4M x 1-bit dynamic ram Low Power 4M x 1-bit dynamic ram 4M X 1 FAST PAGE Dram, 50 ns, PDSO20 4M x 1-bit dynamic ram Low Power 4M x 1-bit dynamic ram 4米1位动态随机存储器的低功米1位动态随机存储器 4M X 1 FAST PAGE Dram, 70 ns, PDSO20 0.300 INCH, PLASTIC, SOJ-26/20 4M x 1-bit dynamic ram(Fast Page Mode)(4M x 1动ram(快速页面模)