Forum Discussion
New ContributorCyclone V Clamping Diode Electrical Specification
Hi,
Please provide the below information for the Cyclone V Device IO Banks signals.
- what is the clamping voltage for the internal diode when enabled.
- what is the normal protection voltage for IO pin when clamping diode is not enabled.
- What is the diode used for an Clamping diode, is it an Zenor Diode or TVS Diode or Schottky Diode
6 Replies
Farabi_AlteraRegular Contributor
FvMSuper Contributor
Hi,
did you see IO element schematic in device handbook? It shows clamping diode as silicon diode against VCCIO.
Most detailed specification of IO voltage characteristic can be found in IBIS files.
Not sure what you mean with "normal protection voltage". Did you review maximum ratings in datasheet?
arulmanivWe are currently reviewing the protection mechanisms for the Cyclone V device and would appreciate your assistance in clarifying the following details regarding the internal clamping diode configuration:
- Clamping Voltage (when enabled):
Could you please confirm the clamping voltage level for the internal diode when it is enabled on the IO pins? - IO Pin Protection Voltage (when clamping diode is disabled):
What is the typical protection voltage range for the IO pins when the internal clamping diode is not enabled?
This information is critical for ensuring compliance with our system-level ESD and surge protection requirements. We would appreciate any documentation or references you could share to support these specifications.
Thank you in advance for your support.
AqidAyman_AlteraDear Customer,
If there are no further inquiries, I will step back and allow the community to assist with any future follow-up questions.
Thank you for engaging with us!
Best regards,
Altera Technical Support
- Clamping Voltage (when enabled):
