FPGA, SoC, And CPLD Boards And Kits
FPGA Evaluation and Development Kits
5930 Discussions

DE0-nano Power Supply

Altera_Forum
Honored Contributor II
‎07-30-2011 12:13 AM
1,157 Views

HI there i have a de0 nano wich have a cyclone IV inside and i have the following problem ..  

 

i need that the output voltaje for the GPIO woluld be 5V not 3.3V... By mistake a supply the board by introducing 5 V in the VCC3P3 pin in the GPIO header and it work! i have an output HI of 5V..but then i look at the schematic of the board and i realase that is really dangerous what i did..but the board work fine thougt... 

 

 

Can someone tell me if can i do this... supply the board from the VCC3p3 pin insted of supply from the others headers?? "the corrects ones"  

 

in the usermanual don't said nothing so i would like to know if someone do this... 

 

 

 

Thanks!
0 Kudos

Link Copied

1 Reply
Altera_Forum
Honored Contributor II
‎07-31-2011 02:18 PM
344 Views

I don't recommend to use 5V in IO voltage. Datasheet says max IO voltage is 3.9V. It can damage the Cyclone IV. 

 

3.3V IO voltage should be enought to 5V TTL input or use levelshifters like 74ALVC164245 from NXP.
0 Kudos
Copy link
Reply

Community support is provided during standard business hours (Monday to Friday 7AM - 5PM PST). Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.