COMMERCIAL OTP ROM 2,400+

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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	Input/Output Type	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	Reverse Pinout	Output Characteristics	Organization	No. of Words Code	Terminal Position	JESD-30 Code	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Memory Density	Minimum Supply Voltage (Vsup)	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Maximum Standby Current	Length	Maximum Access Time	Programming Voltage (V)
SN74S477J	Texas Instruments	OTP ROM	COMMERCIAL	18	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE				1024 words				4	IN-LINE	DIP18,.3		OTP ROMs	2.54 mm	70 Cel			1KX4	1K	DUAL	R-XDIP-T18				Not Qualified	4096 bit		NOT SPECIFIED	NOT SPECIFIED
TMS27PC32-150NL	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	50 mA	4096 words	COMMON	5	5	8	IN-LINE	DIP24,.6		OTP ROMs	2.54 mm	70 Cel		3-STATE	4KX8	4K	DUAL	R-PDIP-T24	5.25 V	5.08 mm	15.24 mm	Not Qualified	32768 bit	4.75 V	NOT SPECIFIED	NOT SPECIFIED	.00025 Amp	31.75 mm	150 ns
TBP38S42-25FN	Texas Instruments	OTP ROM	COMMERCIAL	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES		TTL		J BEND			135 mA	512 words		5	5	8	CHIP CARRIER	LDCC20,.4SQ		OTP ROMs	1.27 mm	70 Cel			512X8	512	QUAD	S-PQCC-J20				Not Qualified	4096 bit						25 ns
TBP28S42N1	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				512 words		5	5	8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-PDIP-T20				Not Qualified	4096 bit		NOT SPECIFIED	NOT SPECIFIED
TMS27PC49-4NL	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		8192 words		5		8	IN-LINE				2.54 mm	70 Cel		3-STATE	8KX8	8K	DUAL	R-PDIP-T24	5.25 V	5.08 mm	15.24 mm	Not Qualified	65536 bit	4.75 V				31.75 mm	45 ns
TBP24S41N3	Texas Instruments	OTP ROM	COMMERCIAL	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				1024 words		5	5	4	IN-LINE	DIP18,.3		OTP ROMs	2.54 mm	70 Cel			1KX4	1K	DUAL	R-PDIP-T18					4096 bit		NOT SPECIFIED	NOT SPECIFIED			60 ns
TBP18SA42J	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE				512 words				8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-XDIP-T20				Not Qualified	4096 bit						75 ns
TMS27LV010A-20FML4	Texas Instruments	OTP ROM	COMMERCIAL	32	QCCJ	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS		J BEND	PARALLEL	ASYNCHRONOUS	30 mA	131072 words	COMMON	3.3	3.3/5	8	CHIP CARRIER	LDCC32,.5X.6		OTP ROMs	1.27 mm	70 Cel		3-STATE	128KX8	128K	QUAD	R-PQCC-J32	3.6 V	3.56 mm	11.43 mm	Not Qualified	1048576 bit	3 V			.000025 Amp	13.97 mm	200 ns
TMS27PC240-80FML	Texas Instruments	OTP ROM	COMMERCIAL	44	QCCJ	SQUARE	PLASTIC/EPOXY	YES		CMOS		J BEND			50 mA	262144 words	COMMON	5	5	16	CHIP CARRIER	LDCC44,.7SQ		OTP ROMs	1.27 mm	70 Cel		3-STATE	256KX16	256K	QUAD	S-PQCC-J44				Not Qualified	4194304 bit				.0001 Amp		80 ns
TBP28S85JP4	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE				1024 words		5	5	8	IN-LINE	DIP24,.3		OTP ROMs	2.54 mm	70 Cel			1KX8	1K	DUAL	R-XDIP-T24					8192 bit		NOT SPECIFIED	NOT SPECIFIED
TBP28S2708J4	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE			175 mA	1024 words				8	IN-LINE	DIP24,.6		OTP ROMs	2.54 mm	70 Cel			1KX8	1K	DUAL	R-XDIP-T24					8192 bit		NOT SPECIFIED	NOT SPECIFIED			70 ns
TBP28SA46NW	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	BIPOLAR		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	135 mA	512 words		5		8	IN-LINE	DIP24,.6		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-PDIP-T24	5.25 V	5.08 mm	15.24 mm	Not Qualified	4096 bit	4.75 V	NOT SPECIFIED	NOT SPECIFIED		31.75 mm	65 ns
