Forum Discussion
Altera_Forum
Honored Contributor
12 years agoEPCS16 equivalent that works at 2.5V?
As a follow up to this thread....
http://www.alteraforum.com/forum/showthread.php?t=34049 ...this board is having a re-spin and I'd _really_ like to use a cheap eprom that works at 2.5V, that has been proven. Does anyone have any recommendations? I've only started searching so will come back with anything I find. Thanks for any pointers, Nial18 Replies
- Altera_Forum
Honored Contributor
--- Quote Start --- Altera probably want to sell you their expensive chips, rather than you using off the shelf cheaper parts. --- Quote End --- I'm not sure, it was an Altera FAE who told me the EPCS parts were ST parts re-branded! This machine only has QII 11.0 installed. I've had a look in the bin directory, there's a pgm_parts.txt file with entries for the EPCS16 but the values associated with it don't look like part IDs etc. Nial. - Altera_Forum
Honored Contributor
Unfortunately, 'pgm_prts.txt' doesn't do what we want. This simply specifies a some basic parameters and licensing related to the parts your particular installations can work with.
Cheers, Alex PS. And yes, EPCS parts are simply re-badged serial FLASH parts. I think Altera has deals with ST and others... - Altera_Forum
Honored Contributor
--- Quote Start --- I'm not sure, it was an Altera FAE who told me the EPCS parts were ST parts re-branded! --- Quote End --- That's true, but the EPCS16 equivalent is M25P16, not M25PX16. The latter has beside 2.5V capability a different organization and other features. The annoying point is that Altera is promoting 2.5V I/O voltage since years but didn't yet manage to provide 2.5V compatible serial flash devices in the lower MBit ranges. - Altera_Forum
Honored Contributor
--- Quote Start --- That's true, but the EPCS16 equivalent is M25P16, not M25PX16. The latter has beside 2.5V capability a different organization and other features. The annoying point is that Altera is promoting 2.5V I/O voltage since years but didn't yet manage to provide 2.5V compatible serial flash devices in the lower MBit ranges. --- Quote End --- So as far as you are aware there currently isn't a 2.5V EPCS16 equivalent? I can stick with my separate voltage regulator (it's only ~$0.40) but it would have been nice to have just the config prom. ALTERA, get your collective fingers out and implement a work round. Thanks all for your input. Nial. - Altera_Forum
Honored Contributor
The obvious workaround would be to support M25PX16 by Quartus programmer.
- Altera_Forum
Honored Contributor
--- Quote Start --- The obvious workaround would be to support M25PX16 by Quartus programmer. --- Quote End --- Exactly! Is it worth a few of us raising simultaneous service requests? I'll do one now.... SR 11029669 Can anyone else interested please also submit a request so they get the message? Nial. - Altera_Forum
Honored Contributor
--- Quote Start --- Exactly! Is it worth a few of us raising simultaneous service requests? I'll do one now.... SR 11029669 Can anyone else interested please also submit a request so they get the message? Nial. --- Quote End --- I'm afraid the output of this SR is that they've confirmed they will not support the M25PX16 . So it doesn't look like there is a 2.5V EPCS16 equivalent that we can use. I wonder what Xilinx have? Nial - Altera_Forum
Honored Contributor
Did anyone confirmed that M25PX16 can work with this and how ?