參數(shù)資料
型號(hào)： MB90V595CR
元件分類(lèi)： 微控制器/微處理器
英文描述： 16-BIT, 16 MHz, MICROCONTROLLER, CPGA256
封裝： CERAMIC, PGA-256
文件頁(yè)數(shù)： 32/47頁(yè)
文件大?。?/td> 674K
代理商： MB90V595CR
MB90595/595G Series
38
(3)Power On Reset
(VCC
= 5.0 V±10%, VSS = AVSS = 0.0 V, TA = 40 °C to +85 °C)
*: VCC must be kept lower than 0.2 V before power-on.
Note:
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
Value
Unit
Remarks
Min. Max.
Power on rise time
tR
VCC
—
0.05
30
ms
*
Power off time
tOFF
VCC
50
—
ms
Due to repetitive operation
tR
2.7 V
0.2 V
VCC
0.2 V
tOFF
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.
VCC
VSS
3 V
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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