SN74S472J4	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE				512 words		5	5	8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-XDIP-T20					4096 bit						75 ns
SN74S471NP1	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				256 words		5	5	8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			256X8	256	DUAL	R-PDIP-T20				Not Qualified	2048 bit						70 ns
SNM54S470J	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL	MIL-STD-883 Class C	THROUGH-HOLE				256 words		5	5	8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			256X8	256	DUAL	R-PDIP-T20				Not Qualified	2048 bit						80 ns
TBP38S165NT	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				2048 words		5	5	8	IN-LINE	DIP24,.3		OTP ROMs	2.54 mm	70 Cel			2KX8	2K	DUAL	R-PDIP-T24				Not Qualified	16384 bit		NOT SPECIFIED	NOT SPECIFIED
TBP38S030-15N	Texas Instruments	OTP ROM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE			125 mA	32 words		5	5	8	IN-LINE	DIP16,.3		OTP ROMs	2.54 mm	70 Cel			32X8	32	DUAL	R-PDIP-T16				Not Qualified			NOT SPECIFIED	NOT SPECIFIED			15 ns
TMS27C040P-10FML	Texas Instruments	OTP ROM	COMMERCIAL	32	QCCJ	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS		J BEND	PARALLEL	ASYNCHRONOUS		524288 words		5		8	CHIP CARRIER				1.27 mm	70 Cel		3-STATE	512KX8	512K	QUAD	R-PQCC-J32	5.5 V	3.56 mm	11.43 mm	Not Qualified	4194304 bit	4.5 V				13.97 mm	100 ns
SN74S188NP3	Texas Instruments	OTP ROM	COMMERCIAL	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE			110 mA	32 words		5	5	8	IN-LINE	DIP16,.3		OTP ROMs	2.54 mm	70 Cel			32X8	32	DUAL	R-PDIP-T16											40 ns
TMX27PC256-3NL	Texas Instruments	OTP ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		32768 words		5		8	IN-LINE				2.54 mm	70 Cel		3-STATE	32KX8	32K	DUAL	R-PDIP-T28		5.08 mm	15.24 mm	Not Qualified	262144 bit					36.32 mm	300 ns
TMS27PC512-20DDL	Texas Instruments	OTP ROM	COMMERCIAL	32	TSOP1	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS		GULL WING	PARALLEL	ASYNCHRONOUS	30 mA	65536 words	COMMON	5	5	8	SMALL OUTLINE, THIN PROFILE	TSSOP32,.8,20		OTP ROMs	.5 mm	70 Cel		3-STATE	64KX8	64K	DUAL	R-PDSO-G32	5.5 V	1.2 mm	8 mm	Not Qualified	524288 bit	4.5 V	NOT SPECIFIED	NOT SPECIFIED	.00025 Amp	18.415 mm	200 ns
TMS27PC510-120NL	Texas Instruments	OTP ROM	COMMERCIAL	32	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	250 mA	65536 words	COMMON	5	5	8	IN-LINE	DIP32,.6		OTP ROMs	2.54 mm	70 Cel		3-STATE	64KX8	64K	DUAL	R-PDIP-T32	5.25 V	5.08 mm	15.24 mm	Not Qualified	524288 bit	4.75 V	NOT SPECIFIED	NOT SPECIFIED	.00003 Amp	41.4 mm	120 ns
TBP34S1X-25FN	Texas Instruments	OTP ROM	COMMERCIAL	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES		TTL		J BEND			95 mA	256 words		5	5	4	CHIP CARRIER	LDCC20,.4SQ		OTP ROMs	1.27 mm	70 Cel			256X4	256	QUAD	S-PQCC-J20				Not Qualified	1024 bit		NOT SPECIFIED	NOT SPECIFIED			25 ns
TBP38R16X-18FN	Texas Instruments	OTP ROM	COMMERCIAL	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES		TTL		J BEND				2048 words				8	CHIP CARRIER	LDCC28,.5SQ		OTP ROMs	1.27 mm	70 Cel			2KX8	2K	QUAD	S-PQCC-J28				Not Qualified	16384 bit		NOT SPECIFIED	NOT SPECIFIED
TMS27PC400-15NL4	Texas Instruments	OTP ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	50 mA	524288 words	COMMON	5	5	8	IN-LINE	DIP32,.6	16	OTP ROMs	2.54 mm	70 Cel		3-STATE	512KX8	512K	DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	4194304 bit	4.5 V	NOT SPECIFIED	NOT SPECIFIED	.0001 Amp	52.455 mm	150 ns
