NCL Flow Detailed Example – Step 7
20/4/2014
CE-653 - Indicating Logic
30
}Final NCL circuit
}Image gates (Set phase) are replaced by sequential NCL
standard-cells with reset pull-ups
}
b.f
a.t
b.t
s.f
a.f
s.t
thXOR
z.t
z.f
th33w2
th33w2
thXOR
2
2
thXOR
2
2
th22
th22
th24w2
th24w2
f
e
m
n
e
f
m
n
k
Semi-static CMOS
implementation of thXOR.
44 transistors - 30% better than optimized DIMS
u
In RHS two optimisation present: (a) first possibility is having one of the two C-elements merge with the OR gate, (b) merge two C elements AND OR into the thXOR gate