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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 Seated Height	Qualification	Memory Density	JESD-609 Code	Maximum Standby Current	Maximum Access Time
UPD42S4210ALE-70	Renesas Electronics	EDO DRAM	COMMERCIAL	40	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	70 mA	262144 words	YES	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	.00008 Amp	70 ns
MC-42512A32BT-60	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	72	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	780 mA	524288 words	NO	COMMON	5	5	32	MICROELECTRONIC ASSEMBLY	SSIM72	DRAMs	1.27 mm	70 Cel		3-STATE	512KX32	512K		SINGLE	R-PSMA-N72	25.4 mm	Not Qualified	16777216 bit		.016 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
UPD42S4263LG5-A70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	120 mA	262144 words	YES	COMMON	3.3	3.3	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.36,32	DRAMs	.8 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit	e0	.0001 Amp	70 ns
UPD424256V-60L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	90 mA	262144 words		COMMON	5	5	4	IN-LINE	ZIP20,.1	DRAMs	1.27 mm	70 Cel		3-STATE	256KX4	256K	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T20		Not Qualified	1048576 bit	e0	.0002 Amp	60 ns
UPD424260G5-80-9KF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	44	SSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	145 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE, SHRINK PITCH	SOP44,.4,32	DRAMs	.8 mm	70 Cel	YES	3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G44		Not Qualified	4194304 bit	e0	.001 Amp	80 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
UPD421805G5-25	Renesas Electronics	EDO DRAM	COMMERCIAL	28	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	100 mA	131072 words	NO	COMMON	5	5	8	SMALL OUTLINE, THIN PROFILE	TSOP28,.46	DRAMs	1.27 mm	70 Cel		3-STATE	128KX8	128K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G28		Not Qualified	1048576 bit	e0	.001 Amp	70 ns
UPD421000GX-60L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	TSSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	90 mA	1048576 words		SEPARATE	5	5	1	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20/24,.63,20	DRAMs	.5 mm	70 Cel		3-STATE	1MX1	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20		Not Qualified	1048576 bit	e0	.0002 Amp	60 ns
MC-42256A32B-10	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	72	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	480 mA	262144 words		COMMON	5	5	32	MICROELECTRONIC ASSEMBLY	SSIM72	DRAMs	1.27 mm	70 Cel		3-STATE	256KX32	256K		SINGLE	R-PSMA-N72	25.4 mm	Not Qualified	8388608 bit		.008 Amp	100 ns
UPD424263AG5-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	130 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.36,32	DRAMs	.8 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit	e0	.0003 Amp	70 ns
UPD42S4260LG5M-12L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	50 mA	262144 words	YES	COMMON	3.3	3.3	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	DRAMs	.8 mm	70 Cel	YES	3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit	e0	.00012 Amp	120 ns
UPD424256LA-70L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	80 mA	262144 words		COMMON	5	5	4	SMALL OUTLINE	SOJ20/26,.34	DRAMs	1.27 mm	70 Cel		3-STATE	256KX4	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J20		Not Qualified	1048576 bit	e0	.0002 Amp	70 ns
UPD424260AV-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	120 mA	262144 words	NO	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	80 ns
UPD42S4260G5-80-7JF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	145 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	.00015 Amp	80 ns
UPD42S4260LG5-A70-7KF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	120 mA	262144 words	YES	COMMON	3.3	3.3	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	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	70 ns
UPD42S4210G5-60-A	Renesas Electronics	EDO DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	160 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	.00015 Amp	60 ns
UPD424270G5-10-7KF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	120 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	DRAMs	.8 mm	70 Cel	YES	3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit	e0	.001 Amp	100 ns
UPD411001C-12	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	18	DIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	MOS	THROUGH-HOLE		1048576 words		SEPARATE	5	5	1	IN-LINE	DIP18,.3	DRAMs	2.54 mm	70 Cel		3-STATE	1MX1	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T18		Not Qualified	1048576 bit	e0		120 ns
UPD421805LE-30-A	Renesas Electronics	EDO DRAM	COMMERCIAL	28	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	100 mA	131072 words	NO	COMMON	5	5	8	SMALL OUTLINE	SOJ28,.44	DRAMs	1.27 mm	70 Cel		3-STATE	128KX8	128K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-J28		Not Qualified	1048576 bit	e0	.001 Amp	70 ns
UPD424256GX-10L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	TSSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	60 mA	262144 words		COMMON	5	5	4	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20/24,.63,20	DRAMs	.5 mm	70 Cel		3-STATE	256KX4	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20		Not Qualified	1048576 bit	e0	.0002 Amp	100 ns
UPD42S4210AG5-60	Renesas Electronics	EDO DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	80 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	.00015 Amp	60 ns
UPD42S4260LG5-15	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	45 mA	262144 words	YES	COMMON	3.3	3.3	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	.00025 Amp	150 ns
UPD424260LV-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	110 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	80 ns
