Renesas R5F5631JDDFB#V0

Overview

R5F5631JDDFB#V0 from Renesas is a 100 MHz 32-bit RX631 Group microcontroller with integrated FPU, 165 DMIPS performance, 1.5 MB on-chip flash memory, 256 KB SRAM, and full-speed USB 2.0 host/function interface - designed for industrial control systems requiring deterministic real-time response, secure firmware updates, and compact footprint.

For engineers reviewing the R5F5631JDDFB#V0 datasheet, R5F5631JDDFB#V0 pinout, R5F5631JDDFB#V0 application, or R5F5631JDDFB#V0 equivalent, this page delivers verified technical context, package-specific I/O count (111 pins), Ethernet-excluded peripheral set, and validated alternative options aligned to RX631 Group functional scope.

Technical Context

The R5F5631JDDFB#V0 implements the RX CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates a single-precision IEEE-754 FPU, two multiply-and-accumulate units, and a 32-bit multiplier executing in one CPU clock cycle.

It operates from a single 2.7–3.6 V supply with four low-power modes and supports 100-MHz flash access without wait states. Its peripheral set excludes Ethernet MAC and SDRAM controller - distinguishing it from RX63N Group variants - while retaining CAN (2 channels), 13 SCI interfaces, 4 RIIC channels, and 12-bit/10-bit A/D converters.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631JDDFB#V0, R5F5631KDDFB#V0 trades flash capacity for margin in complex firmware deployments, while R5F5631NDDFB#V0 substitutes thermal rating for identical functionality - neither offers pin-to-pin compatibility beyond shared LQFP-144 mechanical fit.

Availability

R5F5631JDDFB#V0 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and factory gateway applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F5631JDDFB#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, and power solutions for industrial, automotive, and IoT markets.

The RX631 Group targets cost-sensitive industrial control applications where Ethernet is unnecessary but high-performance real-time processing, security, and mixed-signal integration are essential.

FAQ

What is the maximum operating frequency and core performance of the R5F5631JDDFB#V0?

The R5F5631JDDFB#V0 operates at a maximum system clock frequency of 100 MHz and delivers 165 DMIPS of computational throughput using its 32-bit RX CPU core. This performance level supports real-time deterministic execution in industrial control loops and communication stacks without external co-processors.

Does the R5F5631JDDFB#V0 include an Ethernet controller?

No, the R5F5631JDDFB#V0 belongs to the RX631 Group, which explicitly excludes the Ethernet MAC and associated EDMAC peripheral found in the RX63N Group. This omission reduces die size and cost for applications that rely on CAN, USB, or SCI-based networking instead of Ethernet.

How much on-chip flash and SRAM does the R5F5631JDDFB#V0 provide?

The R5F5631JDDFB#V0 integrates 1.5 MB of on-chip flash memory and 256 KB of on-chip SRAM, both accessible at full 100 MHz with zero wait states. This memory configuration supports complex real-time OS deployments and large firmware images while maintaining deterministic access latency.

What analog peripherals are included in the R5F5631JDDFB#V0?

The R5F5631JDDFB#V0 includes a 21-channel 12-bit A/D converter (S12AD), an 8-channel 10-bit A/D converter (AD), two 10-bit D/A converters (DA), and an on-die temperature sensor with ±1°C accuracy. All A/D modules support hardware-triggered sampling and sample-and-hold functionality.

Is the R5F5631JDDFB#V0 supported for IEC 60730 Class B safety certification?

Yes, the R5F5631JDDFB#V0 includes dedicated hardware features for IEC 60730 compliance: oscillation-stop detection, CRC calculator with three polynomials, self-diagnostic A/D test mode, IWDT with independent clock source, and frequency measurement capability - all documented in Renesas' functional safety manual.