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LAN9221-ABZJ

MCHPLAN9221-ABZJ

Microchip Technology
Ethernet Controller 10/100 Base-T/TX PHY Parallel Interface 56-QFN (8x8)
Active4,382 in stock

Overview

The LAN9221-ABZJ is a high-performance 10/100 Ethernet controller featuring an integrated PHY and a flexible parallel interface. It is designed for embedded systems that require robust networking capabilities with a simple SRAM-like host bus interface, supporting both big and little-endian architectures.

Why Choose This Part

This controller simplifies design by integrating a 1.8V regulator and providing a glueless SRAM-like interface that connects easily to most microcontrollers and FPGAs. It features sophisticated power management, including Wake on LAN and multiple low-power modes, while maintaining 5V-tolerant I/O for compatibility with diverse logic levels.

Applications

Industrial Automation
Providing reliable wired connectivity for PLC and factory floor controllers using its integrated checksum offload engine to reduce CPU overhead.
Embedded VoIP
Utilizing the high-speed parallel interface and internal 16KB RAM for low-latency packet processing in voice applications.
Networked Storage
Acting as a gateway for small-scale NAS devices where a dedicated Ethernet MAC/PHY is required without a complex PCIe bus.

Key Specifications

Function Controller
Protocol Ethernet
Interface Parallel
Standards 10/100 Base-T/TX PHY
Package / Case 56-VFQFN Exposed Pad
Current - Supply 85mA
Voltage - Supply 3.3V
Operating Temperature 0degC ~ 70degC
Supplier Device Package 56-QFN (8x8)

Getting Started

To begin development, evaluate the LAN9221 using the EVB-LAN9221 evaluation board. Software implementation is streamlined via Microchip's standard driver support for common RTOS and Linux environments, and the optional EEPROM interface allows for simplified MAC address storage.

Also Consider

KSZ8851SNL MCHPMicrochip Technology - Consider this if a serial SPI interface is preferred over a parallel host interface to save microcontroller pins.
W5500 WIZnet - A popular alternative with a hardwired TCP/IP stack that offloads the entire network protocol from the host MCU.