Compared with parallel SRAM,serial scheme takes up less I/O ports and has simple wiring,which is especially suitable for embedded systems with tight MCU resources.The VTI Serial RAM VTI7064MSM represented by Yingshang is a 64Mbit serial SRAM chip with 8M×8 organization mode,which can be flexibly configured as single-channel input and output(standard SPI)or four-channel parallel transmission(QPI mode).When the serial sram memory is switched to QPI mode,4-bit I/O sends and receives data at the same time,which effectively improves the throughput and meets the cache requirements.The highest clock frequency of serial SRAM chip reaches 104MHz,and there is no waiting delay in continuous reading and writing cycles,which perfectly inherits the hardware advantages of SRAM"unlimited reading and writing times,no need to refresh".The package is a compact 8-SOIC,which occupies a small board area and is convenient for manual welding and automatic patch.

 

 

 

Serial sram memory VTI7064MSM adopts advanced CMOS technology,which can still maintain low power consumption at high speed.The serial sram chip has built-in self-refresh logic,so users don't need to care about the bottom timing,but only need to access through standard CSN chip selection,clock and bidirectional data line.The analysis,data latch and data transmission of each instruction are automatically processed by hardware.The serial SRAM conforms to RoHS environmental protection standards,and can work stably in the industrial temperature range from-40℃to+85℃after high and low temperature cycling,electrostatic protection and other reliability tests.For applications that need frequent logging,data buffering or LCD memory expansion,this chip provides a"plug and play"experience.

 

If your main control chip supports SPI interface,only four wires(CSN,SCLK,SI,SO)are needed to connect a 64-bit serial SRAM.In QPI mode,the bandwidth can be increased by four times by adding three more data lines.Almost all single-chip computers with SPI peripherals can be directly driven without modifying the underlying hardware.The original factory of VTI supplies serial sram series products for a long time,and the complete technical manual can be obtained through the authorized agency channel of Yingshang.Whether replacing the original parallel SRAM or adding external RAM for new projects,VTI7064MSM is a serial SRAM model worthy of attention.If you are interested,please feel free to come to us for consultation.