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Binoyjohnson
New Contributor
2 years agoCyclone V GPI Maximum Input limit - 5CSEBA4U23I7N
Hi We are using the GPI pins in the Cyclone V processor. Our DDR voltage is 1.35V. What is the maximum input voltage these pins can tolerate? pins are listed below. In our design we have connected...
- 2 years ago
Hi Binoy
From the De1-SOC-Schematics you can see, that all banks have vcio=3.3V
vcio=3.3v (except the HPS-banks which use 1.5V
1.5v). Pins on these banks will correctly detect 2.5V CMOS input , but they will not be able to generate 2.5V output.

Thank you,
Aliff
mabdrahi
Contributor
2 years agoHi Binoy,
The maximum voltage also will follow the VDD as well
For full document you can refer to https://cdrdv2-public.intel.com/654351/pcg-01014.pdf page, 25-30
Let me know if i answer your question
Thank you,
Aliff
- Binoyjohnson2 years ago
New Contributor
Thanks for the clarification