NXP Semiconductors OTP ROM 338

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Part RoHS Manufacturer Memory IC Type Temperature Grade No. of Terminals Package Code Package Shape Total Dose (V) Package Body Material Surface Mount No. of Functions Technology Screening Level Nominal Negative Supply Voltage 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 Minimum Data Retention Time Terminal Pitch Maximum Operating Temperature Reverse Pinout Output Characteristics Organization No. of Words Code Minimum Operating Temperature Terminal Finish Terminal Position No. of Ports Write Protection JESD-30 Code Moisture Sensitivity Level (MSL) Maximum Supply Voltage (Vsup) Maximum Seated Height Endurance Maximum Clock Frequency (fCLK) Width Qualification Memory Density Minimum Supply Voltage (Vsup) Additional Features JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Maximum Standby Current Length Maximum Access Time Programming Voltage (V)

82S123/BEA

NXP Semiconductors

OTP ROM

MILITARY

16

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

32 words

5

8

IN-LINE

2.54 mm

125 Cel

3-STATE

32X8

32

-55 Cel

DUAL

R-GDIP-T16

5.5 V

5.08 mm

7.62 mm

Not Qualified

256 bit

4.5 V

19.535 mm

50 ns

M38510/20402BEA

NXP Semiconductors

OTP ROM

MILITARY

16

DIP

RECTANGULAR

UNSPECIFIED

NO

1

BIPOLAR

MIL-M-38510 Class B

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

512 words

5

4

IN-LINE

125 Cel

512X4

512

-55 Cel

DUAL

R-XDIP-T16

5.5 V

Not Qualified

2048 bit

4.5 V

85 ns

82S181A/BKA

NXP Semiconductors

OTP ROM

MILITARY

24

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

1024 words

5

8

FLATPACK

1.27 mm

125 Cel

3-STATE

1KX8

1K

-55 Cel

DUAL

R-CDFP-F24

5.5 V

2.286 mm

9.144 mm

Not Qualified

8192 bit

4.5 V

55 ns

27C512-20D

NXP Semiconductors

OTP ROM

COMMERCIAL

28

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

GULL WING

PARALLEL

ASYNCHRONOUS

65536 words

5

8

SMALL OUTLINE

70 Cel

64KX8

64K

0 Cel

DUAL

R-PDSO-G28

5.5 V

524288 bit

4.5 V

200 ns

82S130A/BFA

NXP Semiconductors

OTP ROM

MILITARY

16

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

512 words

5

4

FLATPACK

1.27 mm

125 Cel

OPEN-COLLECTOR

512X4

512

-55 Cel

DUAL

R-CDFP-F16

5.5 V

2.159 mm

6.731 mm

Not Qualified

2048 bit

4.5 V

35 ns

82S185B/BVA

NXP Semiconductors

OTP ROM

MILITARY

18

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

2048 words

5

4

IN-LINE

2.54 mm

125 Cel

3-STATE

2KX4

2K

-55 Cel

TIN/NICKEL PALLADIUM GOLD

DUAL

R-GDIP-T18

5.5 V

5.08 mm

7.62 mm

Not Qualified

8192 bit

4.5 V

e3/e4

90 ns

27C512-17A

NXP Semiconductors

OTP ROM

COMMERCIAL

32

QCCJ

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

J BEND

PARALLEL

ASYNCHRONOUS

65536 words

5

8

CHIP CARRIER

70 Cel

64KX8

64K

0 Cel

QUAD

R-PQCC-J32

5.5 V

524288 bit

4.5 V

170 ns

N82S115N

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

24

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

512 words

5

8

IN-LINE

75 Cel

512X8

512

0 Cel

DUAL

R-PDIP-T24

5.25 V

Not Qualified

4096 bit

4.75 V

60 ns

82S123B/BFA

NXP Semiconductors

OTP ROM

MILITARY

16

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

32 words

5

8

FLATPACK

1.27 mm

125 Cel

3-STATE

32X8

32

-55 Cel

DUAL

R-CDFP-F16

5.5 V

2.159 mm

6.731 mm

Not Qualified

256 bit

4.5 V

30 ns

82HS641A/B3A

NXP Semiconductors

OTP ROM

MILITARY

28

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

