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LAN9250/PT

MCHPLAN9250/PT

Microchip Technology
Ethernet Controller 10/100 Base-T/TX PHY I2C, SPI Interface 64-TQFP-EP (10x10)
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Overview

The LAN9250/PT is a high-performance 10/100 Ethernet controller with an integrated PHY designed for embedded systems that lack an internal MAC. It supports flexible host interfaces including SPI, I2C, and an 8/16-bit parallel bus, making it compatible with a wide range of microcontrollers. The device features hardware-based IEEE 1588v2 time stamping and Energy Efficient Ethernet (802.3az) for precise timing and reduced power consumption.

Why Choose This Part

The LAN9250 reduces system complexity by integrating the MAC and PHY into a single 64-TQFP package with a built-in 1.2V regulator for single 3.3V rail operation. It features a large internal buffer capable of storing over 200 packets and supports HP Auto-MDIX to eliminate the need for crossover cables.

Applications

Industrial Automation
Used in PLCs, motor controllers, and human-machine interfaces requiring robust 10/100 Ethernet connectivity and industrial temperature support.
Precision Timing Applications
Utilizes the integrated IEEE 1588v2 hardware time stamp unit for clock synchronization in distributed networked systems.
IoT Gateways
Provides a dedicated Ethernet port for edge computing devices and gateways that require Wake on LAN (WoL) and cable diagnostic capabilities.
Embedded Web Servers
Acts as a standalone Ethernet interface for small 8-bit or 16-bit microcontrollers to host web-based configuration pages.

Key Specifications

Function Controller
Protocol Ethernet
Interface I2C, SPI
Standards 10/100 Base-T/TX PHY
Package / Case 64-TQFP Exposed Pad
Voltage - Supply 1.8V ~ 3.3V
Operating Temperature 0degC ~ 70degC
Supplier Device Package 64-TQFP-EP (10x10)

Getting Started

Start development with the EVB-LAN9250 evaluation board, which provides access to the SPI and parallel host interfaces. Microchip provides a comprehensive C-based driver library and example code for integrating the controller with PIC32 and other MCU architectures. Ensure the 64-TQFP exposed pad is properly soldered to a ground plane for thermal dissipation and signal integrity.

LAN9250/ Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
LAN9250/PT (this part) TQFP-64 138
LAN9250/ML VFQFN-64 304

Also Consider

ENC28J60 MCHPMicrochip Technology - A simpler, lower-cost SPI Ethernet controller for applications that only require 10Base-T speeds.
W5500 WIZnet - Features a hardwired TCP/IP stack which offloads the entire networking protocol from the host MCU.

Categories

Interface ICs > Ethernet PHY