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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.

Jeju Semiconductor is one of the world largest SRAM solutions provider for mobile applications

Since Jeju Semiconductor made a debut to the SRAM (Static Random Access Memory) market in 2001 with 4M SRAM, Jeju Semiconductor continued implementing full lineup of low power SRAM products through 1M, 2M, 4M to 8M SRAM.

Density	Part number	Voltage	Max Speed	DPD mode	Pacakge Type	Product Description	Download
64Mbit	EM7644SU16ASZP-70LF	3.0V	70ns	--	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mbit	EMC326SP16BKY-70LFx	1.8V	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mbit	EM7324SP16BMP-70LFx	1.8V	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mbit	EM7324SP16BMP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mbit	EM7324SP16BMP-70LFx	1.8V	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mbit	EM7324SP16BMP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mbit	JS7324SV16BLY-70LFI	3.0V	70ns	X	--	De-Mux Async. pSRAM	NULL
32Mb	EM784SP16BPP-70LF	1.8V	133MHz	--	PKG	DE-Mux Async. pSRAM	NULL
32Mb	JS7324SU16BN	3.0V	70ns	O	KGD	De-Mux Async. pSRAM	NULL
32Mb	JS7324SU16BNP-70LF	3.0V	70ns	--	PKG	De-Mux Async. pSRAM	NULL
32Mb	JS7324SU16BSP-70LFI	1.8V	133MHz	--	PKG	De-Mux Async. pSRAM	NULL
32Mb	JS7324SV16BMI	3.0V	70ns	O	KGD	De-Mux Async. pSRAM	NULL
32Mb	EM7324SP16BLP-70LFx	1.8v	70ns	o	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mb	EM7324SP16BNP-70LFx	1.8v	70ns	o	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mb	EM7324SP16BPP-70LFx	1.8v	70ns	x	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mb	EM7324SP16BRP-70LFx	1.8v	70ns	o	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
32Mb	EM7324SP16BSP-70LFx	1.8v	70ns	x	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
16Mb	EM7164SP16BMP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
16Mbit	EM7164SP16BLP-70LFx	1.8v	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
16Mbit	JS7164SV16BLY-70LFI	3.0V	70ns	X	--	De-Mux Async. pSRAM	NULL
16Mbit	JS7164SV16BLY-70LFI	3.0V	70ns	X	--	De-Mux Async. pSRAM	NULL
16Mb	EM7164SP16BNP-70LFx	1.8V	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
16Mb	EM7164SP16BPP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
16Mb	EM7164SP16BRP-70LFx	1.8V	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
16Mb	EM7164SP16BSP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
16Mb	EM784SU16ANP-70LF	3.0V	70ns	--	PKG	De-Mux Async. pSRAM	NULL
16Mb	EM784SU16ASP-70LF	3.0V	70ns	--	PKG	De-Mux Async. pSRAM	NULL
16Mb	JS7164SU16BSP-70LFI	3.0V	70ns	--	PKG	De-Mux Async. pSRAM	NULL
8Mbit	EM784SP16BLP-70LFx	1.8V	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mbit	EM784SP16BLP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mbit	EM784SP16BLP-70LFx	1.8V	70ns	O	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mbit	EM784SP16BLP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mbit	EM784SP16BLP-70LFx	1.8V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mbit	JS784SV16BLY-70LFI	3.0V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mbit	JS784SV16BLY-70LFI	3.0V	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mb	EM784SP16BMP-70LFx	1.8v	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mb	EM784SP16BNP-70LFx	1.8v	70ns	o	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mb	EM784SP16BPP-70LFx	1.8v	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mb	EM784SP16BRP-70LFx	1.8v	70ns	o	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mb	EM784SP16BSP-70LFx	1.8v	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL
8Mb	JS784SU16BSP-70LFI	1.8v	70ns	X	48B FBGA 6x7mm	De-Mux Async. pSRAM	NULL

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