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)