MB3773
)
(1) DC Characteristics (Continued
(VCC=5V, Ta=25°C)
Value
Parameter
Condition
Symbol
Unit
Min
Typ
Max
Power on reset operating
VCT = 1.0V
CT charge current
ICTU
0.5
1.2
2.5
µA
V
VRESET = 0.4V
IRESET = 0.2mA
Min. supply voltage for RESET
Min. supply voltage for RESET
VCCL1
VCCL2
-
-
0.8
0.8
1.2
1.2
VRESET =VCC -0.1V
RL (2 pin - GND) = 1MΩ
V
(
2)AC Characteristics
(VCC=5V, Ta=25°C)
Value
Parameter
Condition
Symbol
TPI
Unit
Min
Typ
Max
5V
VCC 4V
VCC input pulse width
8.0
-
-
µs
CK input pulse width
CK input frequency
CK
TCKW
3.0
-
-
µs
or
TCK
20
5
-
-
µs
Watch dog timer
watching time
CT = 0.1µF
CT = 0.1µF
TWD
10
15
ms
Watch dog timer
reset time
TWR
TPR
TPD1
TPD2
tR
1
50
-
2
100
2
3
ms
ms
Rising reset hold time
T
C = 0.1µF, V
CC
150
10
RESET, RL = 2.2kΩ
CL = 100pF
Output propagation
Delay time from VCC
µs
µs
RESET, RL = 2.2kΩ
CL = 100pF
-
3
10
RL = 2.2kΩ
CL = 100pF
Output rising time *
Output falling time *
-
1.0
0.1
1.5
0.5
RL = 2.2kΩ
CL = 100pF
tF
-
* Output rising/falling time are measured at 10% to 90% of voltage.
5
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