Chapter 3 Scan Path Block
NEC Scan D-F/F (CB) with RB, SB
Chapter 3 Scan Path Block
Switching speed
Function
Block
type
Input
Output
Path
→
t LD0 (ns)
t 1
Standard type
Q output
Block type
IN
CB
OUT
MIN.
(LH) 0.453
(LL) 0.418
(LH) 0.593
0.604
0.176
(LH) 0.356
(LH) 0.381
TYP. MAX.
MIN.
0.011
0.010
0.011
0.010
0.010
0.011
0.011
0.010
TYP. MAX. Symbol Fanin Symbol Fanout
Normal
Name cells Name cells
QB output
Name cells Name cells
0.762
0.684
1.002
1.021
0.274
0.720
0.766
0.417
1.513
1.313
2.023
2.011
0.463
1.419
1.506
0.717
1.440
0.260
0.240
0.760
0.920
0.330
2.534
1.823
1.858
0.015
0.013
0.015
0.013
0.013
0.015
0.015
0.013
0.022
0.017
0.022
0.017
0.017
0.022
0.022
0.019
D
1.0
2.5
2.4
2.2
Q
34
32
SE637
→
Q
Drivability
Name cells
Name cells
CB
RB
SB
QB
CB
→
QB
x1
x2
x4
x8
SE637
13
(LL)
(LL)
RB
RB
SB
SB
→
→
→
→
Q
QB
Q
(LL)
0.210
0.650
0.290
0.280
0.450
0.550
0.370
0.994
0.660
0.692
QB
Logic Diagram for "Normal"
Truth Table for "Normal"
Set up time
Hold time
D
D
Release time
Release time
Removal time
Removal time
Min Pulse
RB
SB
RB
SB
CB
RB
SB
SB
D
CB
RB
SB
Q
QB
H04
0
1
1
1
1
0
1
0
1
1
1
1
0
0
0
1
1
0
D
H01
N01 Q
X
X
X
X
Hold
Min Pulse
Min Pulse
X
X
X
0
1
0
1
0
0
CB H02
N02 QB
←
Prohibition
X:Irrelevant
H03
RB
Logic Diagram for "Q output"
Truth Table for "Q output"
Logic Diagram for "QB output"
Truth Table for "QB output"
Block Library A13872EJ5V0BL
3 - 60
Block Library A13872EJ5V0BL
3 - 61
ETC [ ETC ]
