LAN9250T/ML

Controllers Overview

The LAN9250T/ML is a single-chip 10/100 Ethernet controller and PHY manufactured by Microchip Technology. It integrates an Ethernet MAC, HP Auto-MDIX PHY, and IEEE 1588v2 hardware timestamping unit. The device supports 10BASE-T and 100BASE-TX standards, with 100BASE-FX support via external transceivers. It features a 16-KByte FIFO buffer, SPI/SQI client interface, and I2C EEPROM controller. Operating voltage ranges from 1.8V to 3.3V, with an integrated 1.2V regulator for single 3.3V supply operation. Available in a 64-pin QFN package.

Controllers Feature Summary

• Integrated Ethernet MAC and PHY with automatic polarity detection and correction
• IEEE 1588v2 precision time protocol support with global tunable clock
• Flexible host bus interfaces including indexed register access and multiplexed address/data bus
• Comprehensive power management with Wake on LAN and multiple wake-up event triggers

Controllers Applications

• Industrial automation systems
• Digital televisions and video recorders
• VoIP and video phone systems
• Home gateways
• Test and measurement equipment

Controllers Procurement Notes

Verify the specific ordering suffix 'T' against the manufacturer's datasheet to confirm tape and reel packaging status. Confirm that the component meets RoHS compliance requirements for your region. Ensure the selected package variant matches your PCB footprint design constraints.

Controllers Selection Notes

Select this controller for embedded applications requiring high performance and low pin count. Verify compatibility with the host system's bus interface, whether indexed register or multiplexed mode. Consider the operating temperature range and ensure the power supply architecture aligns with the integrated regulator capabilities.

Controllers Part Context

The LAN9250 belongs to Microchip's industrial Ethernet controller family. It is designed for cost-effective integration into embedded systems. The device simplifies network connectivity by combining MAC and PHY functions on a single chip, reducing board space and component count compared to discrete solutions.

Controllers Replacement Considerations

LAN9250I/ML

Controllers FAQ

Does the LAN9250 support fiber optic connections?

Yes, the LAN9250 supports 100BASE-FX via an external fiber transceiver connected through dedicated pins.

What is the maximum clock rate for the SPI interface?

The SPI/SQI client interface supports clock rates of up to 80 MHz.

Can the LAN9250 operate with a single 3.3V power supply?

Yes, it includes an integrated 3.3V to 1.2V linear regulator, allowing operation from a single 3.3V supply.