S1K50000 Epson Electronics America, Inc., S1K50000 Datasheet - Page 74

• Manufacturer Part Number: S1K50000
• Description: Design Guide S1k50000 Series
• Manufacturer: Epson Electronics America, Inc.

STANDARD CELL S1K50000 SERIES
DESIGN GUIDE
Here, calculation is performed assuming that Load B for NODE P is 2 [LU]. It should be noted
that the nonloaded delay time is added to the propagation delay time, and that the rise and fall
of each output must also be taken into conside ration.
KNO2
• Example calculation for paths A
Cell
(1) Path A
(2) Path A
(3) Path A
(4) Path A
t
t
t
t
t
t
t
t
pd
pd
pd
pd
pd
pd
pd
pd
(A
(A
(A
Pin
(A
(A
(A
(A
(A
A1
Input
Table 5-3 Characteristics of Cells (Power-Supply Voltage of 3.3 V)
P : t
B : t
C : t
D : t
Fan-in
P
P
P
P
C
C
D
D
1.0
pd
pd
pd
pd
)
)
)
)
)
)
)
)
= t
= t
= t
= t
pd
pd
pd
pd
= T
= 41 + 15.0
= 131 (ps)
= T
= 42 + 20.9
= 167.4 (ps)
= t
= 131.0 + T
= 131.0 + 32
= 163 (ps)
= t
= 167.4 + T
= 167.4 + 32
= 199.4 (ps)
= t
= 131.0 + T
= 131.0 + 57
= 188.0 (ps)
= t
= 167.4 +T
= 167.4 + 59
= 226.4 (ps)
= t
= 131.0 + T
= 131.0 + 75
= 206.0 (ps)
= t
= 167.4 + T
= 167.4 + 51
= 218.4 (ps)
Pin
(KIN1) + t
(KIN1)
(KIN1) + t
(KIN1) + t
X
pd
pd
pd
pd
pd
pd
0
0
Output
+ K
+ K
(A
(A
(A
(A
(A
(A
Fan-out
B, A
8.9
(Load A + Load B)
(Load A + Load B)
0
pd
0
0
pd
0
pd
0
0
EPSON
(KIN2)
P
P
P
P
P
(KNA2)
(KNO2)
(4+2)
(4+2)
P
Chapter 5: Propagation Delay Time and Timing Design
C, A
) + t
) + t
) + t
) + t
) + t
) + t
From
A1
pd
pd
pd
pd
pd
pd
D (t
(P
(P
(P
(P
(P
(P
pd
To
X
= Typ.)
B
B
C
C
D
D
t
pd
)
)
)
)
)
Edge
)
(Typ.)
T
0
75
51
(ps)
K (ps/LU)
40.6
14.2
69