(Hong Kong)
Product Summary
The M87C257-12F1 is a high speed 262,144 bit UV erasable and electrically programmable EPROM. The M87C257-12F1 incorporates latches for all address inputs to minimize chip count, reduce cost, and simplify the design of multiplexed bus systems. The Window Ceramic Frit-Seal Dual-in-Line package has a transparent lid which allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure.
Parametrics
M87C257-12F1 absolute maximum ratings: (1)TA Ambient Operating Temperature: –40 to 125℃; (2)TBIAS Temperature Under Bias; –50 to 125℃; (3)TSTG Storage Temperature: –65 to 150 ℃; (4)VIO, Input or Output Voltages (except A9): –2 to 7 V; (5)VCC Supply Voltage: –2 to 7 V; (6)VA9, A9 Voltage: –2 to 13.5 V; (7)VPP Program Supply Voltage: –2 to 14 V.
Features
M87C257-12F1 features: (1)integrated address latch; (2)fast access time: 45ns; (3)low power cmos consumption: Active Current 30mA; Standby Current 100μA; (4)programming voltage: 12.75V; (5)electronic signature for automated programming; (6)programming times of around 3sec. (presto ii algorithm).
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||
|---|---|---|---|---|---|---|---|---|---|---|
 |
 M87C257-12F1 |
STMicroelectronics |
EPROM 256K (32Kx8) 120ns |
Data Sheet |
Negotiable |
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| Image | Part No | Mfg | Description | |
Pricing (USD) |
Quantity | ||||
|
M87C257-12F1 |
STMicroelectronics |
EPROM 256K (32Kx8) 120ns |
Data Sheet |
Negotiable |
|
||||
|
M87C257-90C1 |
STMicroelectronics |
EPROM 256K (32Kx8) 90ns |
Data Sheet |
Negotiable |
|
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 |
M87C51FC |
Other |
|
Data Sheet |
Negotiable |
|
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|
M87C51FB |
Other |
|
Data Sheet |
Negotiable |
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|
M87C51 |
Other |
|
Data Sheet |
Negotiable |
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|
M87C257-90C1TR |
STMicroelectronics |
EPROM 256K (32Kx8) 90ns |
Data Sheet |
Negotiable |
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