Renesas R5F56316SDLK#U0

Overview

R5F56316SDLK#U0 from Renesas is a 100 MHz 32-bit RXv1 CPU-based microcontroller in the RX63N Group, featuring on-chip FPU, 165 DMIPS performance, 1.5 MB flash, 192 KB SRAM, Ethernet MAC (10/100 Mbps), USB 2.0 host/function/OTG, CAN v2.0B (3 channels), and 12-bit A/D converter (21 ch). It targets industrial networking gateways requiring real-time control, secure communications, and deterministic I/O.

For engineers reviewing the R5F56316SDLK#U0 datasheet, R5F56316SDLK#U0 pinout, R5F56316SDLK#U0 application, or R5F56316SDLK#U0 equivalent, key selection criteria include Ethernet MAC support, 100 MHz timing margin for deterministic ISR execution, 1.5 MB flash for dual-bank firmware updates, 192 KB SRAM for protocol stack buffering, and -40°C to +85°C operation in DIN-rail-mounted controllers.

Technical Context

The R5F56316SDLK#U0 implements the RXv1 core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code density. Its memory protection unit (MPU) supports secure partitioning of application, bootloader, and network stack code spaces.

It integrates dedicated hardware accelerators: Ethernet DMA controller (EDMAC) with 2 KB TX/RX FIFOs, DEU AES engine (128/192/256-bit keys, ECB/CBC), and CRC calculator with three polynomials (X⁸+X²+X+1, X¹⁶+X¹⁵+X²+1, X¹⁶+X¹²+X⁵+1)-all operating without CPU intervention to reduce latency in safety-critical tasks.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A (176-pin LQFP, 24 × 24 mm, 0.5 mm pitch, RoHS compliant). Pinout validated per Renesas R01DS0098EJ0180 Rev.1.80, Table 1.2 and Figure 1.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56318SDLK#U0, the R5F56316SDLK#U0 trades 512 KB flash and 64 KB SRAM for lower unit cost while retaining identical Ethernet, USB, and CAN capabilities-making it optimal for fixed-function gateways with verified firmware footprint. Against R5F56309SDLK#U0, it adds essential Ethernet MAC and 64 KB more SRAM for TCP/IP offload, justifying the premium in connected applications.

Availability

R5F56316SDLK#U0 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, smart energy meters, programmable logic controllers, and building automation controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F56316SDLK#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 industrial, automotive, and IoT markets.

The RX63N Group, including the R5F56316SDLK#U0, was designed for industrial connectivity applications demanding real-time determinism, functional safety support (IEC 60730), and integrated Ethernet/USB/CAN interfaces in a single chip.

FAQ

What is the maximum operating frequency and CPU performance of the R5F56316SDLK#U0?

The R5F56316SDLK#U0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS performance using the 32-bit RXv1 CPU core. This performance level is measured under standard conditions with cache enabled and reflects real-world instruction throughput for industrial control algorithms. The R5F56316SDLK#U0 achieves this with zero-wait-state flash access and a 5-stage pipeline, enabling deterministic execution of time-critical tasks such as EtherNet/IP implicit messaging.

Does the R5F56316SDLK#U0 include an Ethernet MAC, and what interface standards does it support?

Yes, the R5F56316SDLK#U0 includes a fully integrated IEEE 802.3-compliant Ethernet MAC supporting both 10 Mbps and 100 Mbps operation in full- and half-duplex modes. It implements 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. The R5F56316SDLK#U0 does not integrate a PHY; external magnetics and a PHY IC (e.g., LAN8720A) are required for physical layer connectivity.

What are the memory resources available on the R5F56316SDLK#U0?

The R5F56316SDLK#U0 provides 1.5 MB of on-chip flash memory with zero-wait-state access at 100 MHz, 192 KB of on-chip SRAM also with zero-wait access, and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. These resources are mapped into a 4 GB linear address space and support background programming/erasing operations. The R5F56316SDLK#U0 uses these memories for secure firmware storage, protocol stack buffering, and runtime variable allocation without external memory expansion.

How does the R5F56316SDLK#U0 support functional safety standards like IEC 60730?

The R5F56316SDLK#U0 includes multiple hardware features for IEC 60730 Class B compliance: oscillation-stoppage detection for main/subclocks, on-chip CRC calculator with configurable polynomials, independent watchdog timer (IWDT) with dedicated LOCO clock, self-diagnostic function for the 10-bit A/D converter, and memory protection unit (MPU) for runtime code/data isolation. These features are documented in Renesas Application Note R01AN1379JJ0100 and are implemented directly in silicon-no external components are needed to satisfy core diagnostic requirements for household appliance controllers.

What package type and pin count does the R5F56316SDLK#U0 use, and is it RoHS compliant?

The R5F56316SDLK#U0 is supplied in a PLQP0176KB-A package: a 176-pin LQFP measuring 24 mm × 24 mm with 0.5 mm pitch, lead-free and RoHS compliant per EU Directive 2011/65/EU. This package supports 133 general-purpose I/O pins with 5-V tolerance on 18 pins, programmable pull-up resistors, and open-drain capability-enabling direct interfacing with legacy 5 V sensors and actuators without level shifters. Thermal performance is rated for 2.7–3.6 V operation across -40°C to +85°C ambient.