Renesas R5F5631ADDLJ#U0

Overview

R5F5631ADDLJ#U0 from Renesas is a 100 MHz 32-bit RX631 Group microcontroller with integrated FPU, 768 KB flash, 128 KB SRAM, and 32 KB data flash. It features a 12-bit A/D converter (21 channels), 10-bit A/D converter (8 channels), dual 10-bit D/A outputs, Ethernet MAC (not present), USB 2.0 host/function, CAN (2 channels), 13 SCI interfaces, 4 I²C buses, and real-time clock. It targets industrial control systems requiring deterministic timing, secure firmware updates, and multi-protocol connectivity without Ethernet.

For engineers reviewing the R5F5631ADDLJ#U0 datasheet, R5F5631ADDLJ#U0 pinout, R5F5631ADDLJ#U0 application, or R5F5631ADDLJ#U0 equivalent, this MCU delivers verified 165 DMIPS performance, IEEE-754 single-precision floating-point support, AES-128/192/256 encryption via DEU, IEC60730 safety functions, and -40°C to +85°C operation in a 100-pin TFLGA package.

Technical Context

The R5F5631ADDLJ#U0 implements the RXv1 CPU core with 5-stage CISC Harvard pipeline, variable-length instructions, and memory protection unit (MPU). It supports little-endian data and instruction layout, with on-chip 32×32→64-bit multiplier and 32÷32→32-bit divider.

Its peripheral set excludes Ethernet controller and SDRAM interface (distinguishing it from RX63N), but retains full USB 2.0 host/function/OTG, dual CAN modules (32 mailboxes total), 13-channel SCI with smart-card and LIN modes, and parallel data capture unit (PDC) for image sensor interfacing - all synchronized to independent PCLK, FCLK, and BCLK domains.

Key Specifications

Pinout & Package

Package: 100-pin TFLGA (PTLG0100JA-A), 7 mm × 7 mm, 0.65 mm pitch, 0.8 mm height, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F563NADDLJ#U0, the R5F5631ADDLJ#U0 removes Ethernet and SDRAM to reduce BOM cost and power, while retaining identical flash/SRAM, crypto, safety, and communication peripherals - making it optimal for CAN/USB-based embedded controllers where wired networking is unnecessary. Against RX66T alternatives, it trades peak motor-control timing resolution for broader general-purpose I/O and protocol flexibility.

Availability

R5F5631ADDLJ#U0 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, building automation controllers, medical handheld diagnostics, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F5631ADDLJ#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 automotive, industrial, and IoT markets.

The RX631 Group is designed for cost-sensitive industrial and consumer applications requiring robust real-time performance, functional safety compliance (IEC60730), and multi-protocol connectivity - without Ethernet or SDRAM overhead.

FAQ

What is the maximum operating frequency and core architecture of the R5F5631ADDLJ#U0?

The R5F5631ADDLJ#U0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core with a 5-stage pipeline, CISC Harvard architecture, and variable-length instructions. It achieves 165 DMIPS performance and includes a single-precision IEEE-754 floating-point unit, 32×32 multiplier, and 32÷32 divider - all confirmed in Renesas document R01DS0098EJ0180.

Does the R5F5631ADDLJ#U0 include an Ethernet controller?

No, the R5F5631ADDLJ#U0 belongs to the RX631 Group and explicitly excludes the Ethernet MAC and associated EDMAC peripheral. This distinguishes it from the RX63N Group (e.g., R5F563NADDLJ#U0), which integrates full IEEE 802.3 10/100 Mbps support. The R5F5631ADDLJ#U0 retains USB 2.0, CAN, SCI, I²C, and SPI for non-Ethernet networked applications.

What are the memory resources available on the R5F5631ADDLJ#U0?

The R5F5631ADDLJ#U0 integrates 768 KB of on-chip flash memory (zero-wait-state at 100 MHz), 128 KB of SRAM (zero-wait-state, supports backup in deep software standby), and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. These values are specified in Table 1.3 of R01DS0098EJ0180 for the "R5F5631ADDLJ" part number with D-version temperature grade.

Which communication interfaces does the R5F5631ADDLJ#U0 support?

The R5F5631ADDLJ#U0 supports USB 2.0 full-speed host/function/OTG (1 port each), two CAN 2.0B modules (32 mailboxes total), 13 SCI channels (with LIN, smart-card, and SPI/I²C emulation modes), four I²C buses (one FM+), three SPI interfaces, and one IEBus channel - all documented in Table 1.2 and Section 1.1 of R01DS0098EJ0180.

Is the R5F5631ADDLJ#U0 qualified for industrial temperature operation?

Yes, the R5F5631ADDLJ#U0 is the D-version part, rated for operation from -40°C to +85°C. Its 100-pin TFLGA package (PTLG0100JA-A) and internal circuitry are qualified across this full industrial temperature range, with specifications including supply voltage (2.7–3.6 V), A/D accuracy, and timing parameters validated under these conditions per Renesas documentation.