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UMall1's avatar
UMall1
Icon for Occasional Contributor rankOccasional Contributor
2 years ago
Solved

VCCIO

I am reading the Cyclone 10 GX datasheet and it seems the device is not capable of interacting with other devices that operate with 3.3V logic. It uses 3V logic. I then come across the following Q&A...
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  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    2 years ago

    In most cases, 3.3V I/O should be compatible with 3V I/O but it should not necessarily work all the system. I think it is safe to check the 3.3V device datasheet first before interacting with the Cyclone 10 GX. It should support as the DC input voltage maximum is 3.3V. In other words, it will support as long as the Vih, Voh, Vil, and Vol of both I/O standards are within the range of Cyclone 10 GX.





AqidAyman_Altera's avatar
AqidAyman_Altera
Icon for Regular Contributor rankRegular Contributor
2 years ago

In most cases, 3.3V I/O should be compatible with 3V I/O but it should not necessarily work all the system. I think it is safe to check the 3.3V device datasheet first before interacting with the Cyclone 10 GX. It should support as the DC input voltage maximum is 3.3V. In other words, it will support as long as the Vih, Voh, Vil, and Vol of both I/O standards are within the range of Cyclone 10 GX.