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MB91155 Datasheet(PDF) 89 Page - fujitsu semiconductor

Part # MB91155
Description  32-bit Proprietary Microcontrollers
PDF  105 Pages
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Manufacturer  FUJITSU [fujitsu semiconductor]
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Logo FUJITSU - fujitsu semiconductor

MB91155 Datasheet(HTML) 89 Page - fujitsu semiconductor

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MB91F155A/MB91155/MB91154
89
(3) Reset Input Ratings
(VCC
= 3.15 V to 3.6 V, VSS = AVSS = 0 V, TA = 0 °C to +70 °C)
(4) Power On Reset
(VCC
= 3.15 V to 3.6 V, VSS = AVSS = 0 V, TA = 0 °C to +70 °C)
Parameter
Symbol
Pin
name
Condition
Value
Unit
Remarks
Min
Max
Reset input time
tRSTL
RST
tCP
× 5
ns
Parameter
Symbol
Pin
name
Condition
Value
Unit
Remarks
Min
Max
Power supply rising time
fR
VCC
20
ms
VCC
< 0.2 V before
turning up the power.
Power supply cutoff time
tOFF
2
ms
RST
tRSTL
0.2 VCC
VCC
tR
0.9
× VCC
0.2 V
Holding RAM data.
tOFF
VCC
VSS
VCC
RST
tRSTL
A rapid change in supply voltage might activate power on reset.
When the supply voltage needs to be varied while operating, it is recommended to minimize
fluctuations to smoothly start up the voltage.
It is recommended to keep the rising
inclination less than 50 mV/ms.
When turning on the power, start the RST pin in
“L” level state, allow as much time as for tRSTL after
reaching the VCC power supply level and then set
the pin to the H level.



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