how to reset a SRAM?

[zhangljz]

Hello everyone,

I am designing a digital circuit which will include some SRAMs. But I can't find the 'reset' signal in the SRAM IP, then how do I reset the whole SRAM in one clock cycle?

Or do I need to reset it before using ?

Any suggestion is apprecitated


Thank you

 

[KlausST]

Hi,

what device is accesing the SRAM? Is it external?

Internal devices should know what data (addresses) are written. Each cell should be written first, then read.

Often it is not needed to reset SRAM data. Look at documentation, if there is known value after power up (0x00 or 0xFF), or you can use dedicated reset functions. .
In case the content is random but you really need to reset, then you need to write it address by address...

Klaus

 

[jbeniston]

SRAMs don't have a way to reset them in a single clock cycle. You need to write a 0 to each address.

 

[zhangljz]

Hi guys,

Thank you. You exactly answered my question.

OK, I will ask the SRAM provider if there is a constant state after power up. If there is no known state, I will reset them by address.

 

[artmalik]

the SRAMs don't have a reset signal...if you are looking for constant state of the memory bitcells... it is not going to happen. You will have to do it by writing into each of the addresses.