DS4520 Datasheet (Maxim Integrated Products)

DS4520, I/O Expander Plus Memory

The DS4520 is a 9-bit nonvolatile (NV) I/O expander with 64 bytes of NV user memory controlled by an I2Ccompatible serial interface.

The DS4520 offers users a digitally programmable alternative to hardware jumpers and mechanical switches that are being used to control digital logic nodes.

Furthermor

DS4520 Features

* Programmable Replacement for Mechanical Jumpers and Switches

* Nine NV Input/Output Pins

* 64-Byte NV User Memory (EEPROM)

* I2C-Compatible Serial Interface

* Up to 8 Devices Can be Multidropped on the Same I2C Bus

* Open-Drain Outputs with Configurable Pullups