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Honored Contributor
Honored Contributor2.5V AS serial configuration device?
I'm finising off a spin of a board and trying to move from VCCIO of 3.3V to 2.5V. We're pin constrained so I'm moving the banks with the configuration pins too. I'm using active serial config a...
Altera_ForumHonored Contributor
Honored ContributorThanks for the suggestions guys.
--- Quote Start --- how about this one: AT45DB161D-SU-2.5 --- Quote End --- That doesn't have the legacy 'read device ID' command that should return 0x14 for an EPCS16 equivalent. Having said that I'm not sure if that's a problem with indirect programming and a *.jic that we're using. Anybody know if this is required? --- Quote Start --- Why using a a 2.5V device at all ? If you still have a 3.3V rail on your board you can power the ECPS16 with 3.3V --- Quote End --- Most of the data sheets I have checked state VInHigh is Vcc * 0.7 so the guaranteed 2.5V output of 2.0V isn't high enough. The simplest/ cheapest solution looks like it's going to be to use a small dedicated voltage regulator to power the config device at ~2.8V. Thanks again, Nial.
