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2020-2021 Microchip Technology Inc.

DS00003646B-page 5

LAN9255

2.0

INTRODUCTION

The LAN9255 is a System-In-Package (SIP) design that combines the Microchip LAN9253 2/3-port EtherCAT device

controller with dual integrated Ethernet PHYs and the Microchip SAM E53J ARM Cortex-M4F MCU into a single 128-

pin TQFP package.

The LAN9255 is available in commercial (0°C to +70°C), industrial (-40°C to +85°C), and extended industrial (-40°C to

+105°C) temperature ranges. A block diagram of the LAN9255 is provided in Figure 2-1.

Details on each integrated device (LAN9253 & SAM E53J) can be referenced via their respective data sheets, as out-

lined in Section 1.1, References. Any device specific details outside of those detailed in the respective data sheets are

provided in Section 3.0, LAN9255 Device Specifications. Pinout information for the LAN9255 is detailed in Section 4.0,

Pin Configuration.

FIGURE 2-1:

LAN9255 BLOCK DIAGRAM