NO LEAD

PARALLEL

ASYNCHRONOUS

8192 words

5

8

CHIP CARRIER

1.27 mm

125 Cel

3-STATE

8KX8

8K

-55 Cel

QUAD

S-CQCC-N28

5.5 V

1.905 mm

11.43 mm

Not Qualified

65536 bit

4.5 V

11.43 mm

55 ns

82S123A/BEA

NXP Semiconductors

OTP ROM

MILITARY

16

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

32 words

5

8

IN-LINE

2.54 mm

125 Cel

3-STATE

32X8

32

-55 Cel

DUAL

R-GDIP-T16

5.5 V

5.08 mm

7.62 mm

Not Qualified

256 bit

4.5 V

19.535 mm

35 ns

N82S181AN

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

24

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

1024 words

5

8

IN-LINE

75 Cel

1KX8

1K

0 Cel

DUAL

R-PDIP-T24

5.25 V

Not Qualified

8192 bit

4.75 V

55 ns

N82S181N

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

24

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

1024 words

5

8

IN-LINE

75 Cel

1KX8

1K

0 Cel

DUAL

R-PDIP-T24

5.25 V

Not Qualified

8192 bit

4.75 V

70 ns

82S141/BKA

NXP Semiconductors

OTP ROM

MILITARY

24

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

512 words

5

8

FLATPACK

1.27 mm

125 Cel

3-STATE

512X8

512

-55 Cel

DUAL

R-CDFP-F24

5.5 V

2.286 mm

9.144 mm

Not Qualified

4096 bit

4.5 V

90 ns

N82S147AN

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

512 words

5

8

IN-LINE

75 Cel

512X8

512

0 Cel

DUAL

R-PDIP-T20

5.25 V

Not Qualified

4096 bit

4.75 V

45 ns

N82HS321BN

NXP Semiconductors

OTP ROM

24

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

4096 words

5

8

IN-LINE

4KX8

4K

DUAL

R-PDIP-T24

5.25 V

Not Qualified

32768 bit

4.75 V

30 ns

82S131A/BFA

NXP Semiconductors

OTP ROM

MILITARY

16

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

512 words

5

4

FLATPACK

1.27 mm

125 Cel

3-STATE

512X4

512

-55 Cel

DUAL

R-CDFP-F16

5.5 V

2.159 mm

6.731 mm

Not Qualified

2048 bit

4.5 V

35 ns

82008023X

NXP Semiconductors

OTP ROM

MILITARY

28

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

NO LEAD

PARALLEL

ASYNCHRONOUS

4096 words

5

8

CHIP CARRIER

125 Cel

4KX8

4K

-55 Cel

QUAD

S-CQCC-N28

5.5 V

Not Qualified

32768 bit

4.5 V

55 ns

N82LHS191A

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

28

QCCN

SQUARE

PLASTIC/EPOXY

YES

1

BIPOLAR

NO LEAD

PARALLEL

ASYNCHRONOUS

2048 words

5

8

CHIP CARRIER

75 Cel

2KX8

2K

0 Cel

QUAD

S-PQCC-N28

5.25 V

Not Qualified

16384 bit

4.75 V

35 ns

82009023A

NXP Semiconductors

OTP ROM

MILITARY

28

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

MIL-STD-883

NO LEAD

PARALLEL

ASYNCHRONOUS

8192 words

5

8

CHIP CARRIER

125 Cel

8KX8

8K

-55 Cel

QUAD

S-CQCC-N28

5.5 V

Not Qualified

65536 bit

4.5 V

55 ns

82S131/BEA

NXP Semiconductors

OTP ROM

MILITARY

16

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

512 words

5

4

IN-LINE

2.54 mm

125 Cel

3-STATE

512X4

512

-55 Cel

DUAL

R-GDIP-T16

5.5 V

5.08 mm

7.62 mm

Not Qualified

2048 bit

4.5 V

19.535 mm

60 ns

10149F

NXP Semiconductors

OTP ROM

OTHER

16

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

ECL

-5.2 V

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

160 mA

256 words

-5.2

4

IN-LINE

DIP16,.3

OTP ROMs

2.54 mm

85 Cel

OPEN-EMITTER

256X4

256

-30 Cel

TIN LEAD

DUAL

R-GDIP-T16

Not Qualified

1024 bit

e0

20 ns

N82S147AA

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

20

QCCN

SQUARE

PLASTIC/EPOXY

YES

1

BIPOLAR

NO LEAD

PARALLEL

