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I am currently updating an old design that uses a obsolete Micron M58WR064KT70ZB6E 64Mb NOR flash memory. Is there an active Cypress part that would be a suitable replacement for this obsolete part? Could be the Cypress S29VS064RABBHI000 part suitables for this replacement? What are the main differences (apart from the footprint) ?
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Parallel NOR
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Hello Francesco,
S29VS064RABBHI000 will not be drop -in replacement for M58WR064KT70ZB6E. M58WR064KT70ZB6E is VFBGA56 7.7 × 9 mm, 0.75 mm pitch whereas S29VS064RABBHI000 is 44-Ball Very Thin Fine-Pitch Ball Grid Array (FBGA) 7.5 x 5.0 mm Package.
Thank you
Regards,
Bushra
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Hello Francesco,
Thank you for contacting Cypress Community Forum. We are working on your inquiry and will get back to you as soon as we find the resolution.
Regards,
Bushra
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Hello Francesco,
S29VS064RABBHI000 will not be drop -in replacement for M58WR064KT70ZB6E. M58WR064KT70ZB6E is VFBGA56 7.7 × 9 mm, 0.75 mm pitch whereas S29VS064RABBHI000 is 44-Ball Very Thin Fine-Pitch Ball Grid Array (FBGA) 7.5 x 5.0 mm Package.
Thank you
Regards,
Bushra
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Thanks for your responce.
I'm aware of the footprint difference between the two chips, but as far as I know on the market there is not a possible pin-to-pin replacement (with enough EOL) for the M58WR064KT70ZB6E. In this sense I have already accounted for the PCB modification. But what I'm looking for is a NOR flash that allows to me to do the replacement without expensive modification on the firmware side. The main difference I have found between M58WR064KT70ZB6E and S29VS064RABBHI000 is the multiplexing of address and data of the S29VS064RABBHI000. I'm not sure I can resolve this difference with my microcontroller.
To solve the problem I have selected another flash family, S29GL064S, that preserve the pin interface structure and should be 1.8V tollerant even if I have to provide for the 3V supply. Does it sound correct for you?
Thanks, regards
Francesco