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Nor Flash

amku_4419401
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First question asked Welcome!
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Short one..

To read device id and manufacturer id from dual die S70GL02GT device, what would be the command sequence ?
We are using device in x16 mode.

a) Is it this ..
< 2 Byte writes at addresses.>
*(u16 *) 555 = 0xaaaa // unlock 1
*(u16 *) 2AA = 0x5555 // unlock 2
*(u16 *) 555 = 0x9090 // Command.

Read flash device at base address for first die

and set A26 high for second die and repeat a) ?

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BushraH_91
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Moderator First comment on blog 500 replies posted 250 replies posted
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BushraH_91_0-1634336969263.png

Second die is same as first die. The device ID for first die is the same as second die. Therefore A26 does not have any relevance reading Device ID. Refer to S70GL02GT datasheet Distinctive Characteristics and go bullet # 2.

Device Id in x16 mode is (ID-CFI): 

Cycle 1 = 227Eh

Cycle 2 = 2248h

Cycle 3 = 2201h 

URL for datasheet: https://www.cypress.com/file/310666/download

Thank you

Regards,

Bushra 

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