參數(shù)資料
型號: GMS82524T
英文描述: [General Purpose(1) : ADC/ LED/ SCI/ PWM]
中文描述: [通用(1):藝術(shù)發(fā)展局/發(fā)光/工商/脈寬調(diào)制]
文件頁數(shù): 74/110頁
文件大?。?/td> 1980K
代理商: GMS82524T
GMS81508B/16B/24B, GMS82512/16/24
MAY. 2001 Ver 2.0
71
is external pull-down register, it is set to low.
Figure 18-2 Application Example of Unused Input Port
Figure 18-3 Application Example of Unused Output Port
INPUT PIN
V
DD
GND
i
V
DD
X
Weak pull-up current flows
V
DD
internal
pull-up
INPUT PIN
i
V
DD
X
Very weak current flows
V
DD
O
O
OPEN
OPEN
i=0
O
i=0
O
GND
When port is configure as an input, input level should
be closed to 0V or 5V to avoid power consumption.
OUTPUT PIN
GND
i
In the left case, much current flows from port to GND.
X
ON
OFF
OUTPUT PIN
GND
i
In the left case, Tr. base current flows from port to GND.
To avoid power consumption, there should be low output
to the port.
i=0
X
OFF
ON
V
DD
L
ON
OFF
OPEN
GND
V
DD
L
ON
OFF
ON
OFF
O
O
V
DD
O
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