Nand flash for Application Code Storage - Reliable or NOT

[ImAl_4681896]

Hi Cypress Technical Team,

Currently I have used a Micron NAND flash for application code storage. Now later on I read an article from Cypress web site AN99111 which says that NOR flash is preferred for code storage due to 100% known good bits.

Now my question is if I use Micron NAND flash MT29F4G08ABADAH4 by enabling its on-chip internal ECC (5-bit detection and 4-bit error correction), is it safe to use it for code storage? Or do I must use NOR flash for code storage to achieve 100% reliability?

Please note, as data retention in NAND flash is 10 years and in NOR flash 20 years. In my application 10 years duration is enough but however 100% reliability is mandatory.

Kindly guide me. Best Regards, Imran Ali

[Apurva_S · Accepted solution]

Hello Imran,

Thank you for contacting Cypress Community Forum.

As you may already be aware, Cypress had announced the closing of the Joint Venture Transaction with SK Hynix System IC (SkyHigh Memory), in April 2019.   Please contact SkyHigh Memory, as all NAND Datasheets, Applications Notes, Qualification Summaries, as well as the NAND Community Forum and other NAND related collateral have been removed from view on Cypress.com. The following are the main technical support contacts for SkyHigh Memory NAND products:

Ashish Patel, Marketing Director: Ashish.Patel@skyhighmemory.com

Mohammad Nada, Principle Applications Engineer: Mohammad.nada@skyhighmemory.com

Mohamed Sardi, Product Marketing Director: moh.sardi@skyhighmemory.com

References:

Cypress Press Release, April 2019:

https://www.cypress.com/news/cypress-announces-closing-joint-venture-transaction-sk-hynix-system-ic

Thank you

Regards,

Apurva