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參數(shù)資料
| 型號： | MB90F378PFF-GE1 |
| 廠商： | FUJITSU LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP144 |
| 封裝： | 0.40 MM PITCH, PLASTIC, LQFP-144 |
| 文件頁數(shù)： | 17/65頁 |
| 文件大?。?/td> | 323K |
| 代理商： | MB90F378PFF-GE1 |
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MB90378 Series
17
7.
Power supply pins
When a device has two or more V
CC
or V
SS
pins, the pins that should have equal potential are connected within
the device in order to prevent a latch-up or other malfunction. To reduce extraneous emission, to prevent a
malfunction of the strobe signal due to an increase in the group level, and to maintain the local output current
rating, connect all these power supply pins to an external power supply and ground them.
The current source should be connected to the V
CC
and V
SS
pins of the device with minimum impedance. It is
recommended that a bypass capacitor of about 0.1
μ
F be connected near the terminals between V
CC
and V
SS
.
8.
Analog power-on sequence of A/D converter and D/A converter
The power to the A/D converter and D/A converter (AV
CC
, AVR) and analog inputs (AN0 to AN11) must be turned
on after the power to the digital circuits (V
CC
) is turned on. When turning off the power, turn off the power to the
digital circuits (V
CC
) after turning off the power to the A/D converter, D/A converter and analog inputs. When the
power is turned on or off, AVR should not exceed AV
CC
. Also, when a pin that is used for A/D analog input is also
used as an input port, the input voltage should not exceed AV
CC
. (The power to the analog circuits and the power
to the digital circuits can be simultaneously turned on or off.)
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