STMicroelectronics MASK ROM 9

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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
M2364B1	STMicroelectronics	MASK ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		MOS	THROUGH-HOLE			80 mA	8192 words	5	5	8	IN-LINE	DIP24,.6		MASK ROMs	2.54 mm	70 Cel		8KX8	8K	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T24				Not Qualified	65536 bit			e0			250 ns
M23C2001B1	STMicroelectronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		262144 words	5		8	IN-LINE				2.54 mm	70 Cel	3-STATE	256KX8	256K		DUAL	R-PDIP-T32	5.5 V		15.24 mm	Not Qualified	2097152 bit	4.5 V	AUTOMATIC POWER-DOWN				120 ns
M23C1001B1	STMicroelectronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	40 mA	131072 words	5	5	8	IN-LINE	DIP32,.6		MASK ROMs	2.54 mm	70 Cel	3-STATE	128KX8	128K	TIN LEAD	DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V	AUTOMATIC POWER-DOWN	e0	.00002 Amp	41.91 mm	100 ns
M23C512B1	STMicroelectronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	40 mA	65536 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel	3-STATE	64KX8	64K	TIN LEAD	DUAL	R-PDIP-T28	5.5 V	5.08 mm	15.24 mm	Not Qualified	524288 bit	4.5 V	AUTOMATIC POWER-DOWN	e0	.00002 Amp	37.085 mm	100 ns
M23C4001B1	STMicroelectronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		524288 words	5		8	IN-LINE				2.54 mm	70 Cel	3-STATE	512KX8	512K		DUAL	R-PDIP-T32	5.5 V		15.24 mm	Not Qualified	4194304 bit	4.5 V	AUTOMATIC POWER-DOWN				120 ns
M23C1000B1	STMicroelectronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	40 mA	131072 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel	3-STATE	128KX8	128K	TIN LEAD	DUAL	R-PDIP-T28	5.5 V	5.08 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V	AUTOMATIC POWER-DOWN	e0	.00002 Amp	37.085 mm	100 ns
M2316HB1	STMicroelectronics	MASK ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		MOS	THROUGH-HOLE			70 mA	2048 words			8	IN-LINE	DIP24,.6		MASK ROMs	2.54 mm	70 Cel		2KX8	2K	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T24				Not Qualified	16384 bit			e0			300 ns
M23C4000B1	STMicroelectronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS	THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		524288 words	5		8	IN-LINE		16		2.54 mm	70 Cel	3-STATE	512KX8	512K		DUAL	R-PDIP-T40	5.5 V		15.24 mm	Not Qualified	4194304 bit	4.5 V	AUTOMATIC POWER-DOWN			52.18 mm	120 ns
M2365B1	STMicroelectronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		MOS	THROUGH-HOLE			70 mA	8192 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		8KX8	8K	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	65536 bit			e0			250 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.