Renesas R5F56318CDLJ#U0

Overview

R5F56318CDLJ#U0 from Renesas is a 100 MHz 32-bit RX63N Group microcontroller featuring an integrated Ethernet MAC (10/100 Mbps), single-precision IEEE-754 FPU, 165 DMIPS performance, 1.5 MB on-chip flash memory, and 128 KB SRAM. It operates from a 2.7–3.6 V supply, supports -40 to +85°C temperature range, and targets industrial networking, gateway, and embedded control applications requiring real-time connectivity and deterministic execution.

For engineers reviewing the R5F56318CDLJ#U0 datasheet, R5F56318CDLJ#U0 pinout, R5F56318CDLJ#U0 application, or R5F56318CDLJ#U0 equivalent, key selection criteria include Ethernet MAC support (vs. RX631), 100 MHz CPU clock with no-wait flash access, 32 Kbytes of reprogrammable data flash (100k cycles), dual A/D converters (12-bit ×21 ch + 10-bit ×8 ch), and USB 2.0 host/function/OTG capability.

Technical Context

The R5F56318CDLJ#U0 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates dedicated hardware accelerators including a Data Encryption Unit (AES-128/192/256 in ECB/CBC modes) and CRC calculator supporting three polynomials for IEC60730 compliance.

Its peripheral subsystem includes a 4-channel DMAC, 2-channel EXDMAC, DTC, and Ethernet-dedicated EDMAC - all operating at up to 50 MHz PCLK. Clock management supports independent division/multiplication for ICLK (100 MHz), PCLK (50 MHz), FCLK (50 MHz), and BCLK (50 MHz), enabling precise domain isolation for real-time determinism.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56318CDLJ#U0, R5F563NDCDLJ offers identical functionality in standard packaging, while R5F563NECDLJ provides 512 KB additional flash for scalable firmware deployment - both maintain full pin, register, and software compatibility.

Availability

R5F56318CDLJ#U0 is available at Aetrix Electronics and suitable for industrial gateways, smart metering systems, and building automation controllers requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.

Supply support for R5F56318CDLJ#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 RX63N Group, including R5F56318CDLJ#U0, was designed for real-time industrial networking applications demanding integrated Ethernet, deterministic timing, functional safety support, and secure firmware execution.

FAQ

What is the maximum operating frequency and core architecture of the R5F56318CDLJ#U0?

The R5F56318CDLJ#U0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instruction set. It delivers 165 DMIPS and includes a single-precision IEEE-754 floating-point unit. This architecture enables deterministic real-time performance critical for industrial control and networking applications where R5F56318CDLJ#U0 is deployed.

Does the R5F56318CDLJ#U0 include an Ethernet MAC, and what interface standards does it support?

Yes, the R5F56318CDLJ#U0 integrates a full-featured Ethernet MAC compliant with IEEE 802.3, supporting 10/100 Mbps operation in full- and half-duplex modes. It implements both MII and RMII physical layer interfaces per IEEE 802.3u, includes Magic Packet™ wake-on-LAN detection, and complies with IEEE 802.3x flow control - making R5F56318CDLJ#U0 suitable for embedded gateways and networked industrial controllers.

What are the memory resources available on the R5F56318CDLJ#U0?

The R5F56318CDLJ#U0 includes 1.5 MB of on-chip flash memory (accessible at 100 MHz with zero wait states), 128 KB of SRAM (also zero-wait), and 32 KB of data flash rated for 100,000 program/erase cycles. These resources support complex real-time firmware, protocol stacks, and secure data logging - all essential for applications where R5F56318CDLJ#U0 serves as the primary system controller.

Is the R5F56318CDLJ#U0 compatible with Renesas' E20 or E1 debug emulators?

Yes, the R5F56318CDLJ#U0 supports both JTAG and FINE (two-wire) debugging interfaces, enabling full compatibility with Renesas E20 and E1 emulators. This allows real-time tracing, breakpoint setting, and memory inspection during development - critical capabilities for validating timing-critical functions in R5F56318CDLJ#U0-based designs such as industrial Ethernet gateways.

What safety and security features does the R5F56318CDLJ#U0 provide for certified applications?

The R5F56318CDLJ#U0 includes hardware-level IEC60730 compliance features: oscillation-stop detection, CRC calculator (with three selectable polynomials), independent watchdog timer (IWDT) with dedicated LOCO clock, and self-diagnostic functions for the A/D converter. It also integrates a Data Encryption Unit (DEU) supporting AES-128/192/256 encryption - all enabling robust safety and security implementation in R5F56318CDLJ#U0-based medical, energy, and industrial systems.