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Electronics Buyers' Guide

Electronics Manufacturing & Production Handbook 2019


 

GPIO expanders
27 June 2012, Analogue, Mixed Signal, LSI

Exar unveiled the XRA120x I²C/SMBus and XRA140x SPI GPIO expander product families – a total of 12 device offerings. The devices can operate from 1,65 V to 3,6 V with 5 V tolerant inputs. Depending on the part number, there are eight or 16 GPIOs. When configured as an input, each GPIO has an internal pull-up resistor that can be enabled or disabled. The polarity of the input can also be inverted and there are filters on each input so that noise or glitches on the inputs will be ignored; the input filter feature can also be disabled. The interrupt for the GPIO can be configured to generate an interrupt on the rising edge, falling edge or both edges. When configured as an output, the GPIO output levels can individually be controlled or tri-stated.


Credit(s)
Supplied By: KH Distributors
Tel: +27 11 854 5011
Fax: 086 694 8250
Email: sales@khd.co.za
www: www.khd.co.za
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