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PBetk
Beginner
223 Views

Can a Max 10 output tolerate be connected to 5V through a 10K resistor during power off, programming and configuration?

 
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2 Replies
YuanLi_S_Intel
Employee
55 Views

Hi Pete,

 

Sorry it cannot be. The reason is because the absolute maximum rating for IO is 3.9V. Anything beyond that will cause damage to the I/O buffer.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/max-10/m10_datasheet.pdf (Page 4)

 

Thank You

ak6dn
Valued Contributor II
55 Views

With 10K pullup to +5V, add a 33K pulldown to 0V. This will cap the node to ~3.8V when not driven by the FPGA output.

The additional 33K load to ground can easily be overdriven by an output (ie, 120uA).

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