Renesas R5F5631ADDLC#U0

Overview

R5F5631ADDLC#U0 from Renesas is a 100 MHz 32-bit RX CPU-based microcontroller in the RX631 Group, featuring 768 KB on-chip flash memory, 128 KB SRAM, 32 KB data flash, and integrated 12-bit/10-bit A/D converters, 10-bit D/A converters, RTC, and CAN interface - designed for industrial control and embedded networking applications without Ethernet.

For engineers reviewing the R5F5631ADDLC#U0 datasheet, R5F5631ADDLC#U0 pinout, R5F5631ADDLC#U0 application, or R5F5631ADDLC#U0 equivalent, this MCU delivers deterministic real-time performance with IEEE-754 FPU, memory protection unit (MPU), JTAG/FINE debug support, and IEC60730 safety features - critical for motor control, HMI, and programmable logic controller designs.

Technical Context

The R5F5631ADDLC#U0 implements the RXv1 CPU core with 5-stage CISC Harvard pipeline, supporting 165 DMIPS at 100 MHz and single-cycle 32×32-bit multiply. It integrates a memory protection unit (MPU), dual-clock domain (ICLK up to 100 MHz, PCLK up to 50 MHz), and low-power modes including deep software standby with SRAM retention.

Its peripheral set includes three CAN modules (ISO 11898-1 compliant, 32 mailboxes each), up to 13 SCI channels (with UART, SPI, I²C, LIN, smart-card modes), four I²C interfaces (1 Mbps max), three RSPI ports, and a parallel data capture unit (PDC) - all mapped to 111 GPIO pins on the 144-pin LQFP package with 5-V tolerant inputs.

Key Specifications

Pinout & Package

Package: PLQP0144KA-A - 144-pin LQFP, 20 × 20 mm, 0.5 mm pitch, RoHS-compliant, surface-mount. Thermal pad exposed on underside for enhanced heat dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F563NADDLC#U0, the R5F5631ADDLC#U0 omits Ethernet hardware to reduce cost and power while retaining full CAN, USB, and safety features - making it optimal for cost-sensitive industrial nodes. Against R5F566TEBDFP, it trades raw speed for broader peripheral coverage and legacy protocol support.

Availability

R5F5631ADDLC#U0 is available at Aetrix Electronics and suitable for industrial motor control, building automation HMI, and programmable logic controller applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F5631ADDLC#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, and power solutions for automotive, industrial, and IoT markets.

The RX631 Group is engineered for cost-optimized industrial control applications - delivering real-time determinism, functional safety compliance (IEC60730), and rich connectivity (CAN, USB, SCI) without Ethernet overhead.

FAQ

What is the maximum operating frequency of the R5F5631ADDLC#U0?

The R5F5631ADDLC#U0 operates at a maximum system clock frequency of 100 MHz, enabling 165 DMIPS performance. This frequency is sustained across its full −40°C to +85°C operating range with 2.7–3.6 V supply, and all on-chip memories (flash, SRAM, data flash) operate at zero wait states at this speed. The R5F5631ADDLC#U0 achieves this via an on-chip PLL that multiplies the external crystal or internal oscillator signal to generate the required ICLK.

Does the R5F5631ADDLC#U0 include an Ethernet controller?

No, the R5F5631ADDLC#U0 belongs to the RX631 Group, which explicitly excludes the Ethernet MAC (ETHERC) and associated EDMAC found in the RX63N Group. This distinction is confirmed in Renesas documentation: "RX63N Group products incorporate an Ethernet controller while RX631 Group products do not." The R5F5631ADDLC#U0 retains CAN, USB 2.0, SCI, I²C, and RSPI for industrial networking - making it ideal for applications where CAN bus suffices and Ethernet adds unnecessary cost and complexity.

What package type and pin count does the R5F5631ADDLC#U0 use?

The R5F5631ADDLC#U0 is supplied in 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, and supports full peripheral mapping for CAN, USB, multiple SCI channels, and analog interfaces. Its exposed thermal pad enhances thermal performance in continuous industrial operation.

How much on-chip memory does the R5F5631ADDLC#U0 have?

The R5F5631ADDLC#U0 integrates 768 KB of on-chip main flash memory, 128 KB of SRAM, and 32 KB of reprogrammable data flash (rated for 100,000 erase/write cycles). Flash and SRAM both operate at zero wait states up to 100 MHz, ensuring deterministic execution and low-latency data access. The data flash supports background programming/erasing (BGO), allowing firmware updates without halting application code.

Is the R5F5631ADDLC#U0 qualified for industrial temperature operation?

Yes, the R5F5631ADDLC#U0 is rated for industrial temperature operation from −40°C to +85°C (D version), as specified in Renesas' official documentation. This qualification covers all electrical characteristics, timing parameters, and peripheral functionality across the full range. The device also supports battery-backed RTC operation down to 2.3 V, enabling reliable timekeeping in wide-voltage industrial power environments.