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27C64 64K (8kb x 8) 120ns CMOS EPROM Datasheet
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Product Details
Standard 27C64 64kB EPROM IC, as produced
by National Semiconductor, STMicroelectonics and AMD.
Commonly used in vehicle management systems and
microprocessor systems. This IC includes a UV erasable
window for erasing the memory and re-programming the EPROM.
The production of these parts have been discontinued for
a number of years and only limited stocks are available.
Features
- Standard 27C64 EPROM Memory IC with UV Erasable Window
- Reconditioned Unit, Erased and Ready to Program
- Access Time 120ns
- Limited Stock Available - End of Life Product
Pin Layout

Pin Description
Pin Number | Description |
---|---|
1 | Vpp - Programming Supply |
2 | A12 - Address Input |
3 | A7 - Address Input |
4 | A6 - Address Input |
5 | A5 - Address Input |
6 | A4 - Address Input |
7 | A3 - Address Input |
8 | A2 - Address Input |
9 | A1 - Address Input |
10 | A0 - Address Input |
11 | Q0 - Data Input |
12 | Q1 - Data Input |
13 | Q2 - Data Input |
14 | Vss - Ground |
15 | Q3 - Data Input |
16 | Q4 - Data Input |
17 | Q5 - Data Input |
18 | Q6 - Data Input |
19 | Q7 - Data Input |
20 | E - Chip Enable |
21 | A10 - Address Input |
22 | G - Output Enable |
23 | A11 - Address Input |
24 | A9 - Address Input |
25 | A8 - Address Input |
26 | NC - Not Connected |
27 | P - Program Pin |
28 | Vcc - Positive Power Supply |
Dimensional Drawing


Technical Data