Renesas R5F56318CDLK#U0

Overview

R5F56318CDLK#U0 from Renesas is a 100 MHz 32-bit RX63N Group microcontroller with integrated Ethernet MAC, single-precision IEEE-754 FPU, 165 DMIPS performance, 768 KB on-chip flash memory, and 128 KB SRAM. It operates from a 2.7–3.6 V supply, supports -40 to +85°C industrial temperature range, and targets networked industrial control, building automation gateways, and embedded HMI systems requiring deterministic real-time response and secure connectivity.

For engineers reviewing the R5F56318CDLK#U0 datasheet, R5F56318CDLK#U0 pinout, R5F56318CDLK#U0 application, or R5F56318CDLK#U0 equivalent, key selection criteria include Ethernet MAC support (MII/RMII), USB 2.0 host/function/OTG capability, dual 10-bit DAC channels, 21-channel 12-bit ADC with sample-and-hold, AES-128/192/256 DEU encryption, and 145-pin TFLGA package with 111 general-purpose I/O pins including 18 with 5-V tolerance.

Technical Context

The R5F56318CDLK#U0 implements the RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates dedicated hardware accelerators including a DMA controller (4 channels), EXDMA controller (2 channels), and data transfer controller (DTC) for offloading peripheral-to-memory transfers without CPU intervention.

Its clock system combines external crystal oscillator support (4–16 MHz), internal PLL, 125-kHz LOCO, and 50-MHz HOCO - all configurable via independent dividers/multipliers for ICLK (up to 100 MHz), PCLK (up to 50 MHz), FCLK (up to 50 MHz), and BCLK (up to 50 MHz). The MCU includes MPU, JTAG/FINE debug interfaces, and IEC60730-compliant safety features like oscillation-stop detection and CRC calculator.

Key Specifications

Pinout & Package

Package: 145-pin TFLGA (PTLG0145KA-A), 7 × 7 mm, 0.5-mm pitch, 111 general-purpose I/O pins, 18 of which are 5-V tolerant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit industrial MCU applications.

Compared with R5F56318CDLK#U0, R5F563NEDDLK#U0 offers scalable flash capacity for feature-rich firmware while maintaining identical I/O and timing behavior, whereas R5F56317CDLK#U0 removes Ethernet/USB to reduce cost and power in isolated control nodes - both require no PCB redesign but serve distinct connectivity tiers.

Availability

R5F56318CDLK#U0 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, building automation controllers, and secure embedded HMIs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for ISO 9001-certified production.

Supply support for R5F56318CDLK#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 RX63N Group, including R5F56318CDLK#U0, was designed for industrial networking applications demanding real-time determinism, functional safety compliance (IEC60730), and integrated connectivity - bridging legacy fieldbuses to modern Ethernet infrastructures.

FAQ

What is the maximum operating frequency and core architecture of the R5F56318CDLK#U0?

The R5F56318CDLK#U0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instruction set. It delivers 165 DMIPS performance and includes single-precision IEEE-754 floating-point unit (FPU) for real-time math-intensive tasks such as motor control algorithms or sensor fusion in industrial applications. This core is fully supported by Renesas' e2 studio IDE and GCC-based toolchain.

Does the R5F56318CDLK#U0 support Ethernet connectivity, and what physical layer interfaces does it include?

Yes, the R5F56318CDLK#U0 integrates a full IEEE 802.3-compliant Ethernet MAC supporting both MII and RMII physical layer interfaces at 10/100 Mbps. It includes dedicated EDMAC hardware for descriptor-based DMA transfers, 2 KB TX/RX FIFOs, Magic Packet wake-on-LAN, and IEEE 802.3x flow control. The R5F56318CDLK#U0 requires an external PHY (e.g., LAN8720A) but handles all MAC-layer framing, filtering, and interrupt generation internally.

What are the memory resources available on the R5F56318CDLK#U0, and how are they accessed?

The R5F56318CDLK#U0 includes 768 KB of on-chip flash memory (zero-wait-state at 100 MHz), 128 KB of SRAM (zero-wait-state), and 32 KB of reprogrammable data flash (rated for 100,000 erase/write cycles). Flash supports on-board programming via SWD/JTAG or background operation (BGO) for firmware updates without halting execution. SRAM is unified for code and data, and supports deep software standby backup. All memory is accessed via the 4-Gbyte linear address space of the RXv1 core.

Which analog peripherals are integrated into the R5F56318CDLK#U0, and what are their key specifications?

The R5F56318CDLK#U0 integrates a 21-channel 12-bit successive approximation register (SAR) ADC (S12ADa) with 1.0 μs conversion time at 50 MHz PCLK, sample-and-hold circuit, and flexible trigger sources (timers, software, external pins). It also includes an 8-channel 10-bit ADC (ADb) and two 10-bit voltage-output DACs (DAa) with 0–VREFH range. Additionally, it features an on-die temperature sensor with ±1°C accuracy digitized through the 12-bit ADC channel.

What security and functional safety features does the R5F56318CDLK#U0 provide for industrial applications?

The R5F56318CDLK#U0 includes hardware-based security and safety features aligned with IEC60730 Class B requirements: AES-128/192/256 encryption/decryption (DEU), CRC calculator with three polynomials, independent watchdog timer (IWDT) with dedicated 125-kHz oscillator, oscillation-stop detection, self-diagnostic A/D converter test, and memory protection unit (MPU). These enable secure firmware updates, runtime integrity checks, and fail-safe behavior in certified industrial control systems.