Renesas R5F5631MDDFL#V0

Overview

R5F5631MDDFL#V0 from Renesas is a 100 MHz 32-bit RX CPU-based 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, 10-bit D/A converters, RTC, and USB 2.0 function controller - but no Ethernet MAC or SDRAM interface. It targets cost-optimized industrial control and sensor-edge applications requiring deterministic real-time performance and IEC60730 compliance.

For engineers reviewing the R5F5631MDDFL#V0 datasheet, R5F5631MDDFL#V0 pinout, R5F5631MDDFL#V0 application, or R5F5631MDDFL#V0 equivalent, this page delivers verified specifications, package mapping to PLQP0176KB-A (176-pin LQFP), confirmed peripheral channel counts per package, functional distinctions from RX63N, and two validated alternative parts for migration or sourcing flexibility.

Technical Context

The R5F5631MDDFL#V0 implements the RXv1 CPU core with Harvard architecture, 5-stage pipeline, and IEEE-754 single-precision FPU - delivering 165 DMIPS at 100 MHz. It supports little-endian or big-endian data arrangement and includes MPU for memory protection.

Its clock system integrates PLL, HOCO (50 MHz), LOCO (125 kHz), and subclock oscillator options, with independent frequency division for ICLK (up to 100 MHz), PCLK (up to 50 MHz), FCLK (up to 50 MHz), and BCLK (not supported). Power management includes four low-power modes and battery-backed RTC operation down to 2.3 V.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin LQFP, 24 × 24 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 R5F5631MDDFL#V0, R5F5631EDDFL#V0 offers scalable memory for complex firmware, while R5F5630ADDFL#V0 reduces cost where safety and math acceleration are unnecessary - both require PCB layout verification due to non-pin-compatible footprint variants.

Availability

R5F5631MDDFL#V0 is available at Aetrix Electronics and suitable for industrial automation, smart sensor nodes, home appliance control, and medical diagnostic peripherals requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F5631MDDFL#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-conscious industrial and consumer applications demanding real-time performance, functional safety support, and rich analog integration - without Ethernet or SDRAM overhead.

FAQ

What is the maximum operating frequency and CPU performance of the R5F5631MDDFL#V0?

The R5F5631MDDFL#V0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS using the RXv1 32-bit CPU core. Its 5-stage pipeline, single-precision IEEE-754 FPU, and 32-bit multiplier enable deterministic real-time execution for motor control and signal processing tasks. This performance is sustained across its full operating temperature range of −40°C to +85°C.

Does the R5F5631MDDFL#V0 include an Ethernet MAC or SDRAM controller?

No, the R5F5631MDDFL#V0 does not include an Ethernet MAC or SDRAM controller. It belongs to the RX631 Group, which omits these features present in the RX63N Group. The R5F5631MDDFL#V0 supports only parallel external bus interfaces up to 16-bit width and eight CS areas - making it suitable for applications that do not require high-bandwidth network connectivity or external DRAM expansion.

What are the memory resources available on the R5F5631MDDFL#V0?

The R5F5631MDDFL#V0 integrates 512 KB of on-chip flash memory with zero-wait-state access at 100 MHz, 64 KB of SRAM also with zero-wait-state operation, and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. These resources support robust firmware execution, real-time data buffering, and secure field updates without external memory components.

Which analog peripherals are included in the R5F5631MDDFL#V0?

The R5F5631MDDFL#V0 includes a 21-channel 12-bit successive approximation register (SAR) ADC with sample-and-hold, an 8-channel 10-bit SAR ADC, and two 10-bit voltage-output DACs. It also integrates an on-die temperature sensor with ±1°C accuracy, whose output is digitized by the 12-bit ADC - enabling compact thermal monitoring without external sensors.

Is the R5F5631MDDFL#V0 qualified for functional safety standards like IEC60730?

Yes, the R5F5631MDDFL#V0 includes hardware features required for IEC60730 Class B compliance: oscillation-stop detection, independent watchdog timer (IWDT), CRC calculator with three polynomials, and self-diagnostic capability for the 10-bit A/D converter. These are documented in the R01DS0098EJ0180 datasheet and enable developers to implement certified safety routines without external monitoring ICs.