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W5100S

W5100S

Wiznet
Wiznet Ethernet controller family member offering hardware socket support and SPI interface for embedded applications.
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Overview

The W5100S is a hardwired TCP/IP embedded Ethernet controller designed for easy internet connection in small embedded systems. It integrates a 10/100 Ethernet PHY and a hardware-based TCP/IP stack that supports 4 independent sockets simultaneously, significantly reducing the overhead on the host MCU.

Why Choose This Part

The hardware TCP/IP stack offloads protocol processing from the host microcontroller, saving Flash and RAM resources while improving security against network attacks. It supports both SPI and Parallel Bus interfaces, making it compatible with a wide range of 8-bit to 32-bit MCU architectures.

Applications

Industrial Automation
Reliable Ethernet connectivity for PLCs and industrial sensors needing a hardwired stack for stability.
IoT Gateways
Connecting low-power microcontrollers to local networks via SPI for cloud data transmission.
Building Automation
Integrating HVAC and security systems into existing Ethernet infrastructures without complex software stacks.

Key Specifications

Function Controller
Protocol Ethernet
Interface SPI
Standards 10/100 Base-T/TX PHY
Package / Case 48-LQFP
Current - Supply 132mA
Voltage - Supply 2.97V ~ 3.63V
Operating Temperature -40degC ~ 85degC
Supplier Device Package 48-LQFP (7x7)

Getting Started

Developers can use the WIZnet W5100S-EVB-Pico or W5100S-EVB for rapid prototyping. The chip is supported by the ioLibrary, which provides easy-to-use C functions for socket initialization and data transfer.

Also Consider

W5500 WIZnet - Offers 8 independent sockets and a more efficient SPI interface compared to the 4 sockets on the W5100S.
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