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.

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") ;
}