def cell(diameter=diameter):
"""Create a DCpad cell.
Args:
diameter (float): diameter of circular debt
Returns:
Cell
"""
with nd.Cell(hashme=True) as C:
C.groupname = groupname
pdk.addBBmap(name)
bb_width = diameter + 2*buf_width
bb_length = diameter + 2*buf_length
C.default_pins('c0', 'c0')
nd.Pin(name='c0', xs=xs['c0'], width=pinwidth['c0'], remark='electrical').\
put(0.5*bb_length, 0, 180)
pdk.put_stub('c0', length=pinwidth['c0'], shape='circle')
pdk.put_boundingbox('org', bb_length, bb_width)
for lay, grow, acc in nd.layeriter(xs['c0']):
pad = nd.geom.circle(radius=0.5*diameter, N=100)
nd.Polygon(layer=lay, points=pad).\
put('cc')
return C
def cell(length=length, angle=angle):
anglerad = radians(angle)
"""Create a trapezoidal IO cell.
Returns:
Cell
"""
with nd.Cell(hashme=True, instantiate=False) as C:
#When instantiate is True, cell put in (0,0,0)
nd.Pin(name='a0', xs=xs['a0'], width=pinwidth['a0']).put(0, 0, 180)
nd.Pin(name='b0', xs=xs['b0'], width=pinwidth['b0']).\
put(length/cos(anglerad)-0.5*width*tan(abs(anglerad)))
pdk.put_stub(['b0'])
pdk.cellname(length=0.5 * length).put(-0.1 * length, 0, 180, 'a0')
for lay, grow, acc in nd.layeriter(xs['a0']):
outline = nd.geom.trapezoid(length=length / cos(anglerad) +
grow * tan(abs(anglerad)),
height=width + 2 * grow,
angle1=90 + angle,
angle2=90,
position=2)
nd.Polygon(layer=lay, points=outline).put(0)
cfg.cp = C.pin['b0']
C.groupname = groupname
return C
def cell(length=length, width=width):
"""Create a DCpad_lw cell.
Args:
length (float): length of the pad in um
width (float): width of the pad in um
Returns:
Cell: dcpad element
"""
with nd.Cell(hashme=True) as C:
C.groupname = groupname
C.default_pins('c0','c0')
buf = 10
bb_width = width + buf
bb_length = length + buf
nd.Pin(name='c0', xs=xs['c0'], width=pinwidth['c0'], remark='electrical').\
put(0.5*bb_length, 0, 180)
pdk.put_stub('c0', length=pinwidth['c0'], shape='circle')
pdk.put_boundingbox('org', bb_length, bb_width)
for lay, grow, acc in nd.layeriter(xs['c0']):
pad = nd.geom.rounded_rect(
length=length+grow, height=width, position=5)
nd.Polygon(layer=lay, points=pad).\
put(C.pin['c0'])
return C
def cell(length=length, angle=angle):
anglerad = radians(angle)
"""Create a trapezoidal IO cell.
Returns:
Cell
"""
with nd.Cell(hashme=True, instantiate=False) as C:
"""When instantiate is True, cell put in (0, 0, 0)"""
nd.Pin(name='a0', xs=xs['a0'], width=pinwidth['a0']).put(0, 0, 180)
nd.Pin(name='b0', xs=xs['b0'], width=pinwidth['b0']).\
put(0.5*length*(1.0+1.0/cos(anglerad)))
pdk.put_stub(['a0', 'b0'])
pdk.cellname(length=0.5 * length).put(C.pin['a0'].rot(180))
temp_a = tan(anglerad) + 0.5 * width * tan(anglerad)
temp_b = length / cos(anglerad) + length
for lay, grow, acc in nd.layeriter(xs['a0']):
outline = [(0, 0.5 * width + grow),
(0.5 * temp_b - (width + grow) * temp_a,
0.5 * width + grow),
(0.5 * temp_b + grow * temp_a, -0.5 * width - grow),
(0, -0.5 * width - grow)]
nd.Polygon(layer=lay, points=outline).put(0)
cfg.cp = C.pin['b0']
C.groupname = groupname
return C
def cell(length=length, height=height, cleave=cleave, pitch=pitch):
"""Create a cell boundary.
