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參數(shù)資料
| 型號(hào)： | MB90F244 |
| 廠商： | Fujitsu Limited |
| 英文描述： | Octal Edge-Triggered D-type Flip-Flops With Clock Enable 20-CFP -55 to 125 |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 14/67頁 |
| 文件大?。?/td> | 1403K |
| 代理商： | MB90F244 |
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MB90F244
14
I
HANDLING DEVICES
1. Preventing Latchup
Latchup may occur on CMOS ICs if voltage higher than V
CC
or lower than V
SS
is applied to the input or output
pins other than medium-and high-voltage pins or if higher than the voltage which shown on “1. Absolute Maximum
Ratings” in section “
I
Electrical Characteristics”is applied between V
CC
and V
SS
.
When latchup occurs, power supply current increases rapidly might thermally damage elements. When using,
take great care not to exceed the absolute maximum ratings.
In addition, for the same reasons take care to prevent the analog power supply from exceeding the digital power
supply.
2. Treatment of Unused Pins
Leaving unused input pins open could cause malfunctions. They should be connected to a pull-up or pull-down
resistors.
3. Precautions when Using an External Clock
When an external clock is used, drive X0 only.
4. Power Supply Pins
When there are several V
CC
and V
SS
pins, those pins that should have the same electric potential are connected
within the device when the device is designed in order to prevent misoperation, such as latch-up. However, all
of those pins must be connected to the power supply and ground externally in order to reduce unnecessary
emissions, prevent misoperation of strobe signals due to an increase in the ground level, and to observe the
total output current standards.
In addition, give a due consideration to the connection in that current supply be connected to V
CC
and V
SS
with
the lowest possible impedance.
Finally, it is recommended to connect a capacitor of about 0.1
μ
F between V
CC
and V
SS
near this device as a
bypass capacitor.
For example an external clock
X0
X1
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PDF描述 |
|---|---|
| MB90F244PFT-G | Octal Edge-Triggered D-type Flip-Flops With Clock Enable 20-LCCC -55 to 125 |
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| MB90F334APMC1-G-SPE1 | 制造商:FUJITSU 功能描述: |
| MB90F334APMC-G-JNE1 | 制造商:FUJITSU 功能描述: |
| MB90F334APMC-G-SNE1 | 制造商:FUJITSU 功能描述: |
| MB90F334APMC-G-SPE1 | 制造商:FUJITSU 功能描述: |
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