Vias must be drawn orthogonal to the grid of the layout. Non-Manhattan vias are not allowed.
| Rule | Description | Lambda | |||||
|---|---|---|---|---|---|---|---|
| 4 metal Process | 5+ Metal Process | ||||||
| SCMOS | SUBM | DEEP | SCMOS | SUBM | DEEP | ||
| 21.1 | Exact size | 2x2 | 2x2 | n/a | n/a | 2x2 | 3x3 |
| 21.2 | Minimum spacing | 3 | 3 * | n/a | n/a | 3 | 3 |
| 21.3 | Minimum overlap by Metal3 | 1 | 1 | n/a | n/a | 1 | 1 |
* Exception: Use lambda=4 for rule 21.2 only when using SCN4M_SUBM for Agilent/HP GMOS10QA 0.35 micron process
| Rule | Description | Lambda | |||||
| 4 Metal Process | 5+ Metal Process | ||||||
| SCMOS | SUBM | DEEP | SCMOS | SUBM | DEEP | ||
| 22.1 | METAL4 width | 6 | 6 | n/a | n/a | 3 | 3 |
| 22.2 | METAL4 space | 6 | 6 | n/a | n/a | 3 | 4 |
| 22.3 | METAL4 overlap of VIA3 | 2 | 2 | n/a | n/a | 1 | 1 |
| 22.4 | Minimum spacing when either metal line is wider than 10 lambda | 12 | 12 | n/a | n/a | 6 | 8 |
