30 DRAM 854

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Part	Manufacturer	Memory IC Type	Temperature Grade	No. of Terminals	Package Code	Refresh Cycles	Package Shape	Package Body Material	Surface Mount	Technology	Terminal Form	Maximum Supply Current	No. of Words	Input/Output Type	Nominal Supply Voltage / Vsup (V)	Power Supplies (V)	Memory Width	Package Style (Meter)	Package Equivalence Code	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Output Characteristics	Organization	No. of Words Code	Terminal Finish	Terminal Position	JESD-30 Code	Maximum Seated Height	Qualification	Memory Density	JESD-609 Code	Maximum Standby Current	Maximum Access Time
MC-424000A8BA-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	800 mA	4194304 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	4MX8	4M		SINGLE	R-PSMA-N30	20.2946 mm	Not Qualified	33554432 bit		.008 Amp	70 ns
MC-424100A8B-80	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	720 mA	4194304 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	4MX8	4M		SINGLE	R-PSMA-N30	24.0284 mm	Not Qualified	33554432 bit		.008 Amp	100 ns
MC-424100A9A-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		900 mA	4194304 words	COMMON	5	5	9		SIP30	DRAMs		70 Cel	3-STATE	4MX9	4M	Tin/Lead (Sn/Pb)	SINGLE		26.289 mm	Not Qualified	37748736 bit	e0	.009 Amp	70 ns
MC-424100A8AA-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		800 mA	4194304 words	COMMON	5	5	8		SIP30	DRAMs		70 Cel	3-STATE	4MX8	4M	Tin/Lead (Sn/Pb)	SINGLE		20.2946 mm	Not Qualified	33554432 bit	e0	.008 Amp	70 ns
MC-421000A8F-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	720 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	19.9898 mm	Not Qualified	8388608 bit		.008 Amp	60 ns
MC-421000A9A-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		512		PLASTIC/EPOXY	NO	CMOS		720 mA	1048576 words	COMMON	5	5	9		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M	Tin/Lead (Sn/Pb)	SINGLE		21.6154 mm	Not Qualified	9437184 bit	e0	.003 Amp	70 ns
MC-42256AB8FA-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	256	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	120 mA	262144 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	256KX8	256K		SINGLE	R-PSMA-N30	16.7894 mm	Not Qualified	2097152 bit		.002 Amp	100 ns
MC-424100A9A-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		720 mA	4194304 words	COMMON	5	5	9		SIP30	DRAMs		70 Cel	3-STATE	4MX9	4M	Tin/Lead (Sn/Pb)	SINGLE		26.289 mm	Not Qualified	37748736 bit	e0	.009 Amp	60 ns
MC-421000A9AA-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		330 mA	1048576 words	COMMON	5	5	9		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M	Tin/Lead (Sn/Pb)	SINGLE		18.2626 mm	Not Qualified	9437184 bit	e0	.003 Amp	60 ns
MC-421000A9F-80	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	630 mA	1048576 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M		SINGLE	R-PSMA-N30	19.9898 mm	Not Qualified	9437184 bit		.003 Amp	80 ns
MC-424000A9BA-80	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	810 mA	4194304 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	4MX9	4M		SINGLE	R-PSMA-N30	20.2946 mm	Not Qualified	37748736 bit		.009 Amp	80 ns
MC-421000A9FB-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	280 mA	1048576 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M		SINGLE	R-PSMA-N30	16.6624 mm	Not Qualified	9437184 bit		.003 Amp	70 ns
MC-41256A8B-15	Renesas Electronics	PAGE MODE DRAM	COMMERCIAL	30	SIMM	256	RECTANGULAR	PLASTIC/EPOXY	NO	MOS	NO LEAD		262144 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	256KX8	256K		SINGLE	R-PSMA-N30	16.7894 mm	Not Qualified	2097152 bit			150 ns
MC-42256AB9FA-80	Renesas Electronics	PAGE MODE DRAM	COMMERCIAL	30	SIMM	256	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	210 mA	262144 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	256KX9	256K		SINGLE	R-PSMA-N30	16.7894 mm	Not Qualified	2359296 bit		.003 Amp	80 ns
MC-421000A9A-12	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		512		PLASTIC/EPOXY	NO	CMOS		450 mA	1048576 words	COMMON	5	5	9		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M	Tin/Lead (Sn/Pb)	SINGLE		24.0284 mm	Not Qualified	9437184 bit	e0	.009 Amp	120 ns
MC-421000B9A-12	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	30		512		PLASTIC/EPOXY	NO	CMOS		450 mA	1048576 words	COMMON	5	5	9		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M	Tin/Lead (Sn/Pb)	SINGLE			Not Qualified	9437184 bit	e0	.009 Amp	120 ns
MC-421000A8FB-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	240 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.6624 mm	Not Qualified	8388608 bit		.002 Amp	60 ns
MC-42256AB8BA-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	256	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	160 mA	262144 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	256KX8	256K		SINGLE	R-PSMA-N30	16.7894 mm	Not Qualified	2097152 bit		.002 Amp	70 ns
MC-424100A9B-80	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	810 mA	4194304 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	4MX9	4M		SINGLE	R-PSMA-N30	24.0284 mm	Not Qualified	37748736 bit		.009 Amp	80 ns
MC-421000A8BA-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	160 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.51 mm	Not Qualified	8388608 bit		.002 Amp	100 ns
MC-421000A8BB-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	200 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.6624 mm	Not Qualified	8388608 bit		.002 Amp	70 ns
MC-421000A8AA-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		160 mA	1048576 words	COMMON	5	5	8		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M	Tin/Lead (Sn/Pb)	SINGLE		17.78 mm	Not Qualified	8388608 bit	e0	.002 Amp	100 ns
