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Altera_Forum
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16 years ago

2.5VCCIO and 1.8V logic

Hi, I am designing a board using the EP3C40F324C6N device. The A/D converter that I am using has an LVDS data bus and 1.8V control logic. If I have VCCIO connected to 2.5V (which is require...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Look at page 1-11 of volume 2 chapter 1 of the CyIII device handbook (http://www.altera.com/literature/hb/cyc3/cyc3_ciii52001.pdf) It looks like the 2.5 I/O bank will work of with 1.8V inputs. However, be aware that this I/O bank will output 2.5V, which may or may not play well with the external device (A/D?).