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K4E640812B / Samsung Electronics,Datasheet,06/07+,8M x 8bit CMOS Dynam 订购 PDF文档

K4E640812B-JC-5 / Samsung Electronics,Datasheet,06/07+,8M x 8bit CMOS dynam 订购 PDF文档

K4E640812B-JCL-45 / Samsung Electronics,Datasheet,07+,8M x 8bit CMOS dynam 订购 PDF文档