UPD424260LLE-A70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	120 mA	262144 words	NO	COMMON	3.3	3.3	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	.0005 Amp	70 ns
UPD421001C-10	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	18	DIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	60 mA	1048576 words		SEPARATE	5	5	1	IN-LINE	DIP18,.3	DRAMs	2.54 mm	70 Cel		3-STATE	1MX1	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T18		Not Qualified	1048576 bit	e0	.001 Amp	100 ns
UPD42S4280LV-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	130 mA	262144 words	YES	COMMON	3.3	3.3	18	IN-LINE	ZIP40,.1	DRAMs	1.27 mm	70 Cel		3-STATE	256KX18	256K	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T40		Not Qualified	4718592 bit	e0	.0001 Amp	80 ns
MC-421000A9B-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
UPD424260LG5-A60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	140 mA	262144 words	NO	COMMON	3.3	3.3	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	.0005 Amp	60 ns
UPD424260AG5M-80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	120 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	DRAMs	.8 mm	70 Cel	YES	3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit	e0	.0003 Amp	80 ns
UPD424256GXM-60L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	TSSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	90 mA	262144 words		COMMON	5	5	4	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20/24,.63,20	DRAMs	.5 mm	70 Cel	YES	3-STATE	256KX4	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20		Not Qualified	1048576 bit	e0	.0002 Amp	60 ns
UPD421001C-60	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	18	DIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	90 mA	1048576 words		SEPARATE	5	5	1	IN-LINE	DIP18,.3	DRAMs	2.54 mm	70 Cel		3-STATE	1MX1	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T18		Not Qualified	1048576 bit	e0	.001 Amp	60 ns
MC-42256A32BT-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	72	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	640 mA	262144 words		COMMON	5	5	32	MICROELECTRONIC ASSEMBLY	SSIM72	DRAMs	1.27 mm	70 Cel		3-STATE	256KX32	256K		SINGLE	R-PSMA-N72	25.4 mm	Not Qualified	8388608 bit		.008 Amp	70 ns
MC-421000A8F-70	Renesas Electronics	FAST PAGE DRAM MODULE	COMMERCIAL	30	SIMM	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	NO LEAD	640 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	70 ns
UPD42S4260LV-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	120 mA	262144 words	YES	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	.0001 Amp	80 ns
MC-421000B8A-80	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	30		512		PLASTIC/EPOXY	NO	CMOS		560 mA	1048576 words		COMMON	5	5	8		SIP30,.2	DRAMs	2.54 mm	70 Cel		3-STATE	1MX8	1M	Tin/Lead (Sn/Pb)	SINGLE			Not Qualified	8388608 bit	e0	.008 Amp	80 ns
UPD424260LLE-A80	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	110 mA	262144 words	NO	COMMON	3.3	3.3	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	.0005 Amp	80 ns
UPD421001C-80	Renesas Electronics	NIBBLE MODE DRAM	COMMERCIAL	18	DIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	70 mA	1048576 words		SEPARATE	5	5	1	IN-LINE	DIP18,.3	DRAMs	2.54 mm	70 Cel		3-STATE	1MX1	1M	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T18		Not Qualified	1048576 bit	e0	.001 Amp	80 ns
UPD424210ALLE-A80	Renesas Electronics	EDO DRAM	COMMERCIAL	40	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	60 mA	262144 words	NO	COMMON	3.3	3.3	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	.0005 Amp	80 ns
UPD42S4260ALE-60	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	J BEND	140 mA	262144 words	YES	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
UPD421000V-10L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	ZIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	60 mA	1048576 words		SEPARATE	5	5	1	IN-LINE	ZIP20,.1	DRAMs	1.27 mm	70 Cel		3-STATE	1MX1	1M	Tin/Lead (Sn/Pb)	ZIG-ZAG	R-PZIP-T20		Not Qualified	1048576 bit	e0	.0002 Amp	100 ns
UPD424260AG5M-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	130 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	DRAMs	.8 mm	70 Cel	YES	3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit	e0	.0003 Amp	70 ns
UPD42S4260G5M-70	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	160 mA	262144 words	YES	COMMON	5	5	16	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	DRAMs	.8 mm	70 Cel	YES	3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4194304 bit	e0	.00015 Amp	70 ns
UPD424256C-10	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	DIP	512	RECTANGULAR	PLASTIC/EPOXY	NO	CMOS	THROUGH-HOLE	60 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	.001 Amp	100 ns
UPD424256GX-80L	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	20	TSSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	70 mA	262144 words		COMMON	5	5	4	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20/24,.63,20	DRAMs	.5 mm	70 Cel		3-STATE	256KX4	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20		Not Qualified	1048576 bit	e0	.0002 Amp	80 ns
UPD42S4280G5-80-7JF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	175 mA	262144 words	YES	COMMON	5	5	18	SMALL OUTLINE, THIN PROFILE	TSOP40/44,.46,32	DRAMs	.8 mm	70 Cel		3-STATE	256KX18	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G40		Not Qualified	4718592 bit	e0	.00015 Amp	80 ns
UPD424260G5-70-9JF	Renesas Electronics	FAST PAGE DRAM	COMMERCIAL	44	SSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	160 mA	262144 words	NO	COMMON	5	5	16	SMALL OUTLINE, SHRINK PITCH	SOP44,.4,32	DRAMs	.8 mm	70 Cel		3-STATE	256KX16	256K	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G44		Not Qualified	4194304 bit	e0	.001 Amp	70 ns
UPD424210G5-70-7JF	Renesas Electronics	EDO DRAM	COMMERCIAL	40	TSOP	512	RECTANGULAR	PLASTIC/EPOXY	YES	CMOS	GULL WING	150 mA	262144 words	NO	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	.001 Amp	70 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.