In the design of single chip microcomputer and embedded system,expanding data memory has become a key scheme to optimize system performance and economy.Among them,Static Data Memory(SRAM)has become the first choice for many high-reliability applications because of its advantages of no loss of data information,no need to refresh and fast access speed.
Data memory is the most widely used external expansion chip in single chip microcomputer system,and static data memory SRAM memory is usually a latch,so as long as the power is not turned off,the information will not be lost.With rich functions,strong performance and strong expansibility,the products are widely used in video encoders,industrial data acquisition cards,various printers,scanners,digital cameras,industrial cameras,medical imaging equipment,testing and measuring instruments and many other products.
EMI508NL16LM-55I,a domestic SRAM expansion chip represented by Yingshang,is a 16-bit wide static memory chip with a capacity of 512K(512*16,that is,8Mbit bytes)produced by Weiling Chuangxin Company.EMI508NL16LM-55I,a domestic SRAM expansion chip,adopts standard SPI interface communication,which can completely rival similar SRAM in terms of large capacity,performance,high reliability and quality,and has the advantages of low energy consumption and low cost.It can be completely compatible with the hardware equipment of similar SRAM products on the market,and at the same time meet the requirements of different application systems for performance and high cost performance.
Domestic series of external expansion chip SRAM chip has the following characteristics:
①High speed,with access speed of 55ns,which can meet the needs of real-time data processing and cache.
(2)Low energy consumption,no need for clock and refresh circuit under full static operation.
(3)③TTL level compatibility,three-state output structure makes it easy to access a variety of single chip microcomputer and processor operating systems.
Keywords:
SRAM
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