Renesas R5F56318DDLC#U0

Overview

R5F56318DDLC#U0 from Renesas is a 100 MHz 32-bit RX63N Group microcontroller featuring an integrated Ethernet MAC, single-precision IEEE-754 FPU, 165 DMIPS performance, 512 KB 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 and embedded control applications requiring real-time connectivity and deterministic timing.

For engineers reviewing the R5F56318DDLC#U0 datasheet, R5F56318DDLC#U0 pinout, R5F56318DDLC#U0 application, or R5F56318DDLC#U0 equivalent, key selection criteria include Ethernet MAC support (MII/RMII), USB 2.0 host/function/OTG capability, CAN v2.0B compliance with 32 mailboxes, 21-channel 12-bit A/D converter with sample-and-hold, and hardware AES encryption via DEU module.

Technical Context

The R5F56318DDLC#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 DMA controllers-including EXDMAC for TFT LCD transfer and EDMAC for Ethernet offload-alongside a programmable pulse generator (PPG) synchronized to MTU2/TPU timers for precise waveform generation.

Its clock system combines external crystal oscillator support (4–16 MHz), internal 50 MHz HOCO and 125 kHz LOCO, and PLL-based frequency synthesis enabling independent ICLK (up to 100 MHz), PCLK (up to 50 MHz), FCLK (up to 50 MHz), and BCLK (up to 50 MHz) domains. The MCU includes MPU for memory protection and JTAG/FINE debugging interfaces.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin LQFP, 24 × 24 mm, 0.5 mm pitch, RoHS compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56318DDLC#U0, R5F563NEDDLC#U0 provides 3× more flash for complex networking stacks, while R5F56316DDFC#30 removes Ethernet to reduce BOM cost-making it viable only where LAN connectivity is omitted and pin-compatible layout reuse is prioritized.

Availability

R5F56318DDLC#U0 is available at Aetrix Electronics and suitable for industrial gateways, building automation systems, and medical infusion pumps requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F56318DDLC#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 enterprise markets.

The RX63N Group, which includes R5F56318DDLC#U0, was designed for real-time industrial networking applications demanding integrated Ethernet, USB OTG, CAN, and functional safety features-all within a single-chip solution.

FAQ

What is the maximum operating frequency of the R5F56318DDLC#U0?

The R5F56318DDLC#U0 operates at a maximum system clock frequency of 100 MHz, delivering 165 DMIPS performance. This frequency is achieved using the on-chip PLL with external crystal (4–16 MHz) or internal 50 MHz HOCO as reference. All on-chip memories-including 512 KB flash and 128 KB SRAM-support zero-wait-state operation at this speed, ensuring deterministic real-time execution for industrial control tasks.

Does the R5F56318DDLC#U0 include an Ethernet MAC, and what interfaces does it support?

Yes, the R5F56318DDLC#U0 includes a fully integrated IEEE 802.3-compliant Ethernet MAC supporting both 10 Mbps and 100 Mbps operation. It supports MII (Media Independent Interface) and RMII (Reduced MII) physical layer interfaces, along with management functions including MDIO/MDC, Magic Packet™ wake-on-LAN, and IEEE 802.3x flow control. The dedicated EDMAC peripheral enables descriptor-based DMA transfers to minimize CPU load during network traffic.

What are the memory resources available on the R5F56318DDLC#U0?

The R5F56318DDLC#U0 integrates 512 KB of on-chip flash memory with zero-wait-state access at 100 MHz, 128 KB of on-chip SRAM also operating at full speed, and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. The flash supports on-board programming via SWD/JTAG and includes security features such as block protection and unique ID readout. No external memory interface is required for typical industrial applications.

How many A/D converter channels does the R5F56318DDLC#U0 provide, and what is their resolution?

The R5F56318DDLC#U0 includes a 12-bit successive-approximation A/D converter (S12AD) with 21 input channels (AN000–AN020), plus an 8-channel 10-bit A/D converter (ADb). The 12-bit unit achieves 1.0 µs conversion time when operating with a 50 MHz peripheral clock (PCLK), includes a sample-and-hold circuit, and supports software, timer-triggered, or external-event-started conversions. Both units share the same temperature sensor input.

Is the R5F56318DDLC#U0 supported for functional safety standards like IEC60730?

Yes, the R5F56318DDLC#U0 includes multiple hardware features certified for IEC60730 Class B compliance, including oscillation-stop detection, hardware CRC calculator (with three polynomial options), independent watchdog timer (IWDT) with dedicated LOCO clock, and self-diagnostic capability for the 10-bit A/D converter. These features reduce software verification effort and support safety-critical applications such as medical devices and industrial controls without requiring external safety monitors.