參數(shù)資料
型號(hào)： MB90594G
廠商： Fujitsu Limited
英文描述： Quadruple 2-Input Positive-OR Gate 20-LCCC -55 to 125
中文描述： 16位微控制器專有
文件頁(yè)數(shù)： 42/51頁(yè)
文件大?。?/td> 714K
代理商： MB90594G
MB90590/590G Series
42
(3) Power On Reset
(MB90V590A, MB90F594A, MB90594, MB90V590G, MB90F594G, MB90594G:
V
CC
=
5.0 V
±
10 %, V
SS
=
AV
SS
=
0V, T
A
=
40
°
C to
+
85
°
C)
(MB90F591A, MB90591: V
CC
=
5.0 V
±
5 %, V
SS
=
AV
SS
=
0V, T
A
=
40
°
C to
+
85
°
C)
Value
Note
V
CC
must be kept lower than 0.2 V before power-on.
The above values are used for creating a power-on reset.
Some registers in the device are initialized only upon a power-on reset. To initialize these register, turn on
the power supply using the above values.
.
Parameter
Symbol Pin name
Condition
Unit
Remarks
Min.
Max.
Power on rise time
t
R
V
CC
—
0.05
30
ms
Power off time
t
OFF
V
CC
50
—
ms
Due to repetitive operation
t
R
3.5 V
0.2 V
V
CC
0.2 V
0.2 V
t
OFF
Sudden changes in the power supply voltage may cause a power-on reset.
To change the power supply voltage while the device is in operation, it is recommended to
raise the voltage smoothly to suppress fluctuations as shown below.
In this case, change the supply voltage with the PLL clock not used. If the voltage drop is 1
V or fewer per second, however, you can use the PLL clock.
V
CC
V
SS
3V
RAM data being held
It is recommended to keep the
rising speed of the supply voltage
at 50 mV/ms or slower.
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