COMMERCIAL MASK ROM 2,356

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Part	Manufacturer	Memory IC Type	Temperature Grade	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	No. of Functions	Technology	Terminal Form	Parallel or Serial	Operating Mode	Maximum Supply Current	No. of Words	Nominal Supply Voltage / Vsup (V)	Power Supplies (V)	Memory Width	Package Style (Meter)	Package Equivalence Code	Alternate Memory Width	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Output Characteristics	Organization	No. of Words Code	Terminal Finish	Terminal Position	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
KM23C2000HG-10	Samsung	MASK ROM	COMMERCIAL	32	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS	GULL WING	PARALLEL	ASYNCHRONOUS	40 mA	262144 words	5	5	8	SMALL OUTLINE	SOP32,.56		MASK ROMs	1.27 mm	70 Cel	3-STATE	256KX8	256K	TIN LEAD	DUAL	R-PDSO-G32	5.5 V	3 mm	11.43 mm	Not Qualified	2097152 bit	4.5 V		e0	.00005 Amp	20.47 mm	100 ns
KM23C4100AFP1-20	Samsung	MASK ROM	COMMERCIAL	44	WQFP	SQUARE	CERAMIC, METAL-SEALED COFIRED	YES	1	CMOS	GULL WING	PARALLEL	ASYNCHRONOUS	50 mA	524288 words	5	5	8	FLATPACK, WINDOW	QFP44,.7SQ,32	16	MASK ROMs	.8 mm	70 Cel	3-STATE	512KX8	512K	TIN LEAD	QUAD	S-CQFP-G44	5.5 V	2.8 mm	14 mm	Not Qualified	4194304 bit	4.5 V		e0	.00005 Amp	14 mm	200 ns
K3P7C1000B-GC10	Samsung	MASK ROM	COMMERCIAL	44	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS	GULL WING	PARALLEL	ASYNCHRONOUS	150 mA	4194304 words	5	5	16	SMALL OUTLINE	SOP44,.63	8	MASK ROMs	1.27 mm	70 Cel		4MX16	4M	TIN LEAD	DUAL	R-PDSO-G44	5.5 V	3.1 mm	12.6 mm	Not Qualified	67108864 bit	4.5 V	ALSO CONFIGURABLE AS 4M X 16	e0	.0001 Amp	28.5 mm	100 ns
KM23C8000B-12	Samsung	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	60 mA	1048576 words	5	5	8	IN-LINE	DIP32,.6		MASK ROMs	2.54 mm	70 Cel	3-STATE	1MX8	1M	TIN LEAD	DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	8388608 bit	4.5 V		e0	.00005 Amp	41.91 mm	120 ns

MASK ROM

Mask ROM, or Read-Only Memory, is a type of non-volatile computer memory that is programmed during the manufacturing process. Mask ROM is designed to permanently store data and cannot be reprogrammed after it has been manufactured.

Mask ROM is created by a process known as photolithography. This process involves using a mask, or template, to expose specific areas of a silicon wafer to ultraviolet light. The areas that are exposed to the light are then etched away, leaving behind the patterns that make up the memory cells. Once the memory cells have been created, they are permanently programmed with the data that they will store.

Mask ROM is commonly used in devices that require permanent storage of data, such as game consoles, calculators, and other electronic devices. Because the data is permanently programmed during manufacturing, mask ROM provides a reliable and secure way to store critical data, such as system settings, firmware, and other important information.

One of the advantages of using mask ROM is that it is a cost-effective way to produce large quantities of memory. Because the data is programmed during the manufacturing process, the cost per unit is relatively low compared to other types of non-volatile memory, such as EEPROM or flash memory.