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參數(shù)資料
| 型號： | MB90M407PF |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 53/68頁 |
| 文件大?。?/td> | 1486K |
| 代理商： | MB90M407PF |
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MB90M405 Series
DS07-13718-3E
57
(3) Power-On Reset
(Ta
= 40 °C to +85 °C, VDD-FIP = VCC-CPU = AVCC = 3.0 V to 3.6 V, VSS-IO = VSS-CPU = AVSS = 0 V)
* : VCC 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
Value
Unit
Remarks
Min
Max
Power supply rise time
tR
VCC*
0.05
30
ms
Power supply cutoff time
tOFF
VCC
4
ms
For repeated operation
VCC
2.5 V
VSS
tR
0.2 V
2.7 V
tOFF
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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