WIZnet W5100S-Q


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SKU: 1490027
  1. Product: WIZnet W5100S-Q
  2. Ethernet: I/F PHY
  3. Operating Temperature: -40 … + 85 °C
  4. Operating Voltage: 3.3 V
  5. Functions: 3-in-1, TCP/IP+MAC+PHY
  6. Auto Negotiation: Yes


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Brand: WIZnet
Category: Interface ICs

The W5100S is a Hardwired TCP/IP embedded Ethernet Controller that enables easier Internet Connection for embedded Systems using SPI (Serial Peripheral Interface) and Parallel Bus.

W5100S suits users in need of stable Internet Connectivity Best, using a single chip to implement TCP/IP Stack, 10/100 Ethernet MAC, and PHY. The implemented Hardwired TCP/IP stack supports TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE which has been proven through various Applications over many years. W5100S uses a 16 Kbytes Internal Buffer as its Data Communication Memory.

By using W5100S, 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.


  1. 48QFN lead-free package (7x7mm, 0.5mm pitch)
  2. Host Interface: SPI (up to 70MHz, mode 0, 3) and Parallel System Bus with 2 Address signals and 8 Bits Data
  3. Unattackable hardware engine for preventing network attacks such as flooding, spoofing, injection
  4. 4 Independent hardware sockets simultaneously
  5. supports various Internet Protocols: TCP, UDP, WOL over UDP, ICMP, IGMPv1/v2, IPv4, ARP, PPPoE
  6. Internal 16 Kbytes memory for TCP/IP packet processing
  7. socket-less commands possible: ARP request and ping requests
  8. 10BaseT / 100Base TX Auto Negotiable Ethernet PHY Embedded
  9. Auto-MDIX in auto-negotiation mode (Half/Full Duplex, 10/100 MBit/s speed)
  10. IP fragmentation not supported, ARP-cache table will not be stored permanently
  11. 3.3V operating voltage with 5V I/O signal tolerance
  12. LED outputs (full/half duplex, link, 10/100 speed, active)
  13. Reduced heat dissipation (W5500: 40℃ / other chips : 60-70℃)
  14. Efficient power operation: power down & main clock gating as well as wake-on LAN over UDP


  1. Ethernet: I/F PHY
  2. Operating Temperature: -40 … + 85 °C
  3. Operating Voltage: 3.3 V
  4. Functions: 3-in-1, TCP/IP+MAC+PHY
  5. Auto Negotiation: Yes
  6. Network sockets count: 4
  7. internal DPRAM buffer memory: 16 kB
  8. Package :QFN
  9. pin count: 48
  10. auto MDIX: Yes
  11. Wake on Lan: Yes
  12. Power Down Mode: Yes
  13. typ. Power Consumption: tbd
  14. SPI (max. speed): 70 MHz
  15. MCU I/F 8 bit (indirect),: SPI
  16. PHY chip: W5100S
  17. pin pitch: 0.50 mm
  18. MII: No
  19. Ethernet Speed: 10/100
  20. parallel memory bus: 8bit indirect

Package Includes:

1 x WIZnet W5100S-Q

SKU: 1490027 Category:
Shipping Weight 0.001 kg
Shipping Dimensions 7 × 7 × 1 cm
6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China