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參數(shù)資料
| 型號： | MB90F962PMT |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-bit Microcontroller |
| 中文描述： | 16-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 13/51頁 |
| 文件大?。?/td> | 790K |
| 代理商： | MB90F962PMT |
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MB90960 Series
13
■
HANDLING DEVICES
Special care is required for the following when handling the device :
Preventing latch-up
Treatment of unused pins
Using external clock
Notes on during operation of PLL clock mode
Power supply pins (V
CC
/V
SS
)
Pull-up/down resistors
Crystal oscillator circuit
Turning-on sequence of power supply to A/D converter and analog inputs
Connection of unused pins of A/D converter
Notes on energization
Stabilization of power supply voltage
Initialization
Correspondence with
+
105
°
C or more
1.
Preventing latch-up
CMOS IC chips may suffer latch-up under the following conditions :
A voltage higher than V
CC
or lower than V
SS
is applied to an input or output pin.
A voltage higher than the rated voltage is applied between V
CC
and V
SS
.
The AV
CC
power supply is applied before the V
CC
voltage.
Latch-up may increase the power supply current drastically, causing thermal damage to the device.
When used, note that maximum rated voltage is not exceeded.
For the same reason, also be careful not to let the analog power-supply voltage (AV
CC
, AVR) exceed the digital
power-supply voltage.
2.
Treatment of unused pins
Leaving unused input pins open may result in misbehavior or latch-up and possible permanent damage of the
device. Therefore, they must be pulled up or pulled down through resistors. In this case, those resistors should
be more than 2 k
.
Unused bidirectional pins should be set to the output state and can be left open, or the input state with the above
described connection.
3.
Using external clock
To use external clock, drive the X0 (X0A) pin and leave X1 (X1A) pin open.
MB90960 Series
X0 (X0A)
X1 (X1A)
Open
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