Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
20678 Discussions

switching VCCIO Max5 during operation CPLD

Altera_Forum
Honored Contributor II
‎04-27-2018 03:44 PM
1,154 Views

Hi, 

can I switch the voltage one(one of four) bank(for example, from 3.3V to 2.5V or 1.8V) during the operation of the device when the device is energized(supply voltage on vccint and voltage to all vccio bank except one is applied)?
0 Kudos

Link Copied

1 Reply
Altera_Forum
Honored Contributor II
‎05-03-2018 03:42 AM
284 Views

Hi, 

 

we have not tested or support this method. You can refer the power up sequence requirement from user guide. 

You can try with own risk. 

 

Why can't you switch off and change the vccio. 

If you change the vccio when the device is energized, which will pause/stop the operation for a few micro second. 

 

Best Regards, 

Anand Raj Shankar 

(This message was posted on behalf of Intel Corporation)
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.