CAS before RAS refresh

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CAS before RAS refresh Empty Re: CAS before RAS refresh

Post  lunamoonfang on Thu Dec 02, 2010 11:30 pm

For convenience, the counter was quickly incorporated into RAM chips themselves. If the /CAS line is driven low before /RAS (normally an illegal operation), then the DRAM ignores the address inputs and uses an internal counter to select the row to open. This is known as /CAS-before-/RAS (CBR) refresh.

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