Can a 3.3v input handle 5v?

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Can a 3.3v input handle 5v?

Bob Furber
I am having difficulty finding out if a 3.3v input can handle 5v on a
MCF5282 DMA Timer pin used as an input?

Would there be clipping diodes? If so, then one would need some
protection resistors to limit current input?

Thanks,

Bob Furber


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RE: Can a 3.3v input handle 5v?

Nappi Chris-ra5809
The MCF528x is actually the *only* ColdFire microcontroller that has 5V
tolerant inputs.

See the 'Absolute Maximum Ratings' table in the electricals - symbol
VIN.  The footnote discusses limiting of current.

Regards,
Chris Nappi

-----Original Message-----
From: [hidden email] [mailto:[hidden email]]
On Behalf Of Bob Furber
Sent: Wednesday, March 11, 2009 4:26 PM
To: Nappi Chris-RA5809
Subject: [ColdFire] Can a 3.3v input handle 5v?

I am having difficulty finding out if a 3.3v input can handle 5v on a
MCF5282 DMA Timer pin used as an input?

Would there be clipping diodes? If so, then one would need some
protection resistors to limit current input?

Thanks,

Bob Furber


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