FAST PAGE DRAM DRAM 2,400+

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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	Self Refresh	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	Reverse Pinout	Output Characteristics	Organization	No. of Words Code	Terminal Finish	Terminal Position	JESD-30 Code	Maximum Supply Voltage (Vsup)	Qualification	Memory Density	Minimum Supply Voltage (Vsup)	JESD-609 Code	Maximum Standby Current	Maximum Access Time
UPD42S4263LG5M-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	110 mA	262144 words	YES	COMMON	3.3	3.3	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.36,32	DRAMs	.8 mm	70 Cel	YES	3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit		e0	.0001 Amp	80 ns
UPD424260LV-A60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	140 mA	262144 words	NO	COMMON	3.3	3.3	16	IN-LINE	ZIP40,.1	DRAMs	1.27 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T40		Not Qualified	4194304 bit		e0	.0005 Amp	60 ns
UPD42S16400LG3A60-7KD	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			60 ns
UPD424256C-60L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	DIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	90 mA	262144 words		COMMON	5	5	4	IN-LINE	DIP20,.3	DRAMs	2.54 mm	70 Cel		3-STATE	256KX4	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T20		Not Qualified	1048576 bit		e0	.0002 Amp	60 ns
UPD42S18170G5-50-7JF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	44	TSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	170 mA	1048576 words	YES	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP44/50,.46,32	DRAMs	.8 mm	70 Cel		3-STATE	1MX16	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G44		Not Qualified	16777216 bit		e0	.0004 Amp	50 ns
UPD42S17900LV-A70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	32	ZIP	2048	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	100 mA	2097152 words	YES	COMMON	3.3	3.3	9	IN-LINE	ZIP32,.1	DRAMs	1.27 mm	70 Cel		3-STATE	2MX9	2M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T32		Not Qualified	18874368 bit		e0	.0001 Amp	70 ns
UPD42S16800V-50	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	28	ZIP	4096	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	100 mA	2097152 words	YES	COMMON	5	5	8	IN-LINE	ZIP28,.1	DRAMs	1.27 mm	70 Cel		3-STATE	2MX8	2M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T28		Not Qualified	16777216 bit		e0	.0004 Amp	50 ns
UPD4216180LLE-A60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	42	SOJ	4096	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	100 mA	1048576 words	NO	COMMON	3.3	3.3	18	SMALL OUTLINE	SOJ42,.44	DRAMs	1.27 mm	70 Cel		3-STATE	1MX18	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J42		Not Qualified	18874368 bit		e0	.0004 Amp	60 ns
UPD42S4100AV-60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	ZIP	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	120 mA	4194304 words	YES	SEPARATE	5	5	1	IN-LINE	ZIP20,.1	DRAMs	1.27 mm	70 Cel		3-STATE	4MX1	4M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T20		Not Qualified	4194304 bit		e0	.0002 Amp	60 ns
UPD4216900G5-60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	32	TSOP	4096	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	100 mA	2097152 words	NO	COMMON	5	5	9	SMALL OUTLINE, THIN PROFILE	TSOP32,.46	DRAMs	1.27 mm	70 Cel		3-STATE	2MX9	2M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G32		Not Qualified	18874368 bit		e0	.0004 Amp	60 ns
UPD4217410V-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	24	ZIP	2048	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE		4194304 words	NO	COMMON	5	5	4	IN-LINE	ZIP24,.1	DRAMs	1.27 mm	70 Cel		3-STATE	4MX4	4M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T24		Not Qualified	16777216 bit		e0		80 ns
UPD424900G5-80-7JD	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	28	TSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	140 mA	524288 words	NO	COMMON	5	5	9	SMALL OUTLINE, THIN PROFILE	TSOP28,.46	DRAMs	1.27 mm	70 Cel		3-STATE	512KX9	512K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G28		Not Qualified	4718592 bit		e0	.001 Amp	80 ns
UPD4265400G5-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	32	TSOP	4096	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	90 mA	16777216 words	NO	COMMON	3.3	3.3	4	SMALL OUTLINE, THIN PROFILE	TSOP32,.46	DRAMs	1.27 mm	70 Cel		3-STATE	16MX4	16M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G32		Not Qualified	67108864 bit		e0	.0005 Amp	80 ns
UPD424100LV-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	ZIP	1024	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	60 mA	4194304 words	NO	SEPARATE	3.3	3.3	1	IN-LINE	ZIP20,.1	DRAMs	1.27 mm	70 Cel		3-STATE	4MX1	4M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T20		Not Qualified	4194304 bit		e0	.0002 Amp	80 ns