ASYNCHRONOUS

512 words

5

8

CHIP CARRIER

75 Cel

512X8

512

0 Cel

QUAD

S-PQCC-N20

5.25 V

Not Qualified

4096 bit

4.75 V

45 ns

N82S23A

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

20

QCCN

SQUARE

PLASTIC/EPOXY

YES

1

BIPOLAR

NO LEAD

PARALLEL

ASYNCHRONOUS

32 words

5

8

CHIP CARRIER

75 Cel

32X8

32

0 Cel

QUAD

S-PQCC-N20

5.25 V

Not Qualified

256 bit

4.75 V

50 ns

82S23/BFA

NXP Semiconductors

OTP ROM

MILITARY

16

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

32 words

5

8

FLATPACK

1.27 mm

125 Cel

OPEN-COLLECTOR

32X8

32

-55 Cel

DUAL

R-CDFP-F16

5.5 V

2.159 mm

6.731 mm

Not Qualified

256 bit

4.5 V

50 ns

N82S147N

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

20

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

512 words

5

8

IN-LINE

75 Cel

512X8

512

0 Cel

DUAL

R-PDIP-T20

5.25 V

Not Qualified

4096 bit

4.75 V

60 ns

82S137A/BVA

NXP Semiconductors

OTP ROM

MILITARY

18

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

1024 words

5

4

IN-LINE

2.54 mm

125 Cel

3-STATE

1KX4

1K

-55 Cel

DUAL

R-GDIP-T18

5.5 V

5.08 mm

7.62 mm

Not Qualified

4096 bit

4.5 V

55 ns

27C512I12FA

NXP Semiconductors

OTP ROM

INDUSTRIAL

28

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

1

CMOS

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

65536 words

5

8

IN-LINE

85 Cel

64KX8

64K

-40 Cel

DUAL

R-CDIP-T28

5.5 V

524288 bit

4.5 V

120 ns

82S191A/BLA

NXP Semiconductors

OTP ROM

MILITARY

24

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

2048 words

5

8

IN-LINE

2.54 mm

125 Cel

3-STATE

2KX8

2K

-55 Cel

DUAL

R-GDIP-T24

5.5 V

5.08 mm

7.62 mm

Not Qualified

16384 bit

4.5 V

55 ns

82009033A

NXP Semiconductors

OTP ROM

MILITARY

28

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

MIL-STD-883

NO LEAD

PARALLEL

ASYNCHRONOUS

8192 words

5

8

CHIP CARRIER

125 Cel

8KX8

8K

-55 Cel

QUAD

S-CQCC-N28

5.5 V

Not Qualified

65536 bit

4.5 V

45 ns

N82S185N

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

18

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

2048 words

5

4

IN-LINE

75 Cel

2KX4

2K

0 Cel

DUAL

R-PDIP-T18

5.25 V

Not Qualified

8192 bit

4.75 V

100 ns

8200801JA

NXP Semiconductors

OTP ROM

MILITARY

24

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

MIL-STD-883

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

4096 words

5

8

IN-LINE

125 Cel

4KX8

4K

-55 Cel

DUAL

R-GDIP-T24

5.5 V

Not Qualified

32768 bit

4.5 V

95 ns

82008013A

NXP Semiconductors

OTP ROM

MILITARY

28

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

MIL-STD-883

NO LEAD

PARALLEL

ASYNCHRONOUS

4096 words

5

8

CHIP CARRIER

125 Cel

4KX8

4K

-55 Cel

QUAD

S-CQCC-N28

5.5 V

Not Qualified

32768 bit

4.5 V

95 ns

8200804JA

NXP Semiconductors

OTP ROM

MILITARY

24

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

MIL-STD-883

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

4096 words

5

8

IN-LINE

125 Cel

4KX8

4K

-55 Cel

DUAL

R-GDIP-T24

5.5 V

Not Qualified

32768 bit

4.5 V

70 ns

27C512A15N

NXP Semiconductors

OTP ROM

AUTOMOTIVE

28

DIP

RECTANGULAR

PLASTIC/EPOXY

NO

1

CMOS

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

65536 words

5

8

IN-LINE

125 Cel

64KX8

64K

-40 Cel

DUAL

R-PDIP-T28

5.5 V

524288 bit

4.5 V

150 ns

82S181/BKA

NXP Semiconductors

OTP ROM

MILITARY

24

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

