TCM809 datasheet(6/16 Pages) MICROCHIP

部品番号	TCM809

部品情報	3-Pin Microcontroller Reset Monitors

PDF	16 Pages

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メーカー	MICROCHIP [Microchip Technology]

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6 / 16 page

TCM809/TCM810

DS21661D-page 6

4.3

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

Ω resistor in series with the output of the TCM809/

TCM810 (Figure 4-3). 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 4-3:

Interfacing the TCM809 to a

Bidirectional RESET I/O.

TCM809

RESET

GND

RESET

GND

Buffered RESET

To Other System

Components

Micro-

4.7 k

controller

Buffer

PICmicro®

TCM809 データシート(PDF) 6 Page - Microchip Technology