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Altera_Forum's avatar
Altera_Forum
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17 years ago

Low Voltage Cyclone III Configuration

I'm doing a low voltage (1.8V) design and would like to find a configuration EEPROM to interface to my Cyclone III. Is such a part available?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

The only real problem is the VIH parameter on the flash part. For example, the EPCS64 datasheet claims a VIHmin of 0.6 * VCC. So if VCC for the flash is 3.3V, I should provide at least 1.98V on ASDO (which I obviously don't). You could power the flash down to 2.7V or 3.0V in which case VIHmin would be 1.62V and 1.8V respectively.

Jake