UPD42S4800LG5A60	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			80 ns
UPD42S17900G5M70	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			70 ns
UPD42S17400LLE-A60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	24	SOJ	2048	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	100 mA	4194304 words	YES	COMMON	3.3	3.3	4	SMALL OUTLINE	SOJ24/28,.44	DRAMs	1.27 mm	70 Cel		3-STATE	4MX4	4M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J24		Not Qualified	16777216 bit		e0	.0001 Amp	60 ns
UPD42S4170G5-70-7JF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	120 mA	262144 words	YES	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	DRAMs	.8 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit		e0	.0002 Amp	70 ns
UPD4217100G5-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	24	TSOP	2048	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	100 mA	16777216 words	NO	SEPARATE	5	5	1	SMALL OUTLINE, THIN PROFILE	TSOP24/28,.46	DRAMs	1.27 mm	70 Cel		3-STATE	16MX1	16M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G24		Not Qualified	16777216 bit		e0	.001 Amp	70 ns
UPD42S16900G5-50	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			50 ns
UPD424263ALE-60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	140 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE	SOJ40,.44	DRAMs	1.27 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J40		Not Qualified	4194304 bit		e0	.0003 Amp	60 ns
UPD42S17400LLA-A50	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	24	SOJ	2048	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	120 mA	4194304 words	YES	COMMON	3.3	3.3	4	SMALL OUTLINE	SOJ24/26,.34	DRAMs	1.27 mm	70 Cel		3-STATE	4MX4	4M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J24		Not Qualified	16777216 bit		e0	.00015 Amp	50 ns
UPD42S18160LE-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	42	SOJ	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	140 mA	1048576 words	YES	COMMON	5	5	16	SMALL OUTLINE	SOJ42,.44	DRAMs	1.27 mm	70 Cel		3-STATE	1MX16	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J42		Not Qualified	16777216 bit		e0	.00025 Amp	80 ns
UPD42S18160G5-60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	44	TSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	160 mA	1048576 words	YES	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP44/50,.46,32	DRAMs	.8 mm	70 Cel		3-STATE	1MX16	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G44		Not Qualified	16777216 bit		e0	.00025 Amp	60 ns
UPD42S16800LG5A70-7KD	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			70 ns
UPD424263ALE-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	120 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE	SOJ40,.44	DRAMs	1.27 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J40		Not Qualified	4194304 bit		e0	.0003 Amp	80 ns
UPD42S4100LLA-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	SOJ	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	60 mA	4194304 words	YES	SEPARATE	3.3	3.3	1	SMALL OUTLINE	SOJ20/26,.34	DRAMs	1.27 mm	70 Cel		3-STATE	4MX1	4M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J20		Not Qualified	4194304 bit		e0	.0001 Amp	80 ns
UPD42S18180G5-50	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			50 ns
UPD42644GSM-80L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	TSSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	90 mA	1048576 words	NO	COMMON	5	5	4	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20/26,.36	DRAMs	.635 mm	70 Cel	YES	3-STATE	1MX4	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20		Not Qualified	4194304 bit		e0	.00012 Amp	80 ns
UPD42S17900LE-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	32	SOJ	2048	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	110 mA	2097152 words	YES	COMMON	5	5	9	SMALL OUTLINE	SOJ32,.44	DRAMs	1.27 mm	70 Cel		3-STATE	2MX9	2M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J32		Not Qualified	18874368 bit		e0	.0004 Amp	70 ns
UPD42S17900LG5-A70-7KD	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	32	TSOP	2048	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	100 mA	2097152 words	YES	COMMON	3.3	3.3	9	SMALL OUTLINE, THIN PROFILE	TSOP32,.46	DRAMs	1.27 mm	70 Cel	YES	3-STATE	2MX9	2M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G32		Not Qualified	18874368 bit		e0	.0001 Amp	70 ns
UPD42S65400LG-A60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	34	SOJ	4096	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND		16777216 words	YES	COMMON	3.3	3.3	4	SMALL OUTLINE	SOJ34,.54	DRAMs	1.27 mm	70 Cel		3-STATE	16MX4	16M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J34		Not Qualified	67108864 bit		e0		60 ns
