W5100 Overview
It can be found in the 80-LQFP package that you can download. Easy-to-carry Tray-shaped packaging. It is important to regulate the temperature to -40°C~85°C in order to ensure reliable operation. You should be able to use it as long as you use 3V~3.6VV power. There are 80 terminations in this circuit. 3.3V supply voltage allows high efficiency. 80 pins are needed for operation. The gadget's supply current is set to 5μA. The supply voltage should be set to 3.3V for maximum efficiency. Currently, there are 4 channels available on the internet. For operation, it has a maximum supply current of 183mA.
W5100 Features

W5100 Applications
There are a lot of WIZnet
W5100 Controllers Interface ICs applications.

Notebook PCs
Notebook Docking stations
LAN Servers
PC Motherboards
0 to 10V Dimming Luminaires
Dimmable LED Power Supply
Dimming Control Devices
Commercial LED Lighting
Smart LED Lighting
Portable Appliances

Factory Lead Time	4 Weeks
Mount	Surface Mount
Package / Case	80-LQFP
Number of Pins	80
Weight	639.990485mg
Operating Temperature	-40°C~85°C
Packaging	Tray
Published	2011
Part Status	Active
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Number of Terminations	80
Voltage - Supply	3V~3.6V
Terminal Position	QUAD
Terminal Form	GULL WING
Supply Voltage	3.3V
Function	Controller
Qualification Status	Not Qualified
Operating Supply Voltage	3.3V
Number of Channels	4
Interface	SPI
Operating Supply Current	5μA
Supply Current-Max	183mA
Data Rate	100 Mbps
Protocol	Ethernet
Simplex/Duplex	Full Duplex
Standards	10/100 Base-T/TX PHY
Height	1.4mm
Length	10mm
Width	10mm
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free