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Honored Contributor
Honored ContributorThe pin VCCPGM power supply at AS mode
Hi all,
The pin VCCPGM power supply must be 3.0v/3.3v at AS mode in the cyclone v datasheet. why? I select a 1.8v low voltage flash from cypress. Can I connet VCCPGM pin to 1.8v? Thanks Jimmy4 Replies
Altera_Forumas mode is for epcq or epcs shipped by altera. no cypress device. you may miss understand ps or fpp configuration, 2.5 and 1.8v are also available for these configuration mode.
- Altera_Forum--- Quote Start --- as mode is for epcq or epcs shipped by altera. no cypress device. you may miss understand ps or fpp configuration, 2.5 and 1.8v are also available for these configuration mode. --- Quote End --- I replace the epcs with a cypress small outline 3.3v spi flash successfully. In order to reduce power cosumption, I plan to use the 1.8v spi flash from cypress now. Can i do it?
- Altera_Forum
I think no. EPCQ-L device runs on 1.8V VCC, but CycloneV doesn't support EPCQ-L, only EPCQ device. If it runs 1.8V VCCPGM, CycloneV will support EPCQ-L devices. So I don't think 1.8V cypress flash work instead of EPCS.
- Altera_Forum--- Quote Start --- I think no. EPCQ-L device runs on 1.8V VCC, but CycloneV doesn't support EPCQ-L, only EPCQ device. If it runs 1.8V VCCPGM, CycloneV will support EPCQ-L devices. So I don't think 1.8V cypress flash work instead of EPCS. --- Quote End --- I use the 1.8v spi flash from cypress at as mode successfully, and it runs 1.8V VCCPGM. But I still worry about the reliability. How can i get the further help.
