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Re: [ts-7000] Re: DIO are set to "output" on startup TS-7200, how to cha

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Subject: Re: [ts-7000] Re: DIO are set to "output" on startup TS-7200, how to change
From: Kevin Cozens <>
Date: Thu, 28 Feb 2008 13:57:34 -0500
evil666demonic wrote:
> Is it possible that they are coming up as inputs, and that the voltage
> we are seeing is really just from the internal pull-up resistors on
> the DIO? This would explain why you read ~3.3V on those pins at
> startup. Dangerous indeed if they attempt to source current,
> especially in my case.

It is possible. I have seen microcontrollers that come out of reset with the 
I/O pins set to input with weak pull-ups enabled.

-- 
Cheers!

Kevin.

http://www.ve3syb.ca/           |"What are we going to do today, Borg?"
Owner of Elecraft K2 #2172      |"Same thing we always do, Pinkutus:
                                 |  Try to assimilate the world!"
#include <disclaimer/favourite> |              -Pinkutus & the Borg


 
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