Renesas R5F5631ECDLJ#U0

Overview

R5F5631ECDLJ#U0 from Renesas is a 100 MHz 32-bit RX CPU-based microcontroller in the RX631 Group, featuring 2 MB on-chip flash memory, 128 KB SRAM, 32 KB data flash, IEEE-754 single-precision FPU, and integrated 12-bit/10-bit A/D converters. It supports USB 2.0 full-speed host/function/OTG, CAN (ISO 11898-1), up to 13 SCI channels, 4 I²C interfaces, and operates from a single 2.7–3.6 V supply across –40 to +85°C. It targets industrial HMI, motor control, and networked sensor nodes requiring deterministic real-time performance without Ethernet.

For engineers reviewing the R5F5631ECDLJ#U0 datasheet, R5F5631ECDLJ#U0 pinout, R5F5631ECDLJ#U0 application, or R5F5631ECDLJ#U0 equivalent, this page delivers verified specifications, package mapping to PTLG0100JA-A (100-pin TFLGA, 7 × 7 mm, 0.65-mm pitch), confirmed peripheral channel counts per package, functional distinctions from RX63N (no Ethernet MAC or EDMAC), and two validated alternative parts for design continuity.

Technical Context

The R5F5631ECDLJ#U0 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates a memory protection unit (MPU), JTAG/FINE debug interfaces, and supports little-endian or big-endian data arrangement - configurable per external bus area.

Its clock system combines an external crystal oscillator (4–16 MHz), internal 50-MHz HOCO and 125-kHz LOCO, plus PLL frequency synthesis. Peripheral modules operate at up to 50 MHz (PCLK), while flash executes at 100 MHz with zero wait states. The device excludes Ethernet MAC and EDMAC - distinguishing it from RX63N variants - and omits RTC, sub-clock oscillator, battery backup, and off-board programming capability per RX631 Group specification.

Key Specifications

Pinout & Package

Package: PTLG0100JA-A - 100-pin Thin Fine-Pitch Land Grid Array, 7 × 7 mm body, 0.65 mm pitch, 0.8 mm height, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F5631ECDLJ#U0, the RX63N alternative adds Ethernet and RTC at higher BOM cost and power, while the RX62T offers superior motor control peripherals but sacrifices USB and general-purpose communication flexibility - making R5F5631ECDLJ#U0 optimal for balanced mixed-signal embedded systems without Ethernet.

Availability

R5F5631ECDLJ#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, HMI panels, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F5631ECDLJ#U0 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 industrial, automotive, and IoT markets.

The RX631 Group is designed for cost-optimized, high-performance embedded applications demanding real-time determinism, rich analog integration, and USB/CAN connectivity - excluding Ethernet to reduce complexity and cost in non-networked edge devices.

FAQ

What is the maximum operating frequency and core architecture of the R5F5631ECDLJ#U0?

The R5F5631ECDLJ#U0 operates at a maximum frequency of 100 MHz and uses the 32-bit RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions. It delivers 165 DMIPS and includes a single-precision IEEE-754 floating-point unit. This architecture enables efficient execution of real-time control algorithms and compact code storage in its 2 MB flash memory - all confirmed in the R01DS0098EJ0180 datasheet for the RX631 Group.

Does the R5F5631ECDLJ#U0 include an Ethernet MAC controller?

No, the R5F5631ECDLJ#U0 does not include an Ethernet MAC controller or associated EDMAC. It belongs to the RX631 Group, which explicitly excludes Ethernet functionality - unlike the RX63N Group. This distinction is documented in Table 1.2 of the R01DS0098EJ0180 datasheet, confirming that Ethernet and EDMAC are unavailable across all RX631 variants, including R5F5631ECDLJ#U0.

What package type and pin count does the R5F5631ECDLJ#U0 use?

The R5F5631ECDLJ#U0 uses the PTLG0100JA-A package: a 100-pin Thin Fine-Pitch Land Grid Array with 7 × 7 mm body size and 0.65 mm pitch. This package is specified in Table 1.3 of the R01DS0098EJ0180 datasheet for RX631 Group devices with 1 MB or greater flash capacity and is RoHS-compliant with lead-free finish.

What are the key differences between the R5F5631ECDLJ#U0 and the R5F563NEDDLJ#U0?

The R5F5631ECDLJ#U0 (RX631) lacks Ethernet MAC, EDMAC, RTC, sub-clock oscillator, battery backup, and off-board programming - features present in the R5F563NEDDLJ#U0 (RX63N). Both share identical flash (2 MB), SRAM (128 KB), and package (PTLG0100JA-A), but RX63N's added peripherals increase power consumption and BOM cost. These differences are formally defined in Table 1.2 of the R01DS0098EJ0180 datasheet.

Is the R5F5631ECDLJ#U0 suitable for IEC 60730 Class B safety compliance?

Yes, the R5F5631ECDLJ#U0 includes hardware features required for IEC 60730 Class B compliance: oscillation-stop detection, CRC calculator, independent watchdog timer (IWDT), self-diagnostic function for the 10-bit A/D converter, and memory protection unit (MPU). These capabilities are explicitly listed in the "Useful functions for IEC60730 compliance" section of the R01DS0098EJ0180 datasheet.