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Interface 3v MSP430 to 5v Circuits!

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I know this was mentioned back in the day in the Parallex Sensor thread we had, but I'd figure this is a really useful document (That I just refound and was surprised by) that should be highlighted as this is one of the most common issues.

 

TI's guide to Interfacing the 3v MSP430 to 5v Circuits.

Document slaa148

http://focus.ti.com/lit/an/slaa148/slaa148.pdf

 

Covers both input and output, and dual direction communication of intervoltage circuits/ics.

 

A bit dated (Oct 2002) so it doesn't include things like (active or passive) i2c or spi voltage translators but covers most of the useful steps/ideas in a beginner accessible way.

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