Internal Oscillator specs in Cyclone V and other Intel FPGA devices

usually internal oscillator prone to more error compare to external one, But i dont have exact number as of now

Answer to your questions as below

I agree with you , i am not finding the internal oscillator specification either in the datasheet .Let me try to ask internal team and come back to you for the same

ii) I found constraints for max 10 devices , can you apply for the cyclone V and let me know how it go :)

https://www.intel.com/content/www/us/en/programmable/support/support-resources/knowledge-base/solutions/rd01222015_416.html

iii) Do we need to opt out Optimize Hold Timing for the part of the code clocked by the Internal Oscillator?

let see the internal oscillator tolerance and we can think about hold timing next.

iv) What is the reason for not to post specs of Internal Oscillator for now? Maybe to force users to use rarely to prevent possible problems?

iam not sure i know the answer for this question;

Thank you,

Regards,

Sree