Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
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Pull up on configuration pin of Cyclon II

Altera_Forum
Honored Contributor II
‎02-24-2011 09:12 PM
1,273 Views

I am planning to use 4.7K pull up for Config ,nstatus and conf_done pin insted of 10K as mention in datasheet ,Please advice what will be the problem in using strong pullup. The reson is part standardisation as 4.7K is used in multiple place

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Altera_Forum
Honored Contributor II
‎02-24-2011 10:10 PM
605 Views

 

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Please advice what will be the problem in using strong pullup. 

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Apparently you are assuming a problem, why? Altera is exactly specifying 10 k without additional comments. So nobody will know about a problem unless he tried different values. But I guess, noone will.
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Altera_Forum
Honored Contributor II
‎02-25-2011 09:29 AM
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You can safely use 4k7. In all cases the current will be less than 1 mA which is far below the (almost any) Iol specified in the datasheet.

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