Device Kinds Reference

All device kinds recognized by Schemify's CHN parser and netlist generator.

Electrical Devices

Kind	SPICE Prefix	Description
`nmos`	M	N-channel MOSFET (3 or 4 terminal)
`pmos`	M	P-channel MOSFET (3 or 4 terminal)
`resistor`	R	Resistor
`capacitor`	C	Capacitor
`inductor`	L	Inductor
`npn`	Q	NPN BJT
`pnp`	Q	PNP BJT
`diode`	D	Diode
`vsource`	V	Voltage source
`isource`	I	Current source
`vcvs`	E	Voltage-controlled voltage source
`vccs`	G	Voltage-controlled current source
`ccvs`	H	Current-controlled voltage source
`cccs`	F	Current-controlled current source
`ammeter`	V	Zero-volt source for current measurement
`subckt`	X	Subcircuit instance

Label / Connectivity Devices

Kind	Description
`lab_pin`	Net label (assigns name to a net)
`vdd`	Power supply label
`gnd`	Ground label
`ipin`	Subcircuit input port
`opin`	Subcircuit output port
`iopin`	Subcircuit bidirectional port
`noconn`	No-connect marker

Non-Electrical (filtered from netlist)

Kind	Description
`title`	Title block / annotation
`code`	SPICE code block (`.model`, `.include`, etc.)
`launcher`	UI action launcher
`probe`	Measurement probe

Standard Primitive Library

A standard library of .chn_prim files ships with the toolchain:

chn_prim/nmos
chn_prim/pmos
chn_prim/resistor
chn_prim/capacitor
chn_prim/inductor
chn_prim/diode
chn_prim/npn
chn_prim/pnp
chn_prim/vsource
chn_prim/isource
chn_prim/vcvs
chn_prim/vccs
chn_prim/ccvs
chn_prim/cccs

PDK-specific primitives (e.g., sky130_prim/nfet_01v8) are installed separately and reference PDK .lib files via Volare.

Complete Example

Component (cmos_inv.chn)

chn 1

SYMBOL cmos_inv
  pins:
    Z  out  x=40  y=0
    A  in   x=-40 y=0
  params:
    format   = @name @pinlist @symname WN=@WN WP=@WP LLN=@LLN LLP=@LLP m=@m
    template = name=X1 WN=15u WP=45u LLN=3u LLP=3u m=1
    type     = subcircuit

SCHEMATIC
  instances:
    p2  opin  x=370 y=-230  sym=opin  name=p2
    p1  ipin  x=60  y=-230  sym=ipin  name=p1
    l1  vdd   x=140 y=-400  sym=vdd   name=l1
    M2  pmos  x=120 y=-350  sym=pmos4
      .parameters{ name=M2  model=p  w=WP  l=LLP  m=1 }
    M1  nmos  x=120 y=-170  sym=nmos4
      .parameters{ name=M1  model=n  w=WN  l=LLN  m=1 }

  nets:
    A   -> M2.g, M1.g
    VDD -> M2.s, M2.b
    Z   -> M1.d

  wires:
    80 -230 80 -170 A
    140 -400 140 -380 VDD

Primitive (nmos.chn_prim)

chn_prim 1

SYMBOL nmos
  pins:
    d  inout  x=20  y=-30
    g  in     x=-20 y=0
    s  inout  x=20  y=30
  params:
    type     = nmos
    format   = @spiceprefix@name @pinlist @model @extra m=@m
    template = name=M1 model=M2N7002 device=2N7002 m=1