National Semiconductor OTP ROM 3
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
National Semiconductor |
OTP ROM |
COMMERCIAL |
20 |
DIP |
RECTANGULAR |
PLASTIC/EPOXY |
NO |
1 |
BIPOLAR |
THROUGH-HOLE |
PARALLEL |
ASYNCHRONOUS |
256 words |
5 |
5 |
8 |
IN-LINE |
DIP20,.3 |
OTP ROMs |
2.54 mm |
70 Cel |
3-STATE |
256X8 |
256 |
0 Cel |
Tin/Lead (Sn/Pb) |
DUAL |
R-PDIP-T20 |
5.25 V |
5.08 mm |
7.62 mm |
Not Qualified |
2048 bit |
4.75 V |
e0 |
26.075 mm |
60 ns |
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|
National Semiconductor |
OTP ROM |
COMMERCIAL |
16 |
DIP |
RECTANGULAR |
PLASTIC/EPOXY |
NO |
1 |
BIPOLAR |
THROUGH-HOLE |
PARALLEL |
ASYNCHRONOUS |
110 mA |
32 words |
5 |
5 |
8 |
IN-LINE |
DIP16,.3 |
OTP ROMs |
2.54 mm |
70 Cel |
3-STATE |
32X8 |
32 |
0 Cel |
Tin/Lead (Sn/Pb) |
DUAL |
R-PDIP-T16 |
5.25 V |
5.08 mm |
7.62 mm |
Not Qualified |
256 bit |
4.75 V |
e0 |
21.755 mm |
25 ns |
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|
National Semiconductor |
OTP ROM |
INDUSTRIAL |
44 |
QCCJ |
SQUARE |
PLASTIC/EPOXY |
YES |
1 |
CMOS |
J BEND |
PARALLEL |
ASYNCHRONOUS |
50 mA |
65536 words |
COMMON |
5 |
5 |
16 |
CHIP CARRIER |
LDCC44,.7SQ |
OTP ROMs |
1.27 mm |
85 Cel |
3-STATE |
64KX16 |
64K |
-40 Cel |
Tin/Lead (Sn/Pb) |
QUAD |
S-PQCC-J44 |
5.5 V |
4.57 mm |
16.51 mm |
Not Qualified |
1048576 bit |
4.5 V |
e0 |
.0001 Amp |
16.51 mm |
150 ns |
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.