what's reason for UC3B datasheet Rev.G change from Rev.F?

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darthvader
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Posted by darthvader: Thu. Apr 17, 2008 - 09:53 PM
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Hi,

just saw this on the new datasheet:

Quote:

Open Drain Mode removed from ”General-Purpose Input/Output Controller (GPIO)” on page
153.

But why?

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AVR Microcontrollers, AVR UC3
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sma
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Posted by sma: Fri. Apr 18, 2008 - 09:38 AM
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The open drain control in GPIO for UC3B does not exist.

-sma

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darthvader
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Posted by darthvader: Fri. Apr 18, 2008 - 02:32 PM
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really??!!

Then this means that the TWI interface on UC3B doesn't needs the open drain mode to operate??

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sma
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Posted by sma: Sat. Apr 19, 2008 - 10:12 AM
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The TWI module controls the open drain on the I2C IO, not the GPIO controller on this 2 IOs, so basically you do not have to take care of GPIO init when using TWI.

-sma

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darthvader
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Posted by darthvader: Mon. Apr 21, 2008 - 07:34 AM
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ok, great news!!!

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