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QDRII SRAM from NEC QDR is an SRAM that is equipped with a data input pin and a data output pin separately, while a standard SRAM has a common pin for data input and output. QDR runs data input and output at double data rate (DDR), enabling ultra-high-speed operation through simultaneous data reading and writing. It gives the highest performance when reading and writing data alternately. |
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DDRII SRAM from NEC This is a DDR (Double Data Rate) type SRAM that enables data to be read or written twice every clock. This product realizes a much higher transfer rate than conventional synchronous SRAM products. Adoption of BGA package is contributing to the reduction of area which carries SRAM. |
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