Chapter 2 Function Block
JK-F/F (CB) with RB, SB
Chapter 2 Function Block
Switching speed
Function
Block
type
Input
Output
Path
→
t LD0 (ns)
t 1
Standard type
Low Gate type
Block type
IN
CB
OUT
MIN.
(LH) 0.421
(LL) 0.373
(LH) 0.584
0.600
0.177
(LH) 0.391
(LH) 0.377
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
Q output
QB output
Normal
Q output
QB output
0.716
0.609
0.983
1.016
0.273
0.772
0.808
0.458
1.419
1.150
1.962
1.986
0.463
1.520
1.570
0.783
1.460
1.680
0.000
0.110
0.000
0.700
1.180
0.490
2.307
1.830
1.932
1.417
1.151
0.463
1.374
1.460
1.680
0.000
0.110
0.000
0.700
1.190
0.490
1.737
0.752
1.724
1.022
1.051
1.774
0.992
1.440
1.680
0.000
0.120
0.000
0.680
1.090
0.470
1.380
2.074
1.336
0.015
0.013
0.015
0.013
0.013
0.016
0.015
0.013
0.022
0.017
0.022
0.018
0.017
0.023
0.022
0.019
J
K
CB
RB
SB
1.0
1.0
1.0
2.3
2.1
Q
34
31
F787
→
Q
Drivability
Name cells
Name cells
Name cells
Name cells
Name cells
Name cells
QB
CB
→
QB
Low Power
(LL)
(LL)
F787
12
F787NQ
11
F787NB
11
x1
x2
x4
RB
RB
SB
SB
→
→
→
→
Q
QB
Q
(LL)
0.235
0.750
0.740
0.200
0.370
0.180
0.390
0.670
0.430
0.798
0.672
0.732
QB
Logic Diagram for "Normal"
Truth Table for "Normal"
Set up time
Set up time
Hold time
Hold time
Release time
Release time
Removal time
Removal time
Min Pulse
J
K
J
SB
J
K
CB
RB
SB
Q
QB
H05
K
RB
SB
RB
SB
CB
RB
SB
0
0
0
1
1
1
1
1
1
0
1
0
1
1
1
1
1
1
0
0
Hold
0
1
1
0
J
H01
CB H03
H02
N01
Q
1
0
1
1
Invert
Hold
X
X
X
X
X
X
X
X
Min Pulse
Min Pulse
X
X
X
0
1
0
1
0
0
K
N02 QB
(LH) 0.420
0.716
0.609
0.273
0.709
0.011
0.010
0.010
0.011
0.015
0.013
0.013
0.015
0.022
0.017
0.017
0.022
J
K
CB
RB
SB
1.0
1.0
1.0
2.3
2.1
Q
34
F787NQ
CB
→
Q
(LL)
(LL)
0.372
0.177
(LH) 0.379
0.750
←
Prohibition
H04
RB
RB
SB
→
→
Q
Q
X:Irrelevant
Set up time
Set up time
Hold time
J
K
J
Logic Diagram for "Q output"
0.740
0.200
0.370
0.180
0.390
0.670
0.430
0.620
0.351
0.655
Truth Table for "Q output"
Hold time
K
SB
J
K
CB
RB
SB
Q
H05
Release time
Release time
Removal time
Removal time
Min Pulse
RB
SB
RB
SB
CB
RB
SB
0
0
0
1
1
1
1
1
1
0
1
0
1
1
1
1
1
1
0
0
Hold
0
J
H01
CB H03
H02
N01 Q
1
0
1
Invert
Hold
0
1
1
Min Pulse
Min Pulse
X
X
X
X
X
X
X
X
X
X
X
(LH) 0.326
(LL) 0.331
(LH) 0.432
0.532
0.553
0.869
0.536
0.011
0.011
0.011
0.011
0.016
0.014
0.016
0.014
0.023
0.020
0.023
0.020
J
K
CB
RB
SB
1.0
1.0
1.0
2.3
2.1
QB
31
F787NB
CB
→
QB
K
1
0
← Prohibition
RB
SB
→
→
QB
QB
H04
RB
(LL)
0.293
0.730
0.740
0.190
0.370
0.170
0.410
0.630
0.420
0.539
0.695
0.553
X:Irrelevant
Set up time
Set up time
Hold time
Hold time
Release time
Release time
Removal time
Removal time
Min Pulse
J
K
J
Logic Diagram for "QB output"
Truth Table for "QB output"
K
RB
SB
RB
SB
CB
RB
SB
SB
J
K
CB
RB
SB
QB
H05
0
0
0
1
1
1
1
1
1
0
1
0
1
1
1
1
1
1
0
0
Hold
1
J
H01
CB H03
H02
1
0
0
Invert
Hold
1
Min Pulse
Min Pulse
1
1
X
X
X
X
X
X
X
X
X
X
X
K
N01 QB
0
0
← Prohibition
H04
RB
X:Irrelevant
Block Library A13872EJ5V0BL
2 - 354
Block Library A13872EJ5V0BL
2 - 355
ETC [ ETC ]
