bb/tnand.py

   1 # Ternary NOR, implemented with CD4007
   2 #
   3
   4 nodes = ("A", "B", "TNAND_Out")
   5
   6 # Dual MOSFET Complementary Pair + Binary Inverter
   7 parts_generated = ["CD4007"]
   8 parts_consumed = ["MP1", "MP2", "MN1", "MN2"]
   9 parts_kept = ["RP", "RN"]
  10
  11 # Based on pinout from http://www.cedmagic.com/tech-info/data/cd4016.pdf
  12 pins = [
  13         {
  14             "A": ("CD4007", 3),
  15             "B": ("CD4007", 6),
  16             "$G_Vdd": [("CD4007", 2), ("CD4007", 14)],
  17             "TNOR_Out": "TNOR_Out",
  18             "$G_Vss": ("CD4007", 7),
  19
  20             # Internal nodes
  21
  22             # Connect these two nodes together
  23             "NI": [("CD4007", 4), ("CD4007", 8)],
  24             # Connects to resistors
  25             "NP": [("CD4007", 1), ("CD4007", 13)],
  26             "NN": ("CD4007", 5),
  27         }
  28        ]
  29
  30 # Always connected once if use once or more
  31 global_pins = {
  32         # TODO: always connect binary inverter, since we'll never be using it,
  33         # but to prevent MOSFETs from switching on and off, wasting power?
  34         # May need a change in this data structure to support multiple connections to $G_Vdd/Vss
  35         }
  36