MAX709CPA 查看數據表（PDF） - Maxim Integrated

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MAX709CPA

Power-Supply Monitor with Reset

Maxim Integrated 

Power-Supply Monitor with Reset

VCC

MAX709

RESET

R1

GND

VCC

MAX709

4.7k

RESET

GND

BUFFER

VCC

µP

RESET

BUFFERED RESET

TO OTHER SYSTEM

COMPONENTS

GND

Figure 2. RESET Valid to VCC = Ground Circuit

Interfacing to µPs with

Bidirectional Reset Pins

Microprocessors with bidirectional reset pins (such as

the Motorola 68HC11 series) can contend with the

MAX709 reset output. If, for example the MAX709

RESET output is asserted high and the µP wants to pull

it low, indeterminate logic levels may result. To correct

this, connect a 4.7kΩ resistor between the MAX709

RESET output and the µP reset I/O (see Figure 3).

Buffer the MAX709 RESET output to other system com-

ponents.

Figure 3. Interfacing to µPs with Bidirectional Reset I/O

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