RE: Can a 3.3v input handle 5v?
"Nappi Chris-RA5809" <[email protected]> Wed, 11 Mar 2009 14:44:50 -0700
| Newsgroups | gmane.comp.hardware.motorola.microcontrollers.coldfire |
|---|---|
| Message-ID | <E4E998EF6ECEE246927E8005B1F3960903B47DDA@az33exm23.fsl.freescale.net> |
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: [email protected] [mailto:[email protected]] 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=20 MCF5282 DMA Timer pin used as an input? Would there be clipping diodes? If so, then one would need some=20 protection resistors to limit current input? Thanks, Bob Furber --- [email protected] Send a post to the list. [email protected] Join the list. [email protected] Join the list in digest mode. [email protected] Leave the list. --- [email protected] Send a post to the list. [email protected] Join the list. [email protected] Join the list in digest mode. [email protected] Leave the list.