Clock on CFI Flash Memory

Memory devices like S26AL032D have no clock pin.

They need no clock information as they are asyncronus devices.

so there is no need to assing any clock as you won't find a clock pin at such devices to connect to

so you can't change the frequency of these components.

all you can do is to change the device speed by buying faster devices.

the only thing you must obey is the timing relationship these devices have between several signals and these information are available from thier datesheet.

thats the reason why inside sopc builder you just assign

- setup

- access

- hold

timinig values

as a fpga is normaly a fully syncronus design and based upon a clock, the sopc builder calculated the counter values needed to meet these timings.