bb/tinv.py

   1 # Basic Ternary Inverter, implemented with CD4007
   2 #
   3 # TODO: embed with tinv.asc, netlist generated by
   4
   5 nodes = ("Vin", "PTI_Out", "STI_Out", "NTI_Out")
   6
   7 # Dual MOSFET Complementary Pair + Binary Inverter
   8 parts_generated = ["CD4007"]
   9 parts_consumed = ["MP", "MN"]
  10 parts_kept = ["RP", "RN"]
  11
  12 # Based on pinout from http://www.cedmagic.com/tech-info/data/cd4016.pdf
  13 pins = [
  14         {
  15             # First MOSFET pair has sources already connected to Vdd/Vss
  16             "Vin": ("CD4007", 6),
  17             "PTI_Out": ("CD4007", 13),
  18             "NTI_Out": ("CD4007", 8),
  19             "STI_Out": "STI_Out",
  20         },
  21         {
  22             # Second MOSFET pair, need to connect sources
  23             "Vin": ("CD4007", 3),
  24             "PTI_Out": ("CD4007", 1),
  25             "NTI_Out": ("CD4007", 5),
  26             "STI_Out": "STI_Out",
  27             "$G_Vdd": ("CD4007", 2),
  28             "$G_Vss": ("CD4007", 4),
  29         },
  30        ]
  31
  32 # Always connected once if use once or more
  33 global_pins = {
  34         # Power connections
  35         "$G_Vdd": ("CD4007", 14),
  36         "$G_Vss": ("CD4007", 7),
  37
  38         # TODO: always connect binary inverter, since we'll never be using it,
  39         # but to prevent MOSFETs from switching on and off, wasting power?
  40         # May need a change in this data structure to support multiple connections to $G_Vdd/Vss
  41         }
  42