DIP MASK ROM 841

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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	Screening Level	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	Minimum Operating Temperature	Terminal Finish	Terminal Position	JESD-30 Code	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Memory Density	Minimum Supply Voltage (Vsup)	JESD-609 Code	Maximum Standby Current	Length	Maximum Access Time
TC534200P	Toshiba	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	60 mA	524288 words	5	5	8	IN-LINE	DIP40,.6	16	MASK ROMs	2.54 mm	70 Cel	3-STATE	512KX8	512K	0 Cel	TIN LEAD	DUAL	R-PDIP-T40	5.5 V	4.8 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V	e0	.00002 Amp	50.7 mm	150 ns
TC531001CP-12	Toshiba	MASK ROM	OTHER	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	50 mA	131072 words	5	5	8	IN-LINE	DIP32,.6		MASK ROMs	2.54 mm	70 Cel	3-STATE	128KX8	128K	-40 Cel	TIN LEAD	DUAL	R-PDIP-T32	5.5 V	4.8 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V	e0	.0002 Amp	42 mm	120 ns
UPD23C1000AC	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			40 mA	131072 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		128KX8	128K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	1048576 bit		e0	.0001 Amp		200 ns
HN62W328BP	Renesas Electronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		1048576 words	5		8	IN-LINE				2.54 mm	70 Cel		1MX8	1M	0 Cel		DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	8388608 bit	3 V			41.9 mm	300 ns
HN624116P-25L	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		2097152 words	5		8	IN-LINE		16		2.54 mm	70 Cel		2MX8	2M	0 Cel		DUAL	R-PDIP-T42	5.5 V	5.08 mm	15.24 mm	Not Qualified	16777216 bit	3.5 V			52.8 mm	250 ns
HN62442BP-10	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		131072 words	5		16	IN-LINE				2.54 mm	70 Cel		128KX16	128K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	2097152 bit	4.5 V			52.8 mm	100 ns
HN62438NP-15	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		1048576 words	5		8	IN-LINE		16		2.54 mm	70 Cel		1MX8	1M	0 Cel		DUAL	R-PDIP-T42	5.5 V	5.08 mm	15.24 mm	Not Qualified	8388608 bit	4.5 V			52.8 mm	150 ns
HN624316PN-12	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		2097152 words	5		8	IN-LINE		16		2.54 mm	70 Cel		2MX8	2M	0 Cel		DUAL	R-PDIP-T42	5.5 V	5.08 mm	15.24 mm	Not Qualified	16777216 bit	4.5 V			52.8 mm	120 ns
HN62328BP	Renesas Electronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		1048576 words	5		8	IN-LINE				2.54 mm	70 Cel		1MX8	1M	0 Cel		DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	8388608 bit	4.5 V			41.9 mm	200 ns
HN62412P-20	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		262144 words	5		8	IN-LINE		16		2.54 mm	70 Cel		256KX8	256K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	2097152 bit	4.5 V			52.8 mm	200 ns
HN62444P	Renesas Electronics	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		512KX8	512K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			52.8 mm	100 ns
HN62321EP-20	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		131072 words	5		8	IN-LINE				2.54 mm	70 Cel		128KX8	128K	0 Cel		DUAL	R-PDIP-T28	5.5 V	5.7 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V			35.6 mm	200 ns
HN62415P-15	Renesas Electronics	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		512KX8	512K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			52.8 mm	150 ns
UPD23C64EC-1	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			30 mA	8192 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		8KX8	8K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	65536 bit		e0			150 ns
HN62444BP-10	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		262144 words	5		16	IN-LINE				2.54 mm	70 Cel		256KX16	256K	0 Cel		DUAL	R-PDIP-T40	5.25 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.75 V			52.8 mm	100 ns
HN62454NP-85	Renesas Electronics	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		512KX8	512K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			52.8 mm	85 ns
