Motorola DRAM 5

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Part	Manufacturer	Memory IC Type	Temperature Grade	No. of Terminals	Package Code	Refresh Cycles	Package Shape	Package Body Material	Access Mode	Surface Mount	No. of Functions	Technology	Terminal Form	Operating Mode	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	No. of Ports	JESD-30 Code	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Memory Density	Minimum Supply Voltage (Vsup)	Additional Features	JESD-609 Code	Maximum Standby Current	Length	Maximum Access Time
MCM6256BP12	Motorola	PAGE MODE DRAM	COMMERCIAL	16	DIP	256	RECTANGULAR	PLASTIC/EPOXY	PAGE	NO	1	NMOS	THROUGH-HOLE	ASYNCHRONOUS	72 mA	262144 words	SEPARATE	5	5	1	IN-LINE	DIP16,.3	DRAMs	2.54 mm	70 Cel	3-STATE	256KX1	256K	TIN LEAD	DUAL	1	R-PDIP-T16	5.5 V	4.19 mm	7.62 mm	Not Qualified	262144 bit	4.5 V	RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH	e0		19.05 mm	120 ns
MCM4116BC20	Motorola	PAGE MODE DRAM	COMMERCIAL	16	DIP	128	RECTANGULAR	CERAMIC		NO		MOS	THROUGH-HOLE			16384 words	SEPARATE		+-5,12	1	IN-LINE	DIP16,.3	DRAMs	2.54 mm	70 Cel	3-STATE	16KX1	16K	Tin/Lead (Sn/Pb)	DUAL		R-XDIP-T16				Not Qualified	16384 bit			e0			200 ns
MCM511000AJ80	Motorola	FAST PAGE DRAM	COMMERCIAL	20	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	FAST PAGE	YES	1	CMOS	J BEND	ASYNCHRONOUS	70 mA	1048576 words	SEPARATE	5	5	1	SMALL OUTLINE	SOJ20/26,.34	DRAMs	1.27 mm	70 Cel	3-STATE	1MX1	1M	TIN LEAD	DUAL	1	R-PDSO-J20	5.5 V	3.75 mm	7.62 mm	Not Qualified	1048576 bit	4.5 V	RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH; TEST MODE	e0	.001 Amp	17.145 mm	80 ns
MCM514256AJ10	Motorola	FAST PAGE DRAM	COMMERCIAL	20	SOJ	512	RECTANGULAR	PLASTIC/EPOXY	FAST PAGE	YES	1	CMOS	J BEND	ASYNCHRONOUS	60 mA	262144 words	COMMON	5	5	4	SMALL OUTLINE	SOJ20/26,.34	DRAMs	1.27 mm	70 Cel	3-STATE	256KX4	256K	TIN LEAD	DUAL	1	R-PDSO-J20	5.5 V	3.75 mm	7.62 mm	Not Qualified	1048576 bit	4.5 V	RAS ONLY/CAS BEFORE RAS/HIDDEN REFRESH	e0	.001 Amp	17.145 mm	100 ns
MCM514256AP70	Motorola	FAST PAGE DRAM	COMMERCIAL	20	DIP	512	RECTANGULAR	PLASTIC/EPOXY	FAST PAGE	NO	1	CMOS	THROUGH-HOLE	ASYNCHRONOUS	80 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	1	R-PDIP-T20	5.5 V	4.44 mm	7.62 mm	Not Qualified	1048576 bit	4.5 V	RAS ONLY; CAS BEFORE RAS; HIDDEN REFRESH	e0	.001 Amp	24.64 mm	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.