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27256
UV Erasable EPROM 256 KiBit, [Obsolete 2000-11]
Schematic Symbol
Pin Configuration (28 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | VPP | input |
| 2 | A12 | input |
| 3 | A7 | input |
| 4 | A6 | input |
| 5 | A5 | input |
| 6 | A4 | input |
| 7 | A3 | input |
| 8 | A2 | input |
| 9 | A1 | input |
| 10 | A0 | input |
| 11 | D0 | tri_state |
| 12 | D1 | tri_state |
| 13 | D2 | tri_state |
| 14 | GND | power_in |
| 15 | D3 | tri_state |
| 16 | D4 | tri_state |
| 17 | D5 | tri_state |
| 18 | D6 | tri_state |
| 19 | D7 | tri_state |
| 20 | ~{CE} | input |
| 21 | A10 | input |
| 22 | ~{OE} | input |
| 23 | A11 | input |
| 24 | A9 | input |
| 25 | A8 | input |
| 26 | A13 | input |
| 27 | A14 | input |
| 28 | VCC | power_in |
Footprint
ConfirmedPackage_DIP/DIP-28_W15.24mm
Pad Layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pads (28)
| Number | Type |
|---|---|
| 1 | thru hole |
| 2 | thru hole |
| 3 | thru hole |
| 4 | thru hole |
| 5 | thru hole |
| 6 | thru hole |
| 7 | thru hole |
| 8 | thru hole |
| 9 | thru hole |
| 10 | thru hole |
| 11 | thru hole |
| 12 | thru hole |
| 13 | thru hole |
| 14 | thru hole |
| 15 | thru hole |
| 16 | thru hole |
| 17 | thru hole |
| 18 | thru hole |
| 19 | thru hole |
| 20 | thru hole |
| 21 | thru hole |
| 22 | thru hole |
| 23 | thru hole |
| 24 | thru hole |
| 25 | thru hole |
| 26 | thru hole |
| 27 | thru hole |
| 28 | thru hole |