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    PSRAM  is dynamic RAM with built-in refresh and address-control circuitry to make it behave similarly to static RAM (SRAM). It combines the high density of DRAM with the ease of use of true SRAM. PSRAM (made by Numonyx) is used in the Apple iPhone and other embedded systems such as XFlar Platform.
    Some DRAM components have a "self-refresh mode". While this involves much of the same logic that is needed for pseudo-static operation, this mode is often equivalent to a standby mode. It is provided primarily to allow a system to suspend operation of its DRAM controller to save power without losing data stored in DRAM, rather not to allow operation without a separate DRAM controller as is the case with PSRAM.
XTX Technology Limited is a Hi-Tech Semiconductor Company, with HQ in Shenzhen, China. The vision of  the company is to become an independent China top memory solution provider.XTX provides high reliability and cost competive product family of NAND MCP , NOR MCP , SD NAND , SPI NAND , SPI NOR Flash and eMMC to meet the requirements of a wide variety of embedded application , such as mobile phone, tablet , vehicle equipment , security & surveillance , POS terminals , home appliances , M2M devices datacard , Set-top-box , Educational , Toys and many other terminal products . Meanwhile , XTX also provide SIP assembly service to optimize customer BOM cost , production efficiency and increase software IP security as well.
Density Part Number Description Package Voltage Packing MPQ(Units) Quantity State Delivery date Download
64Mbit XT18Q64ASOIGU 1.8V Serial PSRAM SO8 150mil 1.62~1.98V Tube 1000 20000 MP 12W NULL