Renesas R5F5631GDGFB#V0

Overview

R5F5631GDGFB#V0 from Renesas is a 100 MHz 32-bit RX631 Group MCU with integrated FPU, 192 KB SRAM, 2 MB flash memory, and 32 KB data flash. It supports USB 2.0 host/function/OTG, CAN (2 channels), up to 13 SCI interfaces, 4 I²C channels, and 10-/12-bit A/D converters. Designed for industrial control systems requiring deterministic real-time response and functional safety support (IEC60730).

For engineers reviewing the R5F5631GDGFB#V0 datasheet, R5F5631GDGFB#V0 pinout, R5F5631GDGFB#V0 application, or R5F5631GDGFB#V0 equivalent, key selection criteria include its G-grade temperature range (−40°C to +105°C), LQFP-144 package with 111 GPIOs, absence of Ethernet MAC (distinguishing it from RX63N), and on-chip DEU for AES-128/192/256 encryption.

Technical Context

The R5F5631GDGFB#V0 implements the 32-bit RX CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling 165 DMIPS at 100 MHz. It integrates single-precision IEEE-754 FPU, memory protection unit (MPU), and JTAG/FINE debugging interfaces.

Its peripheral set includes dual CAN modules (ISO11898-1 compliant, 32 mailboxes each), USB 2.0 full-speed host/function/OTG controller with 2 KB buffer, and programmable pulse generator (PPG) synchronized to MTU2/TPU timers. The device omits Ethernet MAC and SDRAM controller-features exclusive to RX63N variants.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631GDGFB#V0, R5F563NEDDFB adds Ethernet but sacrifices GPIO count and requires layout changes, while R5F566TADDFB trades security and timing features for motor-control-specific peripherals and doubled SRAM-making each suitable only for distinct system architectures.

Availability

R5F5631GDGFB#V0 is available at Aetrix Electronics and suitable for industrial automation, smart metering, factory gateways, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F5631GDGFB#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-optimized industrial control applications demanding high computational throughput, functional safety support, and rich peripheral integration without Ethernet-targeting PLCs, HMIs, and energy infrastructure.

FAQ

What is the maximum operating frequency and core performance of the R5F5631GDGFB#V0?

The R5F5631GDGFB#V0 operates at a maximum frequency of 100 MHz using the 32-bit RX CPU core, delivering 165 DMIPS of processing performance. Its Harvard architecture with 5-stage pipeline and variable-length instructions enables ultra-compact code density and deterministic real-time execution critical for industrial control loops. The R5F5631GDGFB#V0 also includes a single-precision IEEE-754 floating-point unit for hardware-accelerated math operations.

Does the R5F5631GDGFB#V0 support Ethernet connectivity?

No, the R5F5631GDGFB#V0 does not include an Ethernet MAC or associated EDMAC controller. It belongs to the RX631 Group, which explicitly excludes Ethernet functionality-unlike the RX63N Group. This omission reduces pin count and simplifies PCB design for applications where wired LAN is unnecessary. For Ethernet-enabled alternatives, consider RX63N variants such as R5F563NEDDFB, though they require board-level changes due to different pin assignments.

What are the memory resources available on the R5F5631GDGFB#V0?

The R5F5631GDGFB#V0 integrates 2 MB of on-chip flash memory with zero-wait-state access at 100 MHz, 192 KB of high-speed SRAM, and 32 KB of reprogrammable data flash rated for 100,000 write/erase cycles. The flash supports both on-board and off-board programming, and the SRAM includes backup capability during deep software standby mode. These resources make the R5F5631GDGFB#V0 suitable for complex firmware with dual-bank updates and real-time data buffering.

How does the R5F5631GDGFB#V0 support functional safety standards like IEC60730?

The R5F5631GDGFB#V0 includes multiple hardware features for IEC60730 Class B compliance: oscillation-stoppage detection, built-in CRC calculator (with three polynomials), independent watchdog timer (IWDT) driven by a dedicated 125 kHz LOCO oscillator, self-diagnostic A/D converter test mode, and memory protection unit (MPU) for runtime memory access enforcement. These capabilities allow developers to implement robust runtime checks without external components-reducing BOM cost and board area. The R5F5631GDGFB#V0 is explicitly documented in Renesas' IEC60730 support materials.

What is the operating temperature range and package type of the R5F5631GDGFB#V0?

The R5F5631GDGFB#V0 is a G-grade device rated for −40°C to +105°C operation and housed in a 144-pin LQFP package (PLQP0144KA-A, 20 × 20 mm, 0.5 mm pitch). It provides 111 general-purpose I/O pins with 5-V tolerance on 18 pins, open-drain capability, and configurable pull-up resistors-enabling direct interfacing with industrial sensors and actuators. The exposed thermal pad improves heat dissipation in enclosed enclosures.