NAME

       addlocap - create a logical capacitor

SYNOPSYS

       #include "mlo.h"

       locap_list ∗addlocap(ptfig,type,capa,tcon,bcon,name)
       lofig_list ∗ptfig ;
       char type ;
       double capa ;
       losig_list ∗tcon, ∗bcon ;
       const char ∗name ;

PARAMETERS

       ptfig               Pointer to the figure in which the capacitor should be added

       type                Capacitor type

       capa                Capacitance value in Farads

       tcon                Pointer to the signal to be connected on the capacitor top plate

       bcon                Pointer to the signal to be connected on the capacitor bottom plate

       name                Capacitor instance name

DESCRIPTION

       addlocap  creates  a  new  capacitor,  and adds it to the list of capacitors pointed to by
       ptfig -> LOCAP. The new capacitor is added in front of the list, and  becomes  itself  the
       list head.
       The type parameter can take two values :

              CAPMIM              for a metal/metal capacitor (the top plate and the bottom plate
                                  layers are different metal layers)

              CAPPNWELL           for a POLY/NWELL capacitor (if available  in  the  technology).
                                  The top plate layer is POLY, bottom plate is NWELL.

       The capa argument is the capacitance value in Farads.
       Two  connectors  are  created each time a capacitor is added, and the tcon and bcon losigs
       are attached to the SIG field of the locon of the appropriate  connector.  The  connectors
       names are tcon  (top plate) and bcon (bottom plate); their direction, DIR, are set to 'P',
       and their TYPE INTERNAL.  For details on the structures, see locon(3) and locap(3).

RETURN VALUE

       addlocap returns a pointer to the newly created capacitor.

ERRORS

       "∗∗∗ mbk error ∗∗∗ illegal capacitor type : type"
              The type is not a legal capacitor type.

EXAMPLE

       #include "mlo.h"

       void parallel_capacitors(void) /∗ netlist of two parallel capacitors ∗/
       {
         lofig_list ∗pt  = NULL ;
         losig_list ∗in  = NULL ;
         losig_list ∗out = NULL ;

         pt = addlofig("parallel_capacitors") ;
         addlocon(pt,"in",in = givelosig(pt,0),IN) ;
         addlocon(pt,"out",out = givelosig(pt,1),OUT) ;

         addlocap(pt,CAPMIM,0.5e-6,in,out,"cap1") ;
         addlocap(pt,CAPMIM,0.5e-6,in,out,"cap2") ;
       }

SEE ALSO

       mbk(1), lofig(3), locap(3), locon(3), dellocap(3).