TBP28S45NP1	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				512 words		5	5	8	IN-LINE	DIP24,.3		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-PDIP-T24				Not Qualified	4096 bit						60 ns
TBP18SA22N3	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				256 words		5	5	8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			256X8	256	DUAL	R-PDIP-T20					2048 bit						70 ns
TBP34SA162J	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE				4096 words				4	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			4KX4	4K	DUAL	R-XDIP-T20				Not Qualified	16384 bit		NOT SPECIFIED	NOT SPECIFIED
TMS27PC040-8FML	Texas Instruments	OTP ROM	COMMERCIAL	32	QCCJ	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS		J BEND	PARALLEL	ASYNCHRONOUS	50 mA	524288 words	COMMON	5	5	8	CHIP CARRIER	LDCC32,.5X.6		OTP ROMs	1.27 mm	70 Cel		3-STATE	512KX8	512K	QUAD	R-PQCC-J32	5.25 V	3.56 mm	11.43 mm	Not Qualified	4194304 bit	4.75 V	NOT SPECIFIED	NOT SPECIFIED	.0001 Amp	13.97 mm	80 ns
TBP28S42NP3	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				512 words		5	5	8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-PDIP-T20					4096 bit		NOT SPECIFIED	NOT SPECIFIED			60 ns
TMS27PC512NL	Texas Instruments	OTP ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	30 mA	65536 words	COMMON	5	5	8	IN-LINE	DIP28,.6		OTP ROMs	2.54 mm	70 Cel		3-STATE	64KX8	64K	DUAL	R-PDIP-T28	5.25 V	5.08 mm	15.24 mm	Not Qualified	524288 bit	4.75 V	NOT SPECIFIED	NOT SPECIFIED	.00025 Amp	36.32 mm	250 ns
TMX27PC128-2NL	Texas Instruments	OTP ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		16384 words		5		8	IN-LINE				2.54 mm	70 Cel		3-STATE	16KX8	16K	DUAL	R-PDIP-T28		5.08 mm	15.24 mm	Not Qualified	131072 bit					36.32 mm	200 ns
TMS27PC256-120FML	Texas Instruments	OTP ROM	COMMERCIAL	32	QCCJ	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS		J BEND	PARALLEL	ASYNCHRONOUS	30 mA	32768 words	COMMON	5	5	8	CHIP CARRIER	LDCC32,.5X.6		OTP ROMs	1.27 mm	70 Cel		3-STATE	32KX8	32K	QUAD	R-PQCC-J32	5.25 V	3.56 mm	11.43 mm	Not Qualified	262144 bit	4.75 V	NOT SPECIFIED	NOT SPECIFIED	.00025 Amp	13.97 mm	120 ns	13
TMS27PC512-100NL	Texas Instruments	OTP ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	30 mA	65536 words	COMMON	5	5	8	IN-LINE	DIP28,.6		OTP ROMs	2.54 mm	70 Cel		3-STATE	64KX8	64K	DUAL	R-PDIP-T28	5.25 V	5.08 mm	15.24 mm	Not Qualified	524288 bit	4.75 V	NOT SPECIFIED	NOT SPECIFIED	.00025 Amp	36.32 mm	100 ns
TMS27PC512-20DUL	Texas Instruments	OTP ROM	COMMERCIAL	32	TSOP1-R	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS		GULL WING	PARALLEL	ASYNCHRONOUS	30 mA	65536 words	COMMON	5	5	8	SMALL OUTLINE, THIN PROFILE	TSSOP32,.8,20		OTP ROMs	.5 mm	70 Cel	YES	3-STATE	64KX8	64K	DUAL	R-PDSO-G32	5.5 V	1.2 mm	8 mm	Not Qualified	524288 bit	4.5 V	NOT SPECIFIED	NOT SPECIFIED	.00025 Amp	18.415 mm	200 ns
TBP24SA81-55NP3	Texas Instruments	OTP ROM	COMMERCIAL	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				2048 words				4	IN-LINE	DIP18,.3		OTP ROMs	2.54 mm	70 Cel			2KX4	2K	DUAL	R-PDIP-T18					8192 bit		NOT SPECIFIED	NOT SPECIFIED			55 ns
TBP28S45J4	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE				512 words		5	5	8	IN-LINE	DIP24,.3		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-XDIP-T24					4096 bit						60 ns
TMS27PC32-150NL4	Texas Instruments		COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			50 mA	4096 words	COMMON	5	5	8	IN-LINE	DIP24,.6		OTP ROMs	2.54 mm	70 Cel		3-STATE	4KX8	4K	DUAL	R-PDIP-T24					32768 bit				.00025 Amp		150 ns
