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The W3150A+ chip is a Hardwired TCP/IP embedded Ethernet controller that enables easier Internet connection for embedded systems.

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QuantityPriceYou Save
160 HKD23.30 Up to HKD496.00
1600 HKD21.00 Up to HKD8,640.00

Data sheet

Embedded CoreTCP/IP & MAC
Host Interface8bit BUS, SPI
TX/RX Buffer16KB
Number of Hardware Socket4
Network PerformanceMax 25Mbps
Operation Temp (℃)-40 ~ 85
Package Type64LQFP (10x10)

More info


  • Fully hardwired network protocol & MAC
  • Direct & Indirect BUS &  SPI for Host Interface
  • Various External PHY usable such as Switching PHY
  • Stable Data Communication

W3150A+ suits users in need of stable Internet connectivity best, using a single chip to implement TCP/IP Stack & 10/100 Ethernet MAC . Hardwired TCP/IP stack supports TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE, …, which has been proven through various applications over many years. W3150A+ uses a 16Kbytes internal buffer as its data communication memory.

By using W3150A+, 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 & SPI (Serial Peripheral Interface) is provided for easy integration with the external MCU.

As it doesn’t have the PHY, users can interface any external PHY such as switching PHY according to their requirement.

Key Features

  • 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 0,3)
  • 4 Independent hardware socket
  • Internal 16Kbytes memory for TCP/IP packet processing
  • MII Interface for Ethernet PHY chip
  • 3.3V Operation with 5V I/O signal tolerance
  • 64LQFP lead-free package (10x10mm)

Block Diagram


Datasheet W3150A+ Chip Datasheet v2.0.5

  • Last Update: 2015.10.05

Errata sheet W3150A+ Chip Errata sheet v2.6

  • Last Update: 2015.10.05

Qualification Report W3150A+ Qualification Report

  • W3150A+ Temperature Test Report (High & Low Temperature)
  • W3150A+ RoHS Report

Application Note W3150A+ Application Note

  • W3150A+ SPI Guide (W5100)
  • How to implement ADLS (PPPoE)
  • How to implement Multi-Casting

Drivers / Protocol Libraries

io Library W3150A+ ioLibrary (Driver) 

  • W3150A+ Driver V1.0.9

Reference Schematic W3150A+ Reference Schematic

  • Last Update: 2009.01.09
  • Version : 1.0


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The W3150A+ chip is a Hardwired TCP/IP embedded Ethernet controller that enables easier Internet connection for embedded systems.