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Altera_Forum
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8 years ago

EPCS Discontinuation, looking for replacement.

Hi, I have been using EPCS flash device in my design, since Altera is discontinuing it, I was looking for replacements, I found EPCQ devices to be a good match but they are not in stock on any...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

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I recently compiled a list of EPCS16 compatible serial flash ICs (pin compatible, SO8 package, same legacy ID) available at Digikey:

Fremont FT25H16S-RT

ISSI IS25LP016D-JNLE

Adesto AT25SF161-SSHD-T

There should be similar 4Mbit chips.

I see that FT25H04S-RT apparently lacks the legacy ID (retrieved by command 0xab), so you would need to disable the ID check in Quartus programming file conversion.

ISSI IS25LQ040B-JNLE respectively IS25LQ010B-JNLE have the legacy ID and should work as full EPCS4 and EPCS1 replacement.

I used Micron (formerly ST) M25Pxx flash up to now, but they are discontinued, too. Didn't yet check the new devices myself.

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I can confirm ISSI IS25LQ040B-JNLE

works perfectly as replacement for M25P04

I can program it with version quartus 12.1 SP1 and 17.1 prime without any problem. No 'disable EPCS ID check' or anything else need to be configured.

It is recongized as a standard EPCQ4 flash. device ID=0x12

It's a much cheaper solution.