IS61DDSB21M18C sram equivalent, 18mb ddr-ii sio synchronous sram.
* 512Kx36 and 1Mx18 configuration available.
* On-chip delay-locked loop (DLL) for wide data valid
window.
* Seperate I/O read and write ports.
* Synchron.
where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system o.
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