Features of TCAL Agile I/O Expanders

Abstract

This document demonstrates the capabilities of TCAL Agile I/O expanders and explains the benefits of using the TCAL version over the former TCA variant.

Trademarks

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1 Introduction

The TCAL family of I2C I/O expanders offers new and improved functionality on the p-port pins. The Agile I/O’s can be adjusted for drive strength, power consumption, EMI, and software related flags. Here are the six features an Agile I/O can offer on a TCAL I/O expander.

Programmable output drive strength
Programmable pull-up and pull-down resistors
Latchable inputs
Maskable interrupts
Interrupt status register
Programmable open drain or push-pull outputs

For the examples provided in this application note, the TCAL6416 is the device in use.