1024 words

5

8

FLATPACK

1.27 mm

125 Cel

3-STATE

1KX8

1K

-55 Cel

DUAL

R-CDFP-F24

5.5 V

2.286 mm

9.144 mm

Not Qualified

8192 bit

4.5 V

90 ns

82S137/BVA

NXP Semiconductors

OTP ROM

MILITARY

18

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

1024 words

5

4

IN-LINE

2.54 mm

125 Cel

3-STATE

1KX4

1K

-55 Cel

DUAL

R-GDIP-T18

5.5 V

5.08 mm

7.62 mm

Not Qualified

4096 bit

4.5 V

70 ns

S82S136F

NXP Semiconductors

OTP ROM

MILITARY

18

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

1024 words

5

4

IN-LINE

DIP18,.3

OTP ROMs

2.54 mm

125 Cel

OPEN-COLLECTOR

1KX4

1K

-55 Cel

TIN LEAD

DUAL

R-CDIP-T18

5.5 V

Not Qualified

4096 bit

4.5 V

e0

80 ns

82008013X

NXP Semiconductors

OTP ROM

MILITARY

28

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

MIL-STD-883

NO LEAD

PARALLEL

ASYNCHRONOUS

4096 words

5

8

CHIP CARRIER

125 Cel

4KX8

4K

-55 Cel

QUAD

S-CQCC-N28

5.5 V

32768 bit

4.5 V

95 ns

N82S181A

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

28

QCCN

SQUARE

PLASTIC/EPOXY

YES

1

BIPOLAR

NO LEAD

PARALLEL

ASYNCHRONOUS

1024 words

5

8

CHIP CARRIER

75 Cel

1KX8

1K

0 Cel

QUAD

S-PQCC-N28

5.25 V

Not Qualified

8192 bit

4.75 V

70 ns

27C512I12A

NXP Semiconductors

OTP ROM

INDUSTRIAL

32

QCCJ

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

J BEND

PARALLEL

ASYNCHRONOUS

65536 words

5

8

CHIP CARRIER

85 Cel

64KX8

64K

-40 Cel

QUAD

R-PQCC-J32

5.5 V

524288 bit

4.5 V

120 ns

27C512I12D

NXP Semiconductors

OTP ROM

INDUSTRIAL

28

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

GULL WING

PARALLEL

ASYNCHRONOUS

65536 words

5

8

SMALL OUTLINE

85 Cel

64KX8

64K

-40 Cel

DUAL

R-PDSO-G28

5.5 V

524288 bit

4.5 V

120 ns

82S123/BFA

NXP Semiconductors

OTP ROM

MILITARY

16

DFP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

YES

1

BIPOLAR

FLAT

PARALLEL

ASYNCHRONOUS

32 words

5

8

FLATPACK

1.27 mm

125 Cel

3-STATE

32X8

32

-55 Cel

DUAL

R-CDFP-F16

5.5 V

2.159 mm

6.731 mm

Not Qualified

256 bit

4.5 V

50 ns

27C512A20D

NXP Semiconductors

OTP ROM

AUTOMOTIVE

28

SOP

RECTANGULAR

PLASTIC/EPOXY

YES

1

CMOS

GULL WING

PARALLEL

ASYNCHRONOUS

65536 words

5

8

SMALL OUTLINE

125 Cel

64KX8

64K

-40 Cel

DUAL

R-PDSO-G28

5.5 V

524288 bit

4.5 V

200 ns

8200803JX

NXP Semiconductors

OTP ROM

MILITARY

24

DIP

RECTANGULAR

CERAMIC, GLASS-SEALED

NO

1

BIPOLAR

MIL-STD-883

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

4096 words

5

8

IN-LINE

125 Cel

4KX8

4K

-55 Cel

DUAL

R-GDIP-T24

5.5 V

Not Qualified

32768 bit

4.5 V

45 ns

N82S181A-T

NXP Semiconductors

OTP ROM

COMMERCIAL EXTENDED

28

QCCN

SQUARE

PLASTIC/EPOXY

YES

1

BIPOLAR

NO LEAD

PARALLEL

ASYNCHRONOUS

1024 words

5

8

CHIP CARRIER

75 Cel

1KX8

1K

0 Cel

QUAD

S-PQCC-N28

5.25 V

Not Qualified

8192 bit

4.75 V

70 ns

N82HS321BF

NXP Semiconductors

OTP ROM

24

DIP

RECTANGULAR

CERAMIC, METAL-SEALED COFIRED

NO

1

BIPOLAR

THROUGH-HOLE

PARALLEL

ASYNCHRONOUS

4096 words

5

8

IN-LINE

4KX8

4K

DUAL

R-CDIP-T24

5.25 V

Not Qualified

32768 bit

4.75 V

30 ns

78016013X

NXP Semiconductors

OTP ROM

MILITARY

28

QCCN

SQUARE

CERAMIC, METAL-SEALED COFIRED

YES

1

CMOS

NO LEAD

PARALLEL

ASYNCHRONOUS

512 words

5

8

CHIP CARRIER

125 Cel

512X8

512

-55 Cel

QUAD

S-CQCC-N28

5.5 V

Not Qualified

4096 bit

4.5 V

90 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.