4.4.3 [20] Toggle-Flip-Flop, Superior
Type Function
Type Function
I1
b Toggle 1
O1
b output O1
I2
b Toggle 2
O2
b
negated output O2 =
1O
I3
b Superior Set input
P1
I4
b Superior Reset input
P2
Description:
Output signal changes with the positive pulse edge at input T1 or with the negative pulse edge
at input T2.
TRUE at the Superior Set input sets the output to TRUE. TRUE at the Superior Reset input sets
the output to FALSE.
Via the output buffer, the output signal is globally available.
Inputs Superior Set and Superior Reset are connected in series with the function. Levels on T1-
input I1 and T2 input I2 are processed internally. As soon as the Superior Set or Superior Reset
is reset, the output is switched to the internally saved value.
Toggle-Flip-Flop, Superior
T1
T2
SS
SR
O1
Q
State
x x X 1 0 Off (Superior)
X X 1 0 1 On (Superior)
0 0 0 0 Q
n-1
Hold
0 1 0 0 Q
n-1
Hold
0Æ1
x 0 0
Q
n-1
¯¯¯
Toggle
1 0 0 0 Q
n-1
Hold
1 1 0 0 Q
n-1
Hold
x
0
Æ1
0 0
Q
n-1
¯¯¯
Toggle