Renesas R5F56318DDBG#U0

Overview

R5F56318DDBG#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 and IoT edge nodes requiring deterministic real-time response and secure connectivity.

For engineers reviewing the R5F56318DDBG#U0 datasheet, R5F56318DDBG#U0 pinout, R5F56318DDBG#U0 application, or R5F56318DDBG#U0 equivalent, key selection criteria include Ethernet MAC support (MII/RMII), 12-bit A/D converter with 21 channels, AES-128/192/256 encryption via DEU, USB 2.0 host/function/OTG capability, and 133 general-purpose I/O pins with 5-V tolerance.

Technical Context

The R5F56318DDBG#U0 implements the RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code density. It integrates dedicated DMA controllers (DMAC, EXDMAC, DTC) and an Ethernet-specific EDMAC to offload frame processing, reducing CPU overhead during 10/100 Mbps traffic.

Its clock system combines external crystal oscillator support (4–16 MHz), internal HOCO (50 MHz) and LOCO (125 kHz), plus PLL-based frequency synthesis for precise ICLK/PCLK/FCLK/BCLK domain separation-critical for synchronized peripheral operation at up to 100 MHz CPU speed and 50 MHz bus timing.

Key Specifications

Pinout & Package

Package: PLBG0176GA-A - 176-pin Low-Profile Fine-Pitch Ball Grid Array (LFBGA), 13 mm × 13 mm, 0.8 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56318DDBG#U0, R5F5631BDDBG#U0 offers greater flash headroom for future feature expansion, while R5F56308DDBG#U0 removes Ethernet functionality-making it unsuitable for wired networked applications but viable for CAN-based distributed control where PHY cost must be minimized.

Availability

R5F56318DDBG#U0 is available at Aetrix Electronics and suitable for industrial automation, smart energy gateways, and networked medical devices requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F56318DDBG#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX63N Group, including R5F56318DDBG#U0, was designed for deterministic real-time control in networked industrial equipment-integrating Ethernet, USB, CAN, and security features without compromising MCU performance or power efficiency.

FAQ

What is the maximum operating frequency of the R5F56318DDBG#U0?

The R5F56318DDBG#U0 operates at a maximum system clock frequency of 100 MHz, delivering 165 DMIPS performance. This frequency is achieved using the on-chip PLL driven by an external 4–16 MHz crystal or internal oscillators, with independent clock domains (ICLK, PCLK, FCLK, BCLK) ensuring synchronized peripheral operation without timing conflicts. The R5F56318DDBG#U0 maintains this speed across its full -40 to +85°C operating range under 2.7–3.6 V supply conditions.

Does the R5F56318DDBG#U0 include an Ethernet MAC, and what interfaces does it support?

Yes, the R5F56318DDBG#U0 includes a fully integrated IEEE 802.3-compliant Ethernet MAC supporting both MII and RMII physical layer interfaces at 10/100 Mbps in full- and half-duplex modes. It features dedicated EDMAC hardware for descriptor-based DMA transfers, 2 KB TX/RX FIFOs, Magic Packet™ wake-on-LAN detection, and IEEE 802.3x flow control. These capabilities are exclusive to the RX63N Group and absent in the RX631 Group variants like R5F56308DDBG#U0.

What security features are implemented in the R5F56318DDBG#U0?

The R5F56318DDBG#U0 integrates a Data Encryption Unit (DEU) supporting AES-128/192/256 encryption and decryption in ECB and CBC modes, plus hardware CRC calculation with three configurable polynomials. It also includes memory protection unit (MPU) enforcement, register write protection, oscillation-stop detection, and independent watchdog timer (IWDT) with dedicated 125 kHz clock-collectively enabling IEC 60730 Class B compliance. These features are confirmed in the R01DS0098EJ0180 datasheet for the R5F56318DDBG#U0.

How much flash and RAM does the R5F56318DDBG#U0 have, and are they zero-wait-state?

The R5F56318DDBG#U0 contains 768 KB of on-chip main flash memory and 128 KB of SRAM, both accessible at zero wait states when operating at the maximum 100 MHz system clock frequency. Flash supports on-board programming via SWD or JTAG, and SRAM includes backup capability during deep software standby mode. These capacities are fixed for the R5F56318DDBG#U0 variant and differ from other RX63N members such as R5F5631BDDBG#U0 (1 MB flash) or R5F56308DDBG#U0 (same memory but no Ethernet).

What is the package type and pin count of the R5F56318DDBG#U0?

The R5F56318DDBG#U0 uses the PLBG0176GA-A package: a 176-ball Low-Profile Fine-Pitch Ball Grid Array measuring 13 mm × 13 mm with 0.8 mm ball pitch. It provides 133 general-purpose I/O pins, including 18 with 5-V tolerance, and supports JTAG and FINE debugging interfaces. This package is shared across multiple RX63N variants and is distinct from LQFP or TFLGA options used by other members of the family.