In the selection of storage schemes for embedded systems,portable smart devices and Internet of Things hardware,PSRAM pseudo static memory has become the mainstream external storage device in the industry due to its performance advantages of giving consideration to performance,cost and adaptability.As a special memory chip that combines the advantages of dual technologies,the unique architecture design solves the shortcomings of traditional SRAM and DRAM,and adapts to various lightweight and cost-effective hardware development scenarios.
PSRAM is a pseudo-static random access memory,which is often defined as an innovative memory device with DRAM core and SRAM interface.The core characteristic of pseudo static memory"pseudo static"of PSRAM comes from the differential design of internal and external architecture:PSRAM chip adopts mature 1T1C(single transistor+single capacitor)DRAM memory structure,which has the core advantages of high storage density and low production cost of DRAM;At the same time,the chip has built-in self-refresh control circuit,so there is no need for external main control chip to interfere with data refresh timing.
From the application level,PSRAM pseudo static memory is fully adapted to the standard SRAM interface protocol,and the staff can quickly complete the data access operation only by inputting the corresponding address and reading and writing instructions,greatly simplifying the hardware circuit design and program development process.Compared with the shortcomings of traditional SRAM,such as complex structure,high cost and limited storage capacity,and the disadvantages of conventional DRAM that requires complex external control circuits,PSRAM pseudo static memory achieves a balance between performance and practicality,and is widely used in wearable devices,smart homes,industrial embedded terminals,audio and video data caching and other scenarios.
Relying on mature technology,the current mainstream PSRAM pseudo static memory models are rich in categories,covering different capacities and performance specifications,which can meet the needs of multi-scenario selection.Mainstream parallel PSRAM models include:
AP Memory PSRAM pseudo static memory APS256
AP Memory PSRAM pseudo static memory APS128
AP Memory PSRAM pseudo static memory APS64
AP Memory PSRAM pseudo static memory APS32
ISSI PSRAM pseudo static memory IS66WVE4M16ALL
ISSI PSRAM pseudo static memory IS66WVC4M16ALL
ISSI PSRAM pseudo static memory IS66WVD4M16ALL
ISSI PSRAM pseudo static memory IS66/67WVC2M16EALL
ISSI PSRAM pseudo static memory IS66/67WVC2M16ECLL
ISSI PSRAM pseudo static memory IS66/67WVE2M16EALL
ISSI PSRAM pseudo static memory IS66/67WV1M16EBLL
ISSI PSRAM pseudo static memory IS66/67WVC1M16EALL
ISSI PSRAM pseudo static memory IS66WVD1M16ALL
ISSI PSRAM pseudo static memory IS66/67WVE51216EALL/EBLL/ECLL
JSC PSRAM pseudo static memory EM7644SU16ASZP-70LF
JSC PSRAM pseudo static memory EM7324SP16BLP-7OLFx
JSC PSRAM pseudo static memory EM7324SP16BMP-7OLFx
JSC PSRAM pseudo static memory EM7324SP16BNP-70LFx
JSC PSRAM pseudo static memory EM7324SP16BPP-70LFx
JSC PSRAM pseudo static memory EM7324SP16BRP-70LFx
JSC PSRAM pseudo static memory EM7324SP16BSP-70LFx
EMI PSRAM pseudo static memory EMI164NA16LM-70I
EMI PSRAM pseudo static memory EMI164LA16LM-70I
EMI PSRAM pseudo static memory EMI132NA16LM-70I
EMI PSRAM pseudo static memory EMI132LA16LM-70I
EMI PSRAM pseudo static memory EMI116NA16LM-70I
Shenzhen Ramsun Microelectronics Co.,Ltd（Ramsun International） is a vendor of the seimicondutor componets and the memory IC’s solution with clear market advantage. We still focus on the promotion for some famous semicondutor brand ,and specially take the RAM(Random Access Memory) as our core products.
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