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參數(shù)資料
| 型號(hào)： | TCM809 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 3-Pin Microcontroller Reset Monitors(3引腳微控制器復(fù)位監(jiān)控器) |
| 中文描述： | 3引腳單片機(jī)復(fù)位監(jiān)控器（3引腳微控制器復(fù)位監(jiān)控器） |
| 文件頁(yè)數(shù)： | 5/16頁(yè) |
| 文件大?。?/td> | 298K |
| 代理商： | TCM809 |
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2002 Microchip Technology Inc.
DS21661B-page 5
TCM809/TCM810
2.3
Controllers and Processors With
Bidirectional I/O Pins
Some microcontrollers have bi-directional reset pins.
Depending on the current drive capability of the control-
ler pin, an indeterminate logic level may result if there
is a logic conflict. This can be avoided by adding a
4.7 k
resistor in series with the output of the TCM809/
TCM810 (Figure 2-3). If there are other components in
the system which require a reset signal, they should be
buffered so as not to load the reset line. If the other
components are required to follow the reset I/O of the
microcontroller, the buffer should be connected as
shown with the solid line.
FIGURE 2-3:
Bidirectional RESET I/O.
Interfacing
the
TCM809
to
a
TCM809
V
DD
RESET
GND
RESET
GND
Buffered RESET
To Other System
Components
Micro
controller
4.7 k
BUFFER
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