Instancing the 555 Timer Instancing the Capacitors

Instancing the 4-Bit Counter

You know the drill:

device Counter is
   attr refPrefix = "U";
   attr pkg_type = "16-TSSOP";
   pin B = {1};
   pin Qb = {2};
   pin Qa = {3};
   pin Down = {4};
   pin Up = {5};
   pin Qc = {6};
   pin Qd = {7};
   pin gnd = {8};
   pin D = {9};
   pin C = {10};
   pin _Load = {11};
   pin _Co = {12};
   pin _Bo = {13};
   pin clr = {14};
   pin A = {15};
   pin vcc = {16};
end device Counter;

Next comes the device instance:

inst cntr of Counter is
   B = GND;
   Qb = AND_in[2];
   Qa = AND_in[4];
   Down = +5V;
   Up = 555_junct;
   Qc = AND_in[3];
   Qd = +5V;
   gnd = GND;
   D = GND;
   C = GND;
   _Load = CR_junct;
   _Co = open;
   _Bo = open;
   clr = GND;
   A = open;
   vcc = +5V;
end inst cntr;

Hope you're not dizzy yet, because the hardest stuff is coming up soon. Stay tuned for more PHDL action on the same PHDL channel.

Instancing the 555 Timer Instancing the Capacitors