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Author SHA1 Message Date
Tim 'mithro' Ansell 121ee1bd42 Limited release of the SKY130 IO and periphery cells. 
Release of a subset of the full IO. This release includes;
 * Power pads;
    - High voltage - `top_power_hvc_wpad`, `top_ground_hvc_wpad`
    - Low voltage - `top_power_lvc_wpad`, `top_ground_lvc_wpad`
 * Reference generators - `top_refgen`, `top_refgen_new`.
 * Standard GPIO (`top_gpiov2`).
 * I2C compatible GPIO with over-voltage tolerance (`top_gpio_ovtv2`).
 * Special SIO (`top_sio`) with differential macro (`top_sio_macro`).
 * System wide reset influencing XRES cell (`top_xres4v2`).

Future release will include;
 * Original standard GPIO (`top_gpio`).
 * More power pad versions.
 * More XRES cells.
 * More reference generators (`top_vrefcapv2`, etc).
 * Spice and CDL models for the IOs.

Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>
 2020-11-10 06:00:28 -08:00
Tim 'mithro' Ansell ee4a011b69 Fixing primitive library version names. 
Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>
 2020-10-26 06:27:49 -07:00
Tim 'mithro' Ansell 2895e05bcd Adding submodules for sky130_fd_pr versions. 
Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>
 2020-09-28 12:49:35 -07:00
Tim 'mithro' Ansell 3acbe0b1a3 Add the standard cells as submodules. 
They are being added as submodules from the
https://foss-eda-tools.googlesource.com/ repository due to their large
size. People are encouraged to only initialize and clone the submodules
needed for their designs.

 * [`sky130_fd_sc_hd`](https://github.com/google/skywater-pdk/tree/master/libraries/sky130_fd_sc_hd) -
   "High density" digital standard cells provided by the SkyWater
   foundry.

 * [`sky130_fd_sc_hdll`](https://github.com/google/skywater-pdk/tree/master/libraries/sky130_fd_sc_hdll) -
   "High density, low leakage" digital standard cells provided by the
   SkyWater foundry.

 * [`sky130_fd_sc_hs`](https://github.com/google/skywater-pdk/tree/master/libraries/sky130_fd_sc_hs) -
   "High speed" digital standard cells provided by the SkyWater foundry.

 * [`sky130_fd_sc_ms`](https://github.com/google/skywater-pdk/tree/master/libraries/sky130_fd_sc_ms) -
   "Medium speed" digital standard cells provided by the SkyWater
   foundry.

 * [`sky130_fd_sc_ls`](https://github.com/google/skywater-pdk/tree/master/libraries/sky130_fd_sc_ls) -
   "Low speed" digital standard cells provided by the SkyWater foundry.

Signed-off-by: Tim 'mithro' Ansell <tansell@google.com>
 2020-07-03 20:19:38 -07:00