MB89143 View Datasheet(PDF) - Fujitsu
Part Name
Description
Manufacturer
MB89143 Datasheet PDF : 31 Pages
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MB89143A/144A
4. AC Characteristics
(1) Reset Timing
Parameter
RST “L” pulse width
RST noise limit width
Symbol
tZLZH
tZLNC
(AVR = VCC = 5.0 V±10%, AVSS = VSS = 0.0 V, TA = –40°C to +85°C)
Value
Condition
Unit
Min. Typ. Max.
Remarks
—
48 tXCYL
—
—
ns
—
20
40
60
ns
Note: tXCYL is the oscillation cycle (1/FCH) to input to the X0 pin.
RST
tZLZH
tZLNC
0.2 VCC
0.2 VCC
(2) Power-on Reset
Parameter
Power supply rising
time
Power supply cut-off
time
Symbol
tR
tOFF
Condition
—
—
(AVSS = VSS = 0.0 V, TA = –40°C to +85°C)
Value
Unit
Min. Max.
Remarks
—
50
ms
Power-on reset function
only
1
—
ms
Due to repeated
operations
Note: Make sure that power supply rises within the selected oscillation stabilization time.
If power supply voltage needs to be varied in the course of operation, a smooth voltage rise is
recommended.
tR
tOFF
2.0 V
0.2 V
0.2 V
0.2 V
VCC
22
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