Returns:
Cell
"""
with nd.Cell(hashme=True) as C:
pdk.parameters('hashme').put(0)
#TODO: No foundry specific stuff here: remove.
for lay, grow, acc in nd.layeriter(xs):
frame = geom.frame(sizew=cleave,
sizel=length,
sizeh=height,
grow=grow)
nd.Polygon(layer=lay, points=frame).put(0)
#Placing IOs
amount_ios = round((height - cleave - pitch) / pitch)
#IOs positions
lay = 'AnnotationIO'
for no in range(0, amount_ios):
pinID = 'ioL{:03d}'.format(no)
angle = 0
p = nd.Pin(name=pinID).put(-cleave, pitch + no * pitch, angle)
p = nd.Pin(name='ioL' + str(no)).put(-cleave,
pitch + no * pitch, angle)
pdk.arrow.put(p)
nd.text(pinID, layer=lay, height=0.15,
align='rc').put(p.move(-0.1))
for no in range(0, amount_ios):
mo = amount_ios + no
pinID = 'ioR{:03d}'.format(no)
angle = 0
p = nd.Pin(name=pinID).put(length, pitch + no * pitch,
180 + angle)
p = nd.Pin(name='ioR' + str(no)).put(length,
pitch + no * pitch,
180 + angle)
pdk.arrow.put(p)
nd.text(pinID, layer=lay, height=0.15, align='lc').\
put(p.move(-0.1, 0, 180))
C.groupname = groupname
return C
def cell(length=length, angle=angle):
"""Create a trapezoidal IO cell.
Returns:
Cell
"""
a = radians(angle)
with nd.Cell(hashme=True, instantiate=False) as C:
l = 0.5 * length / cos(a) # half the length of the hypotenuse.
"""When instantiate is True, cell put in (0,0,0)"""
nd.Pin(name='a0', xs=xs['a0'], width=pinwidth['a0']).put(0, 0, 180)
nd.Pin(name='b0', xs=xs['b0'], width=pinwidth['b0']).put(l)
pdk.put_stub(['b0'])
pdk.cellname(C.cell_name, -0.5 * l).put(0, 'a0')
for lay, grow, acc in nd.layeriter(xs['a0']):
w = (width + 2 * grow) / 2
x = w * tan(a)
outline = [(l, w), (-l + x, w), (-l - x, -w), (l, -w)]
nd.Polygon(layer=lay, points=outline).put(0)
cfg.cp = C.pin['b0']
C.groupname = groupname
return C
def cell(cleave=cleave,
length=length,
height=height,
coatingW=coatingW,
coatingE=coatingE):
"""Create a Cell_Boundary cell.
Returns:
Cell
"""
with nd.Cell(hashme=True) as C:
pdk.put_boundingbox('org', length, height, outline=False, \
move=(-0.5*cleave, 0.5*height-0.5*cleave))
pdk.parameters('hashme').put(0, 'cc')
#TODO: No foundry specific stuff here: remove.
outline = [(0, 0), (length - cleave, 0),
(length - cleave, height - cleave),
(0, height - cleave)]
nd.Polygon(layer='Polyimide1Base', points=outline).put(0)
for lay, grow, acc in nd.layeriter(xs):
frame = geom.frame(sizew=cleave,
sizel=length,
sizeh=height,
grow=grow)
nd.Polygon(layer=lay, points=frame).put(0)
##adding coating to nd.Cell boundary: west and east
options = {
'AR': 'Coating_AR',
'HR': 'Coating_HR',
'NO': 'Coating_NO',
'DC': 'Coating_DC'
}
coating_on_chip = nd.get_parameter('cell_coating_on_chip')
box_coatno = [(0, 0), (cleave / 2, 0), (cleave / 2, height),
(0, height)]
box_coatother = [(0, 0), (coating_on_chip + 0.5 * cleave, 0),
(coating_on_chip + 0.5 * cleave, height),
(0, height)]
pinW = nd.Pin().put(-0.5 * cleave, -0.5 * cleave)
pinE = nd.Pin().put(length - 0.5 * cleave, height - 0.5 * cleave,
180)
coatings = {'E': (coatingE, pinE), 'W': (coatingW, pinW)}
for coat, pin in coatings.values():
if coat in options.keys():
layer = options[coat]
else:
print(
'Available coating options: AR | HR | NO | DC. Default is NO.'
