| Background |
| ========== |
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| SKY130 is a mature 180nm-130nm hybrid technology developed by Cypress Semiconductor that has been used for many production parts. SKY130 is now available as a foundry technology through SkyWater Technology Foundry. |
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| The technology is the 8th generation SONOS technology node (130nm). |
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| The technology stack consists of; |
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| - 5 levels of metal (`p` - penta) |
| - Inductor or Inductor-Capable (`i`) |
| - Poly resistor (`r`) |
| - SONOS shrunken cell (`s`) |
| - Supports 10V regulated supply (`10R`) |
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| PDK Version Numbering |
| --------------------- |
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| The PDK version is referred to with a 3-digit number, VX.Y.Z. |
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| * X = Milestone Release. |
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| - 0 indicates “alpha” level. The PDK has not undergone full qualification. Components may be immature and untested. |
| - 1 indicates “beta” level. The PDK has undergone qualification testing but has not been hardware verified. |
| - 2 indicates “production” level. The PDK has passed qualification testing and has been hardware verified. |
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| * Y = Major Scheduled Release |
| * Z = Interim Unscheduled Release (e.g. a patch or hotfix) |
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| Technology Naming Convention and Metal Stacks |
| --------------------------------------------- |
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| `s8phirs_10r` |
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| The next letter refers to the metal stack: |
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| * P = penta = 5 levels of metal |
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| The following letters may occur in technology descriptions: |
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| * H = High-density Standard Cells |
| * I = Inductor or Inductor-Capable |
| * R = poly resistor |
| * S = SONOS shrunken cell |
| * 10R = supports 10V regulated supply |