HN62415P-12	Renesas Electronics	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		512KX8	512K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			52.8 mm	120 ns
UPD23C16000LWCZ	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			25 mA	1048576 words		3/3.3	16	IN-LINE	DIP42,.6	8	MASK ROMs	2.54 mm	70 Cel		1MX16	1M	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T42				Not Qualified	16777216 bit		e0	.00002 Amp		200 ns
CDP1831CD/3	Renesas Electronics	MASK ROM	MILITARY	24	DIP	RECTANGULAR	CERAMIC	NO		CMOS	MIL-STD-883 Class B (Modified)	THROUGH-HOLE			10 mA	512 words	5	5	8	IN-LINE	DIP24,.6		MASK ROMs	2.54 mm	125 Cel		512X8	512	-55 Cel	Tin/Lead (Sn/Pb)	DUAL	R-XDIP-T24				Not Qualified	4096 bit		e0	.0002 Amp		1000 ns
UPD23C8000XCZ-XXX	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			50 mA	524288 words	5	5	16	IN-LINE	DIP42,.6	8	MASK ROMs	2.54 mm	70 Cel		512KX16	512K	0 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T42				Not Qualified	8388608 bit		e0	.0001 Amp		120 ns
HN62454P-85	Renesas Electronics	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		512KX8	512K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			52.8 mm	85 ns
CDP1831CD	Renesas Electronics	MASK ROM	INDUSTRIAL	24	DIP	RECTANGULAR	CERAMIC	NO		CMOS		THROUGH-HOLE			10 mA	512 words	5	5	8	IN-LINE	DIP24,.6		MASK ROMs	2.54 mm	85 Cel		512X8	512	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-XDIP-T24				Not Qualified	4096 bit		e0	.0002 Amp		1000 ns
HN62318BP	Renesas Electronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		1048576 words	5		8	IN-LINE				2.54 mm	70 Cel		1MX8	1M	0 Cel		DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	8388608 bit	4.5 V			41.9 mm	150 ns
CDP1833CD/3	Renesas Electronics	MASK ROM	INDUSTRIAL	24	DIP	RECTANGULAR	CERAMIC	NO		CMOS	MIL-STD-883 Class B (Modified)	THROUGH-HOLE			10 mA	1024 words	5	5	8	IN-LINE	DIP24,.6		MASK ROMs	2.54 mm	85 Cel		1KX8	1K	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-XDIP-T24				Not Qualified	8192 bit		e0	.0002 Amp		775 ns
HN62315BP-15	Renesas Electronics	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		512KX8	512K	0 Cel		DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			41.9 mm	150 ns
HN62331P-12	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		131072 words	5		8	IN-LINE				2.54 mm	70 Cel		128KX8	128K	0 Cel		DUAL	R-PDIP-T28	5.5 V	5.7 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V			35.6 mm	120 ns
HN62321EP	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		131072 words	5		8	IN-LINE				2.54 mm	70 Cel		128KX8	128K	0 Cel		DUAL	R-PDIP-T28	5.5 V	5.7 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V			35.6 mm	200 ns
HN62438PN-15	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		1048576 words	5		8	IN-LINE		16		2.54 mm	70 Cel		1MX8	1M	0 Cel		DUAL	R-PDIP-T42	5.5 V	5.08 mm	15.24 mm	Not Qualified	8388608 bit	4.5 V			52.8 mm	150 ns
UPD23C2000AC-1	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			65 mA	2097152 words			1	IN-LINE	DIP40,.6		MASK ROMs	2.54 mm	70 Cel		2MX1	2M	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T40				Not Qualified	2097152 bit		e0			175 ns
HN62321P-15	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		131072 words	5		8	IN-LINE				2.54 mm	70 Cel		128KX8	128K	0 Cel		DUAL	R-PDIP-T28	5.5 V	5.7 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V			35.6 mm	150 ns
UPD23C64EC	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			25 mA	8192 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		8KX8	8K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	65536 bit		e0			200 ns
UPD23C8001EJCZ-XXX	Renesas Electronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			50 mA	1048576 words	5	5	8	IN-LINE	DIP32,.6		MASK ROMs	2.54 mm	70 Cel		1MX8	1M	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T32				Not Qualified	8388608 bit		e0	.0001 Amp		120 ns
