 2.0 host/function, CAN, multiple SCI/I²C/RSPI interfaces, and operates from 2.7–3.6 V at –40 to +85°C. It targets industrial control and networked embedded systems requiring deterministic real-time performance.

For engineers reviewing the R5F5631ADGFB#V0 datasheet, R5F5631ADGFB#V0 pinout, R5F5631ADGFB#V0 application, or R5F5631ADGFB#V0 equivalent, key selection criteria include its RX631 Group identity (no Ethernet controller), LQFP-144 package, 768 KB flash / 128 KB RAM configuration, support for IEC60730 safety compliance functions, and compatibility with Renesas E1/E20 debug interfaces.

Technical Context

The R5F5631ADGFB#V0 implements the 32-bit RX CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-delivering 165 DMIPS at 100 MHz. It integrates single-precision IEEE-754 floating-point unit, memory protection unit (MPU), and JTAG/FINE debugging interfaces.

Its peripheral set includes three CAN modules (32 mailboxes each), up to 13 SCI channels (with LIN/Smart Card modes), four I²C interfaces (one FM+), three RSPI channels, and a 16-bit MTU2 timer with PWM and phase-counting capability-configured for deterministic timing-critical applications without Ethernet MAC functionality.

Key Specifications

Pinout & Package

Package: PLQP0144KA-A - 144-pin LQFP, 20 × 20 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 R5F5631ADGFB#V0, R5F5631EDGFB#V0 offers scalable memory for complex firmware, while R5F563NACDFB#V0 adds Ethernet MAC at the cost of higher power and different qualification-making R5F5631ADGFB#V0 optimal for cost-sensitive, non-Ethernet industrial control where memory headroom and IEC60730 compliance are prioritized.

Availability

R5F5631ADGFB#V0 is available at Aetrix Electronics and suitable for industrial PLC controllers, building automation gateways, medical diagnostic instruments, and energy metering terminals requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F5631ADGFB#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 industrial, automotive, and enterprise markets.

The RX631 Group is designed for high-performance, safety-certifiable industrial control applications-emphasizing real-time determinism, functional safety (IEC60730), and rich peripheral integration without Ethernet, enabling compact, cost-optimized designs.

FAQ

What is the maximum operating frequency and core performance of the R5F5631ADGFB#V0?

The R5F5631ADGFB#V0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS using the 32-bit RX CPU core. Its single-precision IEEE-754 FPU, 5-stage pipeline, and variable-length instruction set enable deterministic real-time execution critical for industrial control loops. The R5F5631ADGFB#V0 achieves this performance with zero-wait-state access to both 768 KB flash and 128 KB SRAM.

Does the R5F5631ADGFB#V0 include an Ethernet MAC controller?

No, the R5F5631ADGFB#V0 belongs to the RX631 Group, which explicitly excludes the Ethernet MAC controller. This distinguishes it from the RX63N Group (e.g., R5F563NACDFB#V0). The R5F5631ADGFB#V0 retains all other major peripherals-including USB 2.0 host/function, CAN, multiple SCI/I²C/RSPI, and A/D/D/A converters-but requires an external PHY for Ethernet connectivity if needed.

What safety features does the R5F5631ADGFB#V0 provide for IEC60730 compliance?

The R5F5631ADGFB#V0 integrates multiple hardware features supporting IEC60730 Class B compliance: oscillation-stop detection, CRC calculator (with three polynomials), self-diagnostic A/D converter, independent watchdog timer (IWDT) with dedicated LOCO clock, and real-time clock (RTC) with battery backup. These capabilities are documented in Renesas Application Note R01AN1303 and are implemented directly in silicon-no external components required for basic safety monitoring in the R5F5631ADGFB#V0.

What package type and pin count does the R5F5631ADGFB#V0 use?

The R5F5631ADGFB#V0 uses the PLQP0144KA-A package: a 144-pin LQFP measuring 20 × 20 mm with 0.5 mm pitch and an exposed thermal pad. It provides 111 general-purpose I/O pins (including 18 that are 5-V tolerant), 16 external interrupt inputs (IRQ0–IRQ15), and dedicated debug pins for JTAG and FINE interfaces-matching the mechanical and thermal requirements of space-constrained industrial PCBs.

How much on-chip memory does the R5F5631ADGFB#V0 include, and what are its endurance specifications?

The R5F5631ADGFB#V0 includes 768 KB of on-chip main flash memory (zero-wait-state at 100 MHz), 128 KB of on-chip SRAM, and 32 KB of on-chip data flash memory. The data flash is rated for 100,000 program/erase cycles and supports background operation (BGO), allowing concurrent execution and data logging. This memory configuration is factory-programmed and fixed for the R5F5631ADGFB#V0; no variants offer different capacities in this specific part number.