SRAM芯片

SRAM (Static random-access memory) is a type of random access semiconductor memory which is a volatile memory (meaning that its data is lost when power is turned off) and stores each bit of data generally in flip-flops. So the frequent refreshing activity is not required unlike in DRAM. As long as power is there, data will be retained without refresh. One SRAM memory cell contains 6 transistors (four transistors configured as two cross-coupled inverters and additional two transistors to control the access to the memory cell). A basic SRAM provides fast data access but holds less data per unit volume so are more expensive than DRAM. So It is commonly used in cache memory, video card memory etc.