UPD2364EC-1	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		MOS		THROUGH-HOLE			80 mA	8192 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		8KX8	8K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	65536 bit		e0			200 ns
UPD23C8000CZ	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			50 mA	524288 words	5	5	16	IN-LINE	DIP42,.6	8	MASK ROMs	2.54 mm	70 Cel		512KX16	512K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T42				Not Qualified	8388608 bit		e0	.0001 Amp		250 ns
HN62331AP	Renesas Electronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		131072 words	5		8	IN-LINE				2.54 mm	70 Cel		128KX8	128K	0 Cel		DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V			41.9 mm	120 ns
UPD23C2001C	Renesas Electronics	MASK ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			40 mA	262144 words	5	5	8	IN-LINE	DIP32,.6		MASK ROMs	2.54 mm	70 Cel		256KX8	256K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T32				Not Qualified	2097152 bit		e0	.0001 Amp		250 ns
HN62314BP-20	Renesas Electronics	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		512KX8	512K	0 Cel		DUAL	R-PDIP-T32	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			41.9 mm	200 ns
UPD23C2000C	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			40 mA	2097152 words			1	IN-LINE	DIP40,.6		MASK ROMs	2.54 mm	70 Cel		2MX1	2M	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T40				Not Qualified	2097152 bit		e0			250 ns
UPD23C128EC	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			25 mA	16384 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		16KX8	16K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	131072 bit		e0			200 ns
CDP1832E	Renesas Electronics	MASK ROM	INDUSTRIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			20 mA	512 words		5/10	8	IN-LINE	DIP24,.6		MASK ROMs	2.54 mm	85 Cel		512X8	512	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T24				Not Qualified	4096 bit		e0	.0002 Amp		1000 ns
UPD2364EC	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		MOS		THROUGH-HOLE			80 mA	8192 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		8KX8	8K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	65536 bit		e0			250 ns
UPD23C8000LXCZ-XXX	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			25 mA	524288 words		3/3.3	16	IN-LINE	DIP42,.6	8	MASK ROMs	2.54 mm	70 Cel		512KX16	512K	0 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T42				Not Qualified	8388608 bit		e0	.00002 Amp		200 ns
HN62444BPN-12	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		262144 words	5		16	IN-LINE				2.54 mm	70 Cel		256KX16	256K	0 Cel		DUAL	R-PDIP-T40	5.25 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.75 V			52.8 mm	120 ns
HN62418P-15	Renesas Electronics	MASK ROM	COMMERCIAL	42	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		1048576 words	5		8	IN-LINE		16		2.54 mm	70 Cel		1MX8	1M	0 Cel		DUAL	R-PDIP-T42	5.5 V	5.08 mm	15.24 mm	Not Qualified	8388608 bit	4.5 V			52.8 mm	150 ns
UPD23C1000C-1	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			40 mA	131072 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		128KX8	128K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	1048576 bit		e0			200 ns
UPD23C1024EC	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			40 mA	65536 words	5	5	16	IN-LINE	DIP40,.6		MASK ROMs	2.54 mm	70 Cel		64KX16	64K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T40				Not Qualified	1048576 bit		e0	.0001 Amp		200 ns
UPD23C128EC-1	Renesas Electronics	MASK ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			30 mA	16384 words	5	5	8	IN-LINE	DIP28,.6		MASK ROMs	2.54 mm	70 Cel		16KX8	16K	-10 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28				Not Qualified	131072 bit		e0			150 ns
HN62434P-15	Renesas Electronics	MASK ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		524288 words	5		8	IN-LINE				2.54 mm	70 Cel		512KX8	512K	0 Cel		DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V			52.8 mm	150 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.