TMX27PC210-25NL	Texas Instruments	OTP ROM	COMMERCIAL	40	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS		65536 words		5		16	IN-LINE				2.54 mm	70 Cel		3-STATE	64KX16	64K	DUAL	R-PDIP-T40	5.5 V	5.08 mm	15.24 mm	Not Qualified	1048576 bit	4.5 V				52.455 mm	250 ns
TMS27PC240-8FML	Texas Instruments	OTP ROM	COMMERCIAL	44	QCCJ	SQUARE	PLASTIC/EPOXY	YES		CMOS		J BEND			50 mA	262144 words	COMMON	5	5	16	CHIP CARRIER	LDCC44,.7SQ		OTP ROMs	1.27 mm	70 Cel		3-STATE	256KX16	256K	QUAD	S-PQCC-J44				Not Qualified	4194304 bit				.0001 Amp		80 ns
TBP38SA165NT	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR		NO		TTL		THROUGH-HOLE				2048 words				8	IN-LINE	DIP24,.3		OTP ROMs	2.54 mm	70 Cel			2KX8	2K	DUAL	R-XDIP-T24				Not Qualified	16384 bit		NOT SPECIFIED	NOT SPECIFIED
TBP18S46N3	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE			155 mA	512 words		5	5	8	IN-LINE	DIP24,.6		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-PDIP-T24					4096 bit						75 ns
TBP18SA42NP3	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				512 words				8	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			512X8	512	DUAL	R-PDIP-T20					4096 bit						75 ns
TMS27PC291-45FNL	Texas Instruments	OTP ROM	COMMERCIAL	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	CMOS		J BEND	PARALLEL	ASYNCHRONOUS	35 mA	2048 words	COMMON	5	5	8	CHIP CARRIER	LDCC28,.5SQ		OTP ROMs	1.27 mm	70 Cel		3-STATE	2KX8	2K	QUAD	S-PQCC-J28	5.5 V	4.57 mm	11.5062 mm	Not Qualified	16384 bit	4.5 V	NOT SPECIFIED	NOT SPECIFIED	.035 Amp	11.5062 mm	45 ns	13.5
TBP38SA165JT	Texas Instruments	OTP ROM	COMMERCIAL	24	DIP	RECTANGULAR	CERAMIC	NO		TTL		THROUGH-HOLE				2048 words				8	IN-LINE	DIP24,.3		OTP ROMs	2.54 mm	70 Cel			2KX8	2K	DUAL	R-XDIP-T24				Not Qualified	16384 bit		NOT SPECIFIED	NOT SPECIFIED
TBP34R16XCNT	Texas Instruments	OTP ROM	COMMERCIAL	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		TTL		THROUGH-HOLE				4096 words		5	5	4	IN-LINE	DIP20,.3		OTP ROMs	2.54 mm	70 Cel			4KX4	4K	DUAL	R-PDIP-T20				Not Qualified	16384 bit		NOT SPECIFIED	NOT SPECIFIED
TMS27PC512-10NL4	Texas Instruments	OTP ROM	COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	CMOS		THROUGH-HOLE	PARALLEL	ASYNCHRONOUS	30 mA	65536 words	COMMON	5	5	8	IN-LINE	DIP28,.6		OTP ROMs	2.54 mm	70 Cel		3-STATE	64KX8	64K	DUAL	R-PDIP-T28	5.5 V	5.08 mm	15.24 mm	Not Qualified	524288 bit	4.5 V	NOT SPECIFIED	NOT SPECIFIED	.00025 Amp	36.32 mm	100 ns
TMX27PC512-45NL	Texas Instruments		COMMERCIAL	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO		CMOS		THROUGH-HOLE			30 mA	65536 words	COMMON	5	5	8	IN-LINE	DIP28,.6		OTP ROMs	2.54 mm	70 Cel		3-STATE	64KX8	64K	DUAL	R-PDIP-T28				Not Qualified	524288 bit						450 ns

OTP ROM

OTP ROM, or One-Time Programmable Read-Only Memory, is a type of non-volatile computer memory that is programmed once and cannot be reprogrammed. OTP ROM is used to store data that needs to be permanently stored and cannot be changed or updated in the future.

OTP ROM is created using a process similar to that used to manufacture Mask ROM. However, instead of programming the memory during the manufacturing process, OTP ROM is programmed after the manufacturing process, but before it is delivered to the customer. This allows the customer to program the memory with the data that they need to store permanently.

OTP ROM is commonly used in devices such as microcontrollers, smart cards, and other electronic devices that require permanent storage of data. It is ideal for storing critical data, such as system settings, encryption keys, and other sensitive information that needs to be permanently stored and cannot be changed or updated in the future.