Initialising Cypress NOR FLASH S25FL128l series.

[Anonymous]

I try to read  some bytes in QPI mode and I read always the same byte 0xCC.

Operation is: first after power up, enter QPI Mode command, then PP (02h) page program in QPI mode and  Quad I/ORead in QPI mode.

Address length is 24 bytes, clock frequency 10MHz.

Any suggestion? Maybe must be some previous initialisation commands or configuration registers writing?

Javier

[Anonymous]

To add to the above request the ReadID command in QPI mode gets the correct answer. 0x01,0x60,0x18.

So clock, and physical I/O ports are OK.

I try Quad I/ORead (0xEB) and QuadOutputRead(0x6B) commands in QPI mode even in erased sectors with bad results.

Any suggestion?