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Add comments on gds units in tech files.

This commit is contained in:
Matt Guthaus 2019-04-30 10:13:13 -07:00
parent 8b1cd57867
commit e071e53090
2 changed files with 19 additions and 1 deletions
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11
technology/freepdk45/tech/tech.py
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@ -14,7 +14,16 @@ File containing the process technology parameters for FreePDK 45nm.
#GDS file info
GDS = {}
# gds units
# gds units
# From http://www.cnf.cornell.edu/cnf_spie9.html: "The first
#is the size of a database unit in user units. The second is the size
#of a database unit in meters. For example, if your library was
#created with the default units (user unit = 1 m and 1000 database
#units per user unit), then the first number would be 0.001 and the
#second number would be 10-9. Typically, the first number is less than
#1, since you use more than 1 database unit per user unit. To
#calculate the size of a user unit in meters, divide the second number
#by the first."
GDS["unit"] = (0.0005,1e-9)
# default label zoom
GDS["zoom"] = 0.05

9
technology/scn4m_subm/tech/tech.py
View File

@ -15,6 +15,15 @@ File containing the process technology parameters for SCMOS 3me, subm, 180nm.
#GDS file info
GDS={}
# gds units
# From http://www.cnf.cornell.edu/cnf_spie9.html: "The first
#is the size of a database unit in user units. The second is the size
#of a database unit in meters. For example, if your library was
#created with the default units (user unit = 1 m and 1000 database
#units per user unit), then the first number would be 0.001 and the
#second number would be 10-9. Typically, the first number is less than
#1, since you use more than 1 database unit per user unit. To
#calculate the size of a user unit in meters, divide the second number
#by the first."
GDS["unit"]=(0.001,1e-6)
# default label zoom
GDS["zoom"] = 0.5