MC-41256A9B-12	Renesas Electronics	PAGE MODE DRAM	COMMERCIAL	30	SIMM	256	RECTANGULAR	PLASTIC/EPOXY	NO	MOS	NO LEAD		262144 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	256KX9	256K		SINGLE	R-PSMA-N30	16.7894 mm	Not Qualified	2359296 bit			120 ns
MC-421000B9B-80	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	630 mA	1048576 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M		SINGLE	R-PSMA-N30		Not Qualified	9437184 bit		.009 Amp	80 ns
MC-421000A9AB-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		220 mA	1048576 words	COMMON	5	5	9		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M	Tin/Lead (Sn/Pb)	SINGLE		18.2626 mm	Not Qualified	9437184 bit	e0	.003 Amp	100 ns
MC-421000A8A-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		512		PLASTIC/EPOXY	NO	CMOS		480 mA	1048576 words	COMMON	5	5	8		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M	Tin/Lead (Sn/Pb)	SINGLE		21.6154 mm	Not Qualified	8388608 bit	e0	.008 Amp	100 ns
MC-424000A9AA-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		1080 mA	4194304 words	COMMON	5	5	9		SIP30	DRAMs		70 Cel	3-STATE	4MX9	4M	Tin/Lead (Sn/Pb)	SINGLE		26.289 mm	Not Qualified	37748736 bit	e0	.009 Amp	60 ns
MC-421000A8FB-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	200 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.6624 mm	Not Qualified	8388608 bit		.002 Amp	70 ns
MC-421000A8FA-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	200 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.6624 mm	Not Qualified	8388608 bit		.002 Amp	70 ns
MC-424100A8AA-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		640 mA	4194304 words	COMMON	5	5	8		SIP30	DRAMs		70 Cel	3-STATE	4MX8	4M	Tin/Lead (Sn/Pb)	SINGLE		20.2946 mm	Not Qualified	33554432 bit	e0	.008 Amp	100 ns
MC-421000A8FA-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	160 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.51 mm	Not Qualified	8388608 bit		.002 Amp	100 ns
MC-421000A9B-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	720 mA	1048576 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M		SINGLE	R-PSMA-N30	19.9898 mm	Not Qualified	9437184 bit		.003 Amp	70 ns
MC-421000B9B-12	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	450 mA	1048576 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M		SINGLE	R-PSMA-N30		Not Qualified	9437184 bit		.009 Amp	120 ns
MC-424100A9A-80	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		810 mA	4194304 words	COMMON	5	5	9		SIP30	DRAMs		70 Cel	3-STATE	4MX9	4M	Tin/Lead (Sn/Pb)	SINGLE		26.289 mm	Not Qualified	37748736 bit	e0	.009 Amp	80 ns
MC-424100A8A-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		640 mA	4194304 words	COMMON	5	5	8		SIP30	DRAMs		70 Cel	3-STATE	4MX8	4M	Tin/Lead (Sn/Pb)	SINGLE		24.0284 mm	Not Qualified	33554432 bit	e0	.008 Amp	100 ns
MC-421000A9AA-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		280 mA	1048576 words	COMMON	5	5	9		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M	Tin/Lead (Sn/Pb)	SINGLE		18.2626 mm	Not Qualified	9437184 bit	e0	.003 Amp	70 ns
MC-424000A9AA-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		900 mA	4194304 words	COMMON	5	5	9		SIP30	DRAMs		70 Cel	3-STATE	4MX9	4M	Tin/Lead (Sn/Pb)	SINGLE		26.289 mm	Not Qualified	37748736 bit	e0	.009 Amp	70 ns
MC-421000A9A-80	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		512		PLASTIC/EPOXY	NO	CMOS		630 mA	1048576 words	COMMON	5	5	9		SIP30,.2	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M	Tin/Lead (Sn/Pb)	SINGLE		21.6154 mm	Not Qualified	9437184 bit	e0	.003 Amp	80 ns
MC-421000B8B-10	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	480 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30		Not Qualified	8388608 bit		.008 Amp	100 ns
MC-42256AB8BA-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	256	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	180 mA	262144 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	256KX8	256K		SINGLE	R-PSMA-N30	16.7894 mm	Not Qualified	2097152 bit		.002 Amp	60 ns
MC-421000A9F-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	540 mA	1048576 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M		SINGLE	R-PSMA-N30	19.9898 mm	Not Qualified	9437184 bit		.003 Amp	100 ns
MC-424000A8FA-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	960 mA	4194304 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	4MX8	4M		SINGLE	R-PSMA-N30	20.2946 mm	Not Qualified	33554432 bit		.008 Amp	60 ns
MC-424000A9AA-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30		1024		PLASTIC/EPOXY	NO	CMOS		720 mA	4194304 words	COMMON	5	5	9		SIP30	DRAMs		70 Cel	3-STATE	4MX9	4M	Tin/Lead (Sn/Pb)	SINGLE		26.289 mm	Not Qualified	37748736 bit	e0	.009 Amp	100 ns
MC-421000A8FA-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	240 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.6624 mm	Not Qualified	8388608 bit		.002 Amp	60 ns
MC-421000A9B-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	810 mA	1048576 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX9	1M		SINGLE	R-PSMA-N30	19.9898 mm	Not Qualified	9437184 bit		.003 Amp	60 ns
MC-421000A8B-12	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	400 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	19.9898 mm	Not Qualified	8388608 bit		.008 Amp	120 ns
MC-421000A8BB-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	240 mA	1048576 words	COMMON	5	5	8	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	1MX8	1M		SINGLE	R-PSMA-N30	16.6624 mm	Not Qualified	8388608 bit		.002 Amp	60 ns
MC-41256A9B-15	Renesas Electronics	PAGE MODE DRAM	COMMERCIAL	30	SIMM	256	RECTANGULAR	PLASTIC/EPOXY	NO	MOS	NO LEAD		262144 words	COMMON	5	5	9	MICROELECTRONIC ASSEMBLY	SIM30	DRAMs	2.54 mm	70 Cel	3-STATE	256KX9	256K		SINGLE	R-PSMA-N30	16.7894 mm	Not Qualified	2359296 bit			150 ns

