9. Timing
(1) Set up time (tsu)
The data setup time required before arrival of an active edge of a clock to read data correctly.
t
su
D
Q
Data
Clock
C
QB
(2) Hold time (th)
The data hold time required after receiving an active edge of the clock to read data correctly.
t
h
D
Q
Data
Clock
C
QB
(3) Release time (trel)
The time required from the release of a reset (or set) signal of a latch or flip-flop until the active edge of
the next clock pulse becomes valid.
Set
t
rel
Reset/Set
Clock
D
Q
C
QB
Reset
Preface-8
Block Library A13872EJ5V0BL