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Altera_Forum
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14 years ago

Output voltage doesn't match settings

Hello! I'm using altera cyclone II DE1 EP2C20F484C7. I've set default I/O to 1.8V, set ALL I/O bank's Vccio to 1.8V. Also I'm using expansion slot. Then I have measured voltage on expansion he...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I work on student project - UICC terminal on DE1. Simple sim cards have several operation mode - class c (1.8v) and class b (3.3), but specification says that 3.3V is maximum, so I think I must lower voltage to, say, 3.2V for better compatibility with 3.3V sim cards. It would be easier, than implement level translator for class c operation mode.

And thank you, again. Great community I've found here.