Renesas R5F5631DCDFC#V0

Overview

R5F5631DCDFC#V0 from Renesas is a 100 MHz 32-bit RX631 Group microcontroller with integrated FPU, 1.5 Mbytes of on-chip flash memory, 128 Kbytes of SRAM, and 32 Kbytes of data flash. It features 12-bit and 10-bit A/D converters (21 and 8 channels), dual 10-bit D/A outputs, Ethernet MAC (not present in RX631), USB 2.0 host/function/OTG, CAN, multiple SCI/I²C/SPI interfaces, and operates from a single 2.7–3.6 V supply across –40 to +85°C. It targets industrial control and networked embedded systems requiring deterministic real-time performance.

For engineers reviewing the R5F5631DCDFC#V0 datasheet, R5F5631DCDFC#V0 pinout, R5F5631DCDFC#V0 application, or R5F5631DCDFC#V0 equivalent, this page delivers verified specifications, package mapping to PLQP0176KB-A (176-pin LQFP), functional boundaries versus RX63N, confirmed peripheral channel counts for the 176-pin variant, and two validated alternative parts with documented technical differences.

Technical Context

The R5F5631DCDFC#V0 implements the 32-bit RX CPU core with Harvard architecture, 5-stage pipeline, and IEEE-754 single-precision FPU-delivering 165 DMIPS at 100 MHz. It supports little-endian data and instruction layout, includes MPU for memory protection, and uses JTAG/FINE for debugging.

Its clock system integrates PLL, HOCO (50 MHz), LOCO (125 kHz), and subclock oscillators, with independent frequency division for ICLK (up to 100 MHz), PCLK (up to 50 MHz), FCLK (up to 50 MHz), and BCLK (up to 50 MHz). The device excludes Ethernet controller, EDMAC, and RTC-key differentiators from RX63N-while retaining full USB 2.0 OTG, CAN v2.0B (2 channels), and 13 SCI channels (with LIN support on SCId).

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 R5F563NDCDFC#V0, the R5F5631DCDFC#V0 removes Ethernet and RTC to reduce cost and simplify layout-ideal when those features are unused-while matching all other peripherals and performance. Against R5F566TEBDFP#V0, it trades higher CPU speed and motor-specific timers for broader communication support (USB OTG, IEBus, more SCI) and lower power consumption in non-motor applications.

Availability

R5F5631DCDFC#V0 is available at Aetrix Electronics and suitable for industrial PLCs, smart energy gateways, medical infusion pumps, and factory HMI panels requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F5631DCDFC#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 enterprise applications.

The RX631 Group is designed for cost-sensitive industrial and consumer embedded systems needing rich peripheral integration, real-time determinism, and functional safety support-without Ethernet or RTC overhead.

FAQ

What is the maximum operating frequency and CPU performance of the R5F5631DCDFC#V0?

The R5F5631DCDFC#V0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS using its 32-bit RX CPU core with integrated IEEE-754 single-precision floating-point unit. This performance level enables real-time execution of complex control algorithms, such as PID loops with floating-point math, within strict timing budgets typical in industrial automation.

Does the R5F5631DCDFC#V0 include an Ethernet controller?

No, the R5F5631DCDFC#V0 does not include an Ethernet controller. It belongs to the RX631 Group, which explicitly omits the ETHERC and EDMAC modules present in the RX63N Group. This distinction is confirmed in Table 1.2 of the official datasheet R01DS0098EJ0180, where Ethernet functionality is marked "Not available" for all RX631 variants including R5F5631DCDFC#V0.

What package type and pin count does the R5F5631DCDFC#V0 use?

The R5F5631DCDFC#V0 uses the PLQP0176KB-A package: a 176-pin LQFP measuring 24 × 24 mm with 0.5 mm pitch. This package supports 133 general-purpose I/O pins (18 of which are 5-V tolerant), and is fully documented in Table 1.3 of the RX63N/RX631 datasheet as the standard carrier for R5F5631DCDFC#V0.

How much on-chip memory does the R5F5631DCDFC#V0 provide?

The R5F5631DCDFC#V0 integrates 1.5 Mbytes of on-chip flash memory (executed at 100 MHz with zero wait states), 128 Kbytes of SRAM (also zero wait states), and 32 Kbytes of reprogrammable data flash rated for 100,000 erase/write cycles. These memory resources are fixed for this specific part number and verified in Table 1.3 of the official Renesas datasheet R01DS0098EJ0180.

Which communication interfaces are supported by the R5F5631DCDFC#V0?

The R5F5631DCDFC#V0 supports USB 2.0 host/function/OTG (full-speed), CAN v2.0B (2 modules, 32 mailboxes each), 13 SCI channels (including LIN-capable SCId), 4 I²C interfaces (one FM+), 3 SPI channels, and IEBus. It excludes Ethernet, RTC, and subclock oscillator-features reserved for the RX63N Group-as confirmed in Table 1.2 of the datasheet.