IMP809 datasheet(4/7 Pages) IMP

Part #	IMP809

Description	3-Pin Microcontroller Power Supply Supervisor

PDF	7 Pages

Scroll/Zoom	100%

Manufacturer	IMP [IMP, Inc]

Direct Link	http://www.ds-imp.com.cn/index.asp

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4 / 7 page

IMP809, IMP8

IMP809, IMP81100

Pin Descriptions

Pin Number

Name

Function

GND

Ground

RESET

RESET is asserted LOW if VCC falls below the reset threshold and remains LOW for the

(IMP809)

240ms typical reset timeout period (140ms minimum) after VCC exceeds the threshold.

RESET

RESET is asserted HIGH if VCC falls below the reset threshold and remains HIGH for the

(IMP810)

240ms typical reset timeout period (140ms minimum) after VCC exceeds the threshold.

VCC

Power supply input voltage (3.0V, 3.3V, 5.0V)

VCC

VTH

RESET

140ms

minimum

Active Reset

Timeout Period

RESET

IMP809

IMP810

809/10_03.eps

Reset Timing

The reset signal is asserted–LOW for the IMP809 and HIGH for the

IMP810–when the VCC signal falls below the threshold trip voltage

and remains asserted for 140ms minimum after the VCC has risen

above the threshold.

Detailed Descriptions

Figure 1. Reset Timing Diagram

IMP809 Datasheet(PDF) 4 Page - IMP, Inc