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WIZ-IP51s

WIZ-IP51s

The WIZ-IP51s is a network offloading module that integrates the W5100S chip (with built-in PHY physical layer and TCP/IP hardware protocol stack) and an RJ45 connector with integrated network transformer. As a plug-and-play component, it enables seamless interface connection between the W5100S and the transformer without the need for additional circuit design.

For users who wish to quickly develop networked systems, the WIZ-IP51S is an ideal choice.

All technical issue for WIZIP-51S , please contact WIZnet HK.

Pin Information​

P1​

PinTypeNameDescription
1IMISOSPI Master-In / Slave-Out
2ICLKSPI clock input
3ICSnSPI Master-Out / Slave-In
4PGNDGround
5PVCC3.3 V Power supply
6OACTActivity LED signal
7–LED1-Connect to ACT
8–LED1+Connect in series with resistor to VCC

P2​

PinTypeNameDescription
1IMOSISPI Master-Out / Slave-In
2IINTnInterrupt output (low-active) — indicates socket events like connection, disconnection, data reception, and WOL
3IRSTnHardware reset input (active low, ≥ 500 µs)
4ISCLIIC clock line
5ISDAIIC data cable
6OLINKNetwork connection LED signal
7–LED2-Connect to LINK
8–LED2+Connect in series with resistor to VCC

Wait at least 50 ms after RSTn goes high before SPI communication.

Features​

  • Supports full hardware TCP/IP protocol: TCP, UDP, WOL, ICMP, IGMPv1/v2, IPv4, ARP, PPPoE
  • Supports SOCKET-less instructions: ARP-request, PING-request
  • Supports 4 independent SOCKET concurrent communication
  • Supports half-duplex/full-duplex operation mode
  • Supports Ethernet power-off mode and master clock selection energy-saving mode
  • Supports UDP-based network wake-up (WOL) function
  • High-speed SPI interface (MODE 0/3)
  • Built-in total 16Kbytes of send/receive cache
  • Integrated 10BaseT/100BaseTX Ethernet PHY
  • Supports Ethernet auto-negotiation (full/half-duplex, 10Base-T/100Base-TX)
  • Supports Auto-MDIX function (only supported in Ethernet auto-negotiation mode)
  • Operating voltage: 3.3V (I/O compatible with 5V signal voltage)
  • 19-pin pin header interface
  • Package size (length×width×height):32.5×16.5×17.3(mm)
  • Compatible with WIZnet's IO module carrier board development board

Electrical Characteristics​

SymbolParameterPinsMinTypMaxUnit
VDDSupply voltage3.3 V2.973.33.63V
VIHHigh-level inputALL2.3–5.5V
VILLow-level inputALL–0.3–0.9V
VOHHigh-level outputALL2.93.3–V
VOLLow-level outputALL0.0–0.52V
IDDSupply current (Normal)3.3 V124130137mA

Documentation​

This section provides key documentation, including user manuals and datasheets, to help you understand product features, specifications, and usage.

TitleDescriptionLinkNotes
DatasheetTechnical specifications and features of the W5100s chiplink EN / link 한국어-
note

SPI operation of WIZ-IP51s follows W5100S. For more information about SPI operation of W5100s, please refer to W5100s Datasheet.

Software Resources​

Driver

ResourceDescription
link ioLibrary_DriverOfficial WIZnet driver library for W5100s and other chips
info

The ioLibrary_Driver is an MCU-independent library for WIZnet W5x00, W6x00 chips . It provides implementations of essential TCP/IP services, enabling developers to build network applications with minimal MCU dependencies. Supported services
DHCP, DNS, MQTT, SNTP, TFTP, HTTP Server

Hardware Resources​

TitleRevisionDescriptionDownloadNotes
Schematic1.0Circuit diagram for referenceTBD

Mechanical Information​

  • Form factor: Plug-in Port module
  • Pin pitch: 2.54 mm
  • Dimensions: 32.5 × 16.5 mm
ProductDescription
W5100S ChipHardwired TCP/IP Ethernet controller with integrated PHY