Differences

This shows you the differences between two versions of the page.

--- config:netlist [2022/05/19 12:00]
rajit
+++ config:netlist [2022/07/10 15:03]
rajit
@@ Line 92: / Line 92: @@
 </code>
 If specified, this parameter is used to increase the length of minimum length transistors in the technology when the sizing directives or production rule body turn on this feature. This is used to reduce leakage in certain technologies where the minimum length devices are extremely leaky, and need to be drawn longer in some cases.
+<code>
+real default_load_cap 0
+</code>
+This value (in fF) is added to a node whenever it appears on the RHS of a production rule (per subcircuit). This can be used to "pessimize" your spice simulations to account for wiring capacitance. This can be overridden with the "loadcap=value" attribute in the production rule itself.
+<code>
+real unit_cap 1e-15
+</code>
+This value is used to specify the size of the unit capacitor used for explicit capacitors specified in the ''prs'' sublanguage. If unspecified, it is taken to be 1fF.
 <code>
@@ Line 158: / Line 169: @@
 </code>
 The first line maps the extract file device types to nfet or pfet (for n-type and p-type transistors). The order of this table should match the numbering of the transistors used by the ''magic'' extractor. Finally, the device names are translated into the appropriate abstract ACT device name using the ''ext_map'' table. The actual SPICE device names are generated using the defined mapping between ACT device names and  [[config:netlist#Transistor device names|technology-dependent transistor device names]].
 ===== Miscellaneous =====
-<code>
-real default_load_cap 0
-</code>
-This value (in fF) is added to a node whenever it appears on the RHS of a production rule (per subcircuit). This can be used to "pessimize" your spice simulations to account for wiring capacitance. This can be overridden with the "loadcap=value" attribute in the production rule itself.
 <code>