Hello Saito San,
(1) Please tell me the definition of the registration data.
The first data ”01h” shows Cypress, I understand.
But I don’t understand why the second and the third are “60h-17h”’S25FL064L”, and “02h-16h”’S25FL064L”
A) The first byte is assigned by JEDEC.
The second and third are manufacturers choice. So internally our Flash Business team has decided 60h for FL-L and 02h for FL-P for second byte. Similarly for the third byte. There is no special/specific reason.
(2) Why is the third different? I understand that this represents memory’s density, so I expected these are same data.
A) For the latest devices we are using 17h for 64Mb density. For older devices we used 16h. Even for 64Mb FS-S device it is 17h.
so 17h is latest convention for 64Mb density.