參數(shù)資料
型號: MB90561A
廠商: Fujitsu Limited
英文描述: 16-bit Proprietary Microcontrollers(16位微控制器)
中文描述: 16位微控制器專利(16位微控制器)
文件頁數(shù): 77/91頁
文件大小: 931K
代理商: MB90561A
MB90560/565 Series
77
(3) Power-On Reset
(T
A
=
40
°
C to
+
85
°
C, V
CC
=
2.7 V to 3.6 V, V
SS
=
AV
SS
=
0.0 V)
Value
* : V
CC
must be less than 0.2 V before power-on.
Notes :
The above rating values are for generating a power-on reset.
Some internal registers are only initialized by a power-on reset. Always apply the power supply in
accordance with the above ratings if you wish to initialize these registers.
Parameter
Symbol
Pin Name
Condi-
tion
Unit
Remarks
Min.
Max.
Power supply rise time
t
R
V
CC*
0.05
30
ms
Power supply cutoff time
t
OFF
V
CC
4
ms
For repeated operation
V
CC
V
CC
2.5 V
V
SS
t
R
0.2 V
0.2 V
2.7 V
t
OFF
0.2 V
Maintain RAM data
Recommended rate of voltage
rise is 50 mV/ms or less.
Sudden changes in the power supply voltage may cause a power-on reset.
The recommended practice if you wish to change the power supply voltage while the device is
operating is to raise the voltage smoothly as shown below. Also, changes to the supply voltage
should be performed when the PLL clock is not in use. The PLL clock may be used, however, if
the rate of voltage change is 1 V/s or less.
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