SKY130 on vFactory: an open inverter cell, layer by layer
Explore an open SKY130 inverter cell in this vFactory 3D scene, from its layout to its 3D layer stack. The scene shows 7 drawing layers as 33 boxes at SKY130 kit heights, with a timeline that reveals one layer per second.
This vFactory scene follows sky130_fd_sc_hd__inv_1, an open SKY130 inverter cell. Its output Y is the logical complement of input A. Compare its layout with a 3D layer stack built from the unchanged public GDS file. [2]
Explore the cell
SKY130 inverter cell sky130_fd_sc_hd__inv_1, layer by layer1
Result replay Plays back recorded results exactly as they were recorded. Nothing is recalculated.
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Layers
Labels
- Y
- A
- VPB
- VGND
- VPWR
- NMOS
- PMOS
From the public cell to the scene
Digital Design Studio's GDS reader supplies the shapes, drawn here as 33 boxes across 7 drawing layers. The table gives their display heights from the SKY130 kit, in µm. licon1 represents a contact envelope; poly and licon1 share a starting height. [3]
Layer | Display bottom–top (µm) |
|---|---|
nwell | 0–0.2062 |
diff | 0.2062–0.3262 |
poly | 0.3262–0.5062 |
licon1 | 0.3262–0.9362 |
li1 | 0.9361–1.0361 |
mcon | 1.0361–1.3761 |
met1 | 1.3761–1.7361 |
Explore with the viewer controls
Choose Iso for an angled overview, Top view for the layout, or Front (layer stack) to compare heights.
Select a layer chip to show or hide it and read its details. Move Explode to lift met1 away from the stack.
Use Zoom in and Zoom out to change scale. Reset view restores the fitted, assembled, fully revealed scene. Full screen expands the viewer; exit to return.
Use Play and Pause, or drag the Timeline bar to a moment. Previous layer and Next layer step between reveal boundaries. Each second reveals another drawing layer in this explanatory sequence.
Playback speed offers 0.5×, 1× and 2×. Choose a slower speed to inspect the reveal or a faster one to review it.
Connect the cell to your design work
For DDS users, the GDS guide explains choosing structures, toggling layer/datatype pairs and reading file details. [4]
For vFactory users, the product guide follows a Cloud GDS handoff into Design to wafer, where you can inspect a wafer map and run a reference-fab route. [5]
Related links
Sources
- Source
- Unchanged public SKY130 cell sky130_fd_sc_hd__inv_1 (skywater-pdk-libs-sky130_fd_sc_hd @ 9cb2d7cb), replayed with DDS's GDS reader: 7 drawing layers as 33 boxes at SKY130 kit heights; 10 marker layers left out; 5 pins from 8 text labels. Timeline: one layer per second, not process time. Units: µm.
- License
- Apache-2.0
- Attribution
- sky130_fd_sc_hd__inv_1: Copyright 2020 The SkyWater PDK Authors, Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0). Layer heights: fossi-foundation/open-pdks @ aa3fc215a80d, Apache License 2.0. Changed by Altifigence: GDS shapes drawn as 3D boxes.