)
if coat is 'NO':
box = box_coatno
else:
box = box_coatother
nd.Polygon(layer=layer, points=box).put(pin)
#Placing IOs
pitch = 12.5
amount_ios = round((height - cleave - pitch) / pitch)
#IOs positions
lay = 'bb_pin'
for no in range(0, amount_ios):
pinID = 'io{:03d}'.format(no)
if no % 2 is 0:
angle = 7
else:
angle = 0
p = nd.Pin(name=pinID).put(-cleave / 2, 12.5 + no * pitch,
angle)
p = nd.Pin(name='io' + str(no)).put(-cleave / 2,
12.5 + no * pitch, angle)
pdk.make_pincell().put(p)
nd.text(pinID, layer=lay, height=0.15,
align='rc').put(p.move(-0.1))
for no in range(0, amount_ios):
mo = amount_ios + no
pinID = 'io{:03d}'.format(mo)
if mo % 2 is 0:
angle = 7
else:
angle = 0
p = nd.Pin(name=pinID).put(length - cleave / 2,
2 * 12.5 + no * pitch, 180 + angle)
pdk.make_pincell().put(p)
nd.text(pinID, layer=lay, height=0.15, align='lc').\
put(p.move(-0.1, 0, 180))
C.groupname = groupname
return C
def _makestub(xs_guide=None,
width=0,
length=2.0,
shape=None,
pinshape=None,
pinsize=None,
pinlayer=None,
cell=None):
"""Create a stub in the logical layers.
A stub is the stub of a xsection shape around a pin to visualize a connection.
A pincell is added to the stub to indicate the pin position inside the stub.
The new stub is added to the stubs dictionary: {name: stubcell}
Args:
xs_guide (str): name of xsection
width (float): stub width
thick (float): thickness of stub into cell (length)
shape (str): shape of the stub: 'box' | 'circ' (default = 'box')
pinshape (string): pinshape used in the stub
pinsize (float): scaling factor of the pinshape (default = 1)
cell (Cell): use the provided cell as stub instead of creating a new stub cell
Returns:
str: name of the stub
"""
try:
xs_logic = cfg.stubmap[xs_guide]
except:
# if no stub defined, use the xs as its own stub.
if xs_guide is None:
arrow = make_pincell(layer=pinlayer, shape=pinshape, size=pinsize)
return arrow
if xs_guide not in cfg.XSdict.keys():
if xs_guide not in missing_xs:
missing_xs.append(xs_guide)
if xs_guide != cfg.default_xs_name:
print("Can not make a stub in undefined xsection '{0}'.\n"\
" Possible causes: '{0}' is misspelled or not yet defined.\n"\
" Will use xsection '{2}' instead and continue.\n"
" To define a new xsection:\n"\
" add_xsection(name='{0}')\n"\
" or with layers info and adding a custom stub:\n"\
" add_xsection(name='{0}', layer=1)\n"\
" add_xsection(name='{1}', layer=2)\n"\
" add_stub(xsection='{0}', stub='{1}')".\
format(xs_guide, 'stubname', cfg.default_xs_name))
xs_guide = cfg.default_xs_name
cfg.stubmap[xs_guide] = xs_guide
xs_logic = xs_guide
name = stubname(xs_guide, width, length, shape, pinshape, pinsize,
pinlayer)
if name in stubs.keys():
return name
# make a new stub:
stubshapes = ['box', 'circle']
arrow = make_pincell(layer=pinlayer, shape=pinshape, size=pinsize)
if width is None:
width = 0
with nd.Cell(name, instantiate=cfg.stub_instantiate,
store_pins=False) as C:
arrow.put(0)
if cell is not None:
cell.put()
else:
for lay, growx, acc in nd.layeriter(xs_logic):
if shape is 'circle':
outline = geom.circle(radius=0.5 * length, N=32)
else:
outline = geom.box(width=width + 2 * growx, length=length)
if width != 0:
nd.Polygon(layer=lay, points=outline).put(0, 0, 180)
if shape not in stubshapes:
print(
"Warning: stub shape '{}' not recognized, possible options are {}."
.format(shape, stubshapes))
stubs[name] = C
return name #name can have change to default_xs