This is an old revision of the document!
Top metal: http://siliconpr0n.org/map/st/24c02/top_metal__ns50xu/
Stripped: http://siliconpr0n.org/map/st/24c02/stripped__ns50xu/
Other stuff, just browse around http://siliconpr0n.org/map/st/24c02/
Number | High level description | Claimed by | Digitized? | Transistor schematic? | Functional schematic? | Other |
---|---|---|---|---|---|---|
1 | Unknown | |||||
2 | Unknown | |||||
3 | Unknown | |||||
4 | Unknown | |||||
5 | Unknown | |||||
6 | Unknown | |||||
7 | Unknown | |||||
8 | Unknown | |||||
9 | Unknown | |||||
10 | Unknown | |||||
11 | Unknown | |||||
12 | Unknown | |||||
13 | Unknown | |||||
14 | ROM / microcode? | |||||
15 | ROM / microcode? | |||||
16 | Unknown | |||||
17 | clock? | JM | Y | Y | Half | Right half to meaningful high level schematic. Left half to questionable gate level schematic. |
18 | Unknown | |||||
19 | Unknown | |||||
20 | Unknown | |||||
21 | Unknown | |||||
22 | Unknown | |||||
23 | Unknown | |||||
24 | EEPROM | AZ | IP | |||
25 | EEPROM row/col/data? | |||||
26 | EEPROM row/col/data? | |||||
27 | EEPROM row/col/data? | |||||
28 | charge pump caps and switches | JM | Y | Schematic capture | ||
29 | charge pump supply diode? | JM | Y | Schematic capture | ||
30 | charge pump control? | JM | Y | Schematic capture | ||
31 | Unknown | |||||
32 | Unknown | |||||
33 | Unknown | |||||
34 | Unknown | |||||
35 | Unknown | |||||
36 | Unknown | |||||
37 | Unknown | |||||
38 | Unknown | |||||
39 | Unknown |
The entire EEPROM array (shown below) is known to be 2048 bits.
The array consists of a cell (shown below) tiled 16 wide by 8 high, for 128 copies of the cell. Each cell must thus be 16 bits. Each cell consists of four sub-cells, so each sub-cell is 4 bits.