DRAM

DRAM, or Dynamic Random Access Memory, is a type of volatile computer memory that stores data in a digital format. It is commonly used in personal computers, laptops, mobile devices, and other digital devices.

DRAM stores digital data as a charge on a capacitor. Each capacitor in DRAM represents one bit of data, and the state of the capacitor is refreshed periodically to maintain its charge. The refreshing process is necessary because the charge on the capacitor leaks over time, leading to data loss. The refreshing process is managed by a control circuitry that is integrated into the DRAM module.

DRAM is an important component of modern computer systems because it provides fast access to data for the processor. DRAM access times are measured in nanoseconds, which is much faster than access times for secondary storage devices like hard drives or solid-state drives. DRAM is also cheaper and more energy-efficient than other types of computer memory.

There are different types of DRAM, including SDRAM (Synchronous DRAM), DDR SDRAM (Double Data Rate Synchronous DRAM), and GDDR SDRAM (Graphics Double Data Rate Synchronous DRAM). These different types of DRAM have different characteristics, such as speed, capacity, and power consumption, and are used in different types of computer systems.

One of the disadvantages of DRAM is that it is volatile, which means that it loses data when the power is turned off. To prevent data loss, DRAM is typically used in conjunction with non-volatile storage devices like hard drives or solid-state drives, which can store data even when the power is turned off.