SP703 datasheet(13/16 Pages) SIPEX

tên linh kiện	SP703

Giải thích chi tiết về linh kiện	Low Power Microprocessor Supervisory with Battery Switch-Over

PDF	16 Pages

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nhà sản xuất	SIPEX [Sipex Corporation]

Trang chủ	http://www.sipex.com

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13 / 16 page

SP703/704DS/07

SP703/704 Low Power Microprocessor Supervisory

Interfacing to Microprocessors with

Bidirectional Reset Pins

Microprocessors with bidirectional reset pins,

such as the Motorola 68HC11 series, can

contend with this series' RESET output. If, for

example, the RESET output is driven high and

the

µP wants to pull it low, indeterminate logic

levels may result. To correct this, connect a

4.7K

Ω resistor between the RESET output and

the

µP reset I/O, as in Figure 16. Buffer the

RESET output to other system components.

Figure 15. Monitoring a Negative Voltage

Figure 16. Interfacing to Microprocessors with

Bidirectional RESET I/O

PFI

PFO

VCC

+5V

GND

PFO

V-

+5V

*VTRIP 0V

5.0 - 1.25

1.25 - VTRIP

V-

*VTRIP is a negative voltage

VCC

+5V

GND

VCC

+5V

GND

RESET

4.7K

Ω

µP

Buffered RESET connects to System Components

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