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MB3773
9
(2)AC Characteristics
(
VCC = 5 V, Ta = + 25 °C)
* : Output rising/falling time are measured at 10 % to 90 % of voltage.
Parameter Symbol Condition
Value
Unit
Min Typ Max
V
CC
input pulse width TPI
VCC
8.0 µs
CK input pulse width T
CKW
CK
3.0 µs
CK input frequency T
CK 20 µs
Watch dog timer watching time TWD CT = 0.1 µF 5 10 15 ms
Watch dog timer reset time T
WR CT = 0.1 µF123ms
Rising reset hold time T
PR
CT = 0.1 µF, V CC
50 100 150 ms
Output propagation
delay time from V
CC
TPD1
RESET, RL = 2.2 kΩ,
C
L = 100 pF
210
µs
T
PD2
RESET, RL = 2.2 kΩ,
C
L = 100 pF
310
Output rising time* t
R
RL = 2.2 kΩ,
C
L = 100 pF
1.0 1.5
µs
Output falling time* t
F
RL = 2.2 kΩ,
C
L = 100 pF
0.1 0.5
5 V
4 V
or