UPD424100GS-80L-9KD	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	TSSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	90 mA	4194304 words	NO	SEPARATE	5	5	1	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20/26,.36	DRAMs	.635 mm	70 Cel	YES	3-STATE	4MX1	4M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20		Not Qualified	4194304 bit		e0	.0002 Amp	80 ns
UPD42S17800G5-60-7KD	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			60 ns
UPD4216180LE-50	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	42	SOJ	4096	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	120 mA	1048576 words	NO	COMMON	5	5	18	SMALL OUTLINE	SOJ42,.44	DRAMs	1.27 mm	70 Cel		3-STATE	1MX18	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J42		Not Qualified	18874368 bit		e0	.0004 Amp	50 ns
UPD42S4263AV-60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	140 mA	262144 words	YES	COMMON	5	5	16	IN-LINE	ZIP40,.1	DRAMs	1.27 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T40		Not Qualified	4194304 bit		e0	.0003 Amp	60 ns
UPD4216160LE-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	42	SOJ	4096	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	80 mA	1048576 words	NO	COMMON	5	5	16	SMALL OUTLINE	SOJ42,.44	DRAMs	1.27 mm	70 Cel		3-STATE	1MX16	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J42		Not Qualified	16777216 bit		e0	.001 Amp	80 ns
UPD42S4900ALE-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	28	SOJ	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	110 mA	524288 words	YES	COMMON	5	5	9	SMALL OUTLINE	SOJ28,.44	DRAMs	1.27 mm	70 Cel		3-STATE	512KX9	512K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J28		Not Qualified	4718592 bit		e0	.0003 Amp	70 ns
UPD42S16800G5-60-7KD	Renesas Electronics	FAST PAGE DRAM														5							70 Cel								5.5 V			4.5 V			60 ns
UPD42S16900V-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	32	ZIP	4096	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	80 mA	2097152 words	YES	COMMON	5	5	9	IN-LINE	ZIP32,.1	DRAMs	1.27 mm	70 Cel		3-STATE	2MX9	2M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T32		Not Qualified	18874368 bit		e0	.0004 Amp	80 ns
UPD4217180G5-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	44	TSOP	2048	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	120 mA	1048576 words	NO	COMMON	5	5	18	SMALL OUTLINE, THIN PROFILE	TSOP44/50,.46,32	DRAMs	.8 mm	70 Cel		3-STATE	1MX18	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G44		Not Qualified	18874368 bit		e0	.0004 Amp	70 ns
UPD42S18170LLE-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	42	SOJ	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	130 mA	1048576 words	YES	COMMON	3.3	3.3	16	SMALL OUTLINE	SOJ42,.44	DRAMs	1.27 mm	70 Cel		3-STATE	1MX16	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J42		Not Qualified	16777216 bit		e0	.0001 Amp	80 ns
UPD42S17100G3M-60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	24	TSOP	2048	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	110 mA	16777216 words	YES	SEPARATE	5	5	1	SMALL OUTLINE, THIN PROFILE	TSOP24/26,.36	DRAMs	1.27 mm	70 Cel	YES	3-STATE	16MX1	16M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G24		Not Qualified	16777216 bit		e0	.00025 Amp	60 ns
UPD42S16400LE-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	24	SOJ	4096	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	80 mA	4194304 words	YES	COMMON	5	5	4	SMALL OUTLINE	SOJ24/28,.44	DRAMs	1.27 mm	70 Cel		3-STATE	4MX4	4M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J24		Not Qualified	16777216 bit		e0	.00025 Amp	70 ns
UPD42S4900LG5M-A60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	28	TSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	110 mA	524288 words	YES	COMMON	3.3	3.3	9	SMALL OUTLINE, THIN PROFILE	TSOP28,.46	DRAMs	1.27 mm	70 Cel	YES	3-STATE	512KX9	512K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G28		Not Qualified	4718592 bit		e0	.0001 Amp	60 ns
UPD4218160LLE-A50	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	42	SOJ	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	170 mA	1048576 words	NO	COMMON	3.3	3.3	16	SMALL OUTLINE	SOJ42,.44	DRAMs	1.27 mm	70 Cel		3-STATE	1MX16	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J42		Not Qualified	16777216 bit		e0	.0005 Amp	50 ns
UPD42S17800V-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	28	ZIP	2048	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	90 mA	2097152 words	YES	COMMON	5	5	8	IN-LINE	ZIP28,.1	DRAMs	1.27 mm	70 Cel		3-STATE	2MX8	2M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T28		Not Qualified	16777216 bit		e0	.0004 Amp	80 ns
UPD424400GS-10-9JD	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	TSOP	1024	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	80 mA	1048576 words	NO	COMMON	5	5	4	SMALL OUTLINE, THIN PROFILE	TSOP20/26,.36	DRAMs	1.27 mm	70 Cel		3-STATE	1MX4	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20		Not Qualified	4194304 bit		e0	.001 Amp	100 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.