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TCM809 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 6 Page - Microchip Technology

๋ถ€ํ’ˆ๋ช… TCM809
์ƒ์„ธ๋‚ด์šฉ  3-Pin Microcontroller Reset Monitors
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์ œ์กฐ์‚ฌ  MICROCHIP [Microchip Technology]
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TCM809 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 6 Page - Microchip Technology

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TCM809/TCM810
DS21661C-page 6
๏ฃฉ 2004 Microchip Technology Inc.
3.3
Controllers and Processors With
Bidirectional I/O Pins
Some microcontrollers have bidirectional 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
โ„ฆ resistor in series with the output of the TCM809/
TCM810 (Figure 3-3). If there are other components in
the system that 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 3-3:
Interfacing the TCM809 to a
Bidirectional RESET I/O.
TCM809
V
DD
RESET
GND
RESET
GND
Buffered RESET
To Other System
Components
Micro-
4.7 k
โ„ฆ
controller
Buffer
PICmicroยฎ


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