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SRAM Forum Discussions

Anonymous
Not applicable
        The operating current ICC mentioned in the datasheet includes only the core power, it does not include the IO power. You can compute the IO power as shown below.   
   
Assuming capacitive load only, IO power can be estimated to be ((α)* f *N * CL* V * V)   
where   
α is called the activity factor ; if on an average half the IO's switch per clock cycle, then α is 0.5.   
f is the switching frequency or clock frequency   
N is the number of IO's   
CL is the capacitive load;   
V is the Voltage swing of the IO.   
   
For example: IO power for (CYD18S36V18) = (10MHz * 36 * 20pF * 3.3^2)/2 = 39.2mW.   
   
More information can be obtained from this Application Note:    http://www.cypress.com/?rID=12896
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Anonymous
Not applicable
        They have created web tools for power calculations of Async and Sync SRAMs.   
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MR_41
Employee
Employee
First like received
        Hello Abhu,   
   
Can you please provide the link to the web tool?   
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Anonymous
Not applicable
        Pavan seems to have already added files in zip format for Sync SRAMs as well at following link..   
   
    http://www.cypress.com/forums/...did=7466&enterthread=y
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