W3150A+

Overview

The W3150A+ is a hardwired TCP/IP embedded Ethernet controller manufactured by WIZnet. It integrates the MAC, PHY, and TCP/IP protocol stack to facilitate network connectivity in embedded systems. The device supports 10/100 Base-T Ethernet with auto-detection capabilities. Key protocols include TCP, UDP, IP Ver.4, DHCP, ARP, ICMP, IGMP, and PPPoE. It provides four independent hardware sockets for simultaneous connections. Internal memory consists of 16KB dual-port RAM serving as data buffers. The chip offers direct bus, indirect bus, and SPI interfaces for MCU integration. Power supply voltage ranges from 2.97V to 3.63V.

Feature Summary

• Hardwired TCP/IP protocol stack supporting multiple connection protocols
• Integrated 10/100 Base-T Ethernet MAC and PHY with auto-detection
• Four independent hardware sockets for concurrent network operations
• Standard MII interface for physical layer connectivity

Applications

• Virtual instrument general Ethernet interface design
• Embedded system internet connectivity
• ADSL connection via PPPoE
• IoT devices requiring TCP/IP offloading

Procurement Notes

Verify component status carefully as the W3150A+ is listed as obsolete or end-of-life by major distributors. Availability is restricted, and sourcing may require checking secondary markets or alternative suppliers. Confirm package type and revision level against original design specifications before procurement to ensure compatibility.

Selection Notes

Select this component when a complete hardware TCP/IP solution is required without complex software stacks. It is suitable for microcontrollers lacking sufficient processing power for network tasks. Ensure the host MCU supports the available bus interfaces (SPI, Direct, Indirect). Consider newer models if long-term supply stability is critical for production.

Part Context

WIZnet specializes in full-hardware TCP/IP Ethernet controllers using TOE technology. The W3150A+ belongs to their earlier generation of embedded Ethernet chips designed to simplify network integration. It complements other series like W5100 and W5500 but focuses on specific protocol support including ADSL PPPoE.

Replacement Considerations

Check W5100 or W5500 datasheets for pinout and feature compatibility. Verify if the target application requires PPPoE support specifically, as newer chips may have different default protocol configurations.