My Cart 0 items: €0.00


Double click on above image to view full picture

Zoom Out
Zoom In

More Views


Excl. Tax: €3.20 Incl. Tax: €3.81
  • Buy 100 for €2.80 (€3.33 incl. tax) each and save 13%
  • Buy 1000 for €2.50 (€2.98 incl. tax) each and save 22%

Quick Overview

3 in 1 chip for the Internet connectivity
Hardwired TCP/IP + MAC + PHY
SPI Interface (Mode 0) and indirect parallel bus


All-in-One Ethernet Controller

Product Description

The W5100 chip is a Hardwired TCP/IP embedded Ethernet controller that enables easier Internet connection for embedded systems. W5100 suits users in need of stable Internet connectivity best, using a single chip to implement TCP/IP Stack, 10/100 Ethernet MAC and PHY. Hardwired TCP/IP stack supports TCP, UDP, IPv4, ICMP, ARP, IGMP and PPPoE, which has been proven through various applications over many years. W5100 uses a 16 kBytes internal buffer as its data communication memory. By using W5100, users can implement the Ethernet application they need by using a simple socket program instead of handling a complex Ethernet Controller. It is possible to use 4 independent hardware sockets simultaneously. Bus (Direct & Indirect) & SPI (Serial Peripheral Interface) are provided for easy integration with the external MCU.


  • 80LQFP lead-free package (10x10mm)
  • Hardwired TCP/IP protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
  • Un-attackable hardware network engine for preventing network attacks such as flooding, spoofing, injection
  • Host Interface : Direct/Indirect Bus & Serial Peripheral Interface (SPI MODE 0)
  • 4 Independent hardware socket
  • Internal 16Kbytes memory for TCP/IP packet processing
  • 10BaseT / 100Base TX Ethernet PHY Embedded
  • Support Auto-Negotiation (Full & Half Duplex, 10 & 100 Based)
  • Support Auto-MDIX
  • 3.3V Operation with 5V I/O signal tolerance
  • LED outputs (TX, RX, full/half duplex, Collision, link, speed)


Related Links

W5100 Data sheet v1.2.7

W5100 ioLibrary v.190

More references for W5100 in the WIZnetMuseumLogo WIZnetMuseum

Additional Information

Dimension 10 x 10 mm
Ethernet I/F PHY
Operating Temperature -40°C to +85°C
Operating Voltage 3.3V / 5V
Functions 3-in-1, TCP/IP+MAC+PHY
Auto Negotiation Yes
Network sockets count 4
internal DPRAM buffer memory 16 kB
Package LQFP
pin count 80
auto MDIX Yes
Wake on Lan No
Power Down Mode No
typ. Power Consumption 183 mA
SPI (max. speed) 15 MHz
MCU I/F 8 bit (indirect), DMA, SPI
PHY chip internal
pin pitch No
Ethernet Speed 10/100
parallel memory bus 8bit indirect
Manufacturer No

You may also be interested in the following product(s)



Excl. Tax: €2.70 Incl. Tax: €3.21 As low as: €2.26


Excl. Tax: €19.50 Incl. Tax: €23.21 As low as: €16.54

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.