Renesas R5F5631DDGFB#V0

Overview

R5F5631DDGFB#V0 from Renesas is a 100 MHz 32-bit RX CPU core microcontroller in the RX631 Group, featuring 512 KB on-chip flash memory, 64 KB SRAM, 32 KB data flash, and integrated 12-bit/10-bit A/D converters. It supports USB 2.0 full-speed host/function interface, CAN (ISO 11898-1), up to 13 SCI channels, I²C, SPI, RTC, and operates from a single 2.7–3.6 V supply across –40 to +85°C. It targets industrial HMI, motor control, and networked embedded systems requiring deterministic real-time performance without Ethernet.

For engineers reviewing the R5F5631DDGFB#V0 datasheet, R5F5631DDGFB#V0 pinout, R5F5631DDGFB#V0 application, or R5F5631DDGFB#V0 equivalent, this page delivers verified specifications, package mapping to PLQP0144KA-A (144-pin LQFP), confirmed peripheral channel counts per package, functional distinctions from RX63N Group (e.g., no Ethernet MAC), and two validated alternative parts with documented technical and application differences.

Technical Context

The R5F5631DDGFB#V0 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. It integrates a memory protection unit (MPU), IEEE-754 single-precision FPU, and dual multiply-and-accumulate units - one for register-to-register and one for memory-to-memory operations.

Its clock system includes internal 125-kHz LOCO and 50-MHz HOCO oscillators, external crystal support (4–16 MHz), and PLL-based frequency synthesis. Power management features four low-power modes, RTC battery backup capability, and module stop functions - all supporting IEC 60730-compliant safety-critical applications.

Key Specifications

Pinout & Package

Package: PLQP0144KA-A - 144-pin LQFP, 20 × 20 mm, 0.5 mm pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631DDGFB#V0, R5F563NEDDFB adds Ethernet functionality at higher BOM cost and power, while R5F566TDDFP delivers superior real-time determinism and analog throughput for advanced motion control - making R5F5631DDGFB#V0 optimal for balanced industrial HMI and mid-tier motor control where Ethernet and extreme timing are unnecessary.

Availability

R5F5631DDGFB#V0 is available at Aetrix Electronics and suitable for industrial HMI, smart motor drives, building automation nodes, and medical diagnostic subsystems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F5631DDGFB#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 was designed for cost-sensitive, real-time industrial applications requiring rich peripheral integration - including USB, CAN, multiple serial interfaces, and safety features - without Ethernet overhead, targeting HMI, motor control, and factory automation.

FAQ

What is the maximum operating frequency and core type of the R5F5631DDGFB#V0?

The R5F5631DDGFB#V0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core. This core delivers 165 DMIPS performance, incorporates a 5-stage pipeline, supports IEEE-754 single-precision floating-point arithmetic, and includes a memory protection unit (MPU) for secure multitasking environments. Its instruction set enables ultra-compact code, reducing flash footprint in resource-constrained applications.

Does the R5F5631DDGFB#V0 include an Ethernet controller?

No, the R5F5631DDGFB#V0 does not include an Ethernet controller. It belongs to the RX631 Group, which explicitly excludes the Ethernet MAC, EDMAC, and associated MII/RMII interfaces found in the RX63N Group. This omission reduces silicon cost and power consumption, making R5F5631DDGFB#V0 appropriate for applications where LAN connectivity is handled externally or not required - such as standalone motor drives or local HMI panels.

What are the flash and RAM capacities of the R5F5631DDGFB#V0?

The R5F5631DDGFB#V0 integrates 512 KB of on-chip main flash memory and 64 KB of on-chip SRAM, both operating at zero wait states up to 100 MHz. It also includes 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. These capacities support robust firmware images, real-time data buffers, and nonvolatile parameter storage - sufficient for complex industrial firmware with dual-bank update capability.

Which package type is used for the R5F5631DDGFB#V0?

The R5F5631DDGFB#V0 uses the PLQP0144KA-A package: a 144-pin LQFP measuring 20 × 20 mm with 0.5 mm pitch. This package provides 111 general-purpose I/O pins (including 18 with 5-V tolerance), supports external bus expansion (16-bit mode), and is compatible with standard surface-mount assembly processes. Pin compatibility is confirmed per Renesas document R01DS0098EJ0180 Table 1.2.

What safety and security features does the R5F5631DDGFB#V0 support?

The R5F5631DDGFB#V0 supports IEC 60730 Class B compliance through integrated features including oscillation-stop detection, hardware CRC calculator (with three polynomials), independent watchdog timer (IWDT) with dedicated LOCO clock, and self-diagnostic functions for the 10-bit A/D converter. It also includes a Data Encryption Unit (DEU) supporting AES-128/192/256 encryption in ECB/CBC modes, enabling secure firmware authentication and data confidentiality.