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NEC公司日前宜布,该公司在世界上首次开发出1G位的动态随机存储芯片。这种芯片在储的信息相当于4000页报纸。 NEC公司是于2月15日在美国召开的由半导体开发国际学会举办的国际半导体电路会议上宜布此项开发成果的。 NEC开发的1G DRAM可在一个芯片上存储二十二亿个晶体管和电容。一个芯片的大小为2.5cm×3.6cm(9平方厘米),相当于256M的2.5～2.8倍。芯片仍部分延用以前的分格配置晶体管和电容的方法,面积比过去缩小了30％,电路间距为0.25微米。 1G DRAM的一个芯片里能够存储六千四百万汉字或十五分钟的画面信息。为了存储画面信息,在个人用的便携式终端等多媒体相关设备中存储256M或1G等大容量DRAM是不可缺少的。
NEC recently Yibu, the company in the world for the first time to develop 1G bit dynamic random access memory chips. This chip is stored information equivalent to 4,000 pages of newspapers. NEC Corporation is the result of this development at the International Semiconductor Circuits Conference organized by the International Institute for Semiconductor Development on February 15th in the United States. The 1G DRAM developed by NEC can store 2.2 billion transistors and capacitors on a single chip. The size of a chip is 2.5 cm × 3.6 cm (9 cm 2), which is equivalent to 2.5 to 2.8 times 256M. The chip still partially extends the previous method of dividing the transistors and capacitors into smaller cells, reducing the area by 30% and the circuit pitch to 0.25 microns. A chip in 1G DRAM can store 64 million characters or fifteen minutes of screen information. In order to store screen information, it is indispensable to store large-capacity DRAMs such as 256M or 1G in multimedia-related devices such as portable terminals for personal use.