Working principle of HIGH SPEED SRAM memory for cache

1.overview of 1.HIGH SPEED SRAM memory.

In the field of semiconductor chips,HIGH SPEED SRAM(High Speed Static Random Access Memory)is the core component of constructing Cache.Its reading and writing speed far exceeds ordinary memory,which directly affects the operating efficiency of CPU and other processors.Because HIGH SPEED SRAM does not need refresh delay,the access time is usually only 2-10 nanoseconds,which is one order of magnitude faster than DRAM.
 

2.Working principle of 2.HIGH SPEED SRAM memory.

Unlike DRAM,which needs to be refreshed constantly,HIGH SPEED SRAM adopts bistable flip-flop structure.Each memory cell consists of six MOSFET transistors(common 6T structure),in which two CMOS inverters are cross-coupled to form a positive feedback loop.When"1"is stored,one inverter outputs a high level and the other outputs a low level;The opposite is true when storing"0".This bistable structure makes the data very stable and the reading and writing speed is very fast.As long as the power supply is not interrupted,the data will not be lost and there is no need for background refresh operation.
 

3.Read operation of 3.HIGH SPEED SRAM.

①Specify the cell address to be read through the address bus(at this time,the write enable pin/WE remains invalid).

②Activate the chip select signal/CS to tell the SRAM that it's your turn.

③Activate the output enable/OE,and notify SRAM to perform reading.

④The data of④HIGH SPEED SRAM is output from the Dout pin to the data bus,and the whole process takes only a few clock cycles.
 

4.Write operation of 4.HIGH SPEED SRAM.

①Determine the address(ensure that/OE is invalid to avoid conflict).

②Send the data to be written to the Dout pin.

③Activate/CS to select the chip.

④activate/WE write enable,and the data will be stored in the designated unit immediately.
 

Yingshang Microelectronics,as the first-class agent officially authorized by many SRAM brands such as EMI,VTI and NETSOL,has been focusing on the promotion and technical support of HIGH SPEED SRAM memory for a long time,providing high-performance and cost-effective SRAM solutions covering various application scenarios.We have a complete SRAM memory product line and professional team,which can help customers complete the whole process development from selection evaluation to mass production design.If you need anything,please feel free to call.

Keywords:HIGH SPEED SRAM