Revision 7/28/2009

Preliminary and all contents are subject to change without prior notice.

© Seaward Electronics, Inc., 2007. • www.seawardinc.com.cn

1

SE810

3-Pin Microprocessor Reset Monitor

(Preliminary)

Description

The SE810 is a cost-effective system

supervisor Integrated Circuit (IC) designed to

monitor VCC in digital and mixed signal systems

and provide a warning signal when the system

power supply is out of working range, and a reset

signal to the host processor when necessary. No

external components are required.

The reset output is driven active within 20μsec

of VCC falling through the reset voltage threshold.

Reset is maintained active for a 150mSec(typ) after

VCC rises above the reset threshold. The SE810

has an active-high RESET output.

The SE810 is characterized for operation from

-40oC to 125oC, junction temperature. The SE810

is optimized to reject fast transient glitches on the

makes these devices suitable for battery powered

applications. The output voltages range from 1.7V

to 4.5V in 100mV increments. Standard voltage

versions are 2.30, 2.63, 2.93, 3.08, 4.0, 4.38, and

4.63V.

Features

5.0V Supplies

150mSec typical RESET Output Delay.

Low 7μA Supply Current typical.

Small SOT-23 Package and TO-92 Package

No External Components

ESD rating is 7KV(HBM).

Wide Operating Temperature: -40°C to 125°C

100% Lead (Pb)-Free

Pin Configuration

Application

Computers

Embedded systems

Battery powered equipment

Critical µP power supply monitoring

Application Diagram

GND

GND

Vcc

Vcc

Vcc

C=0.1uF

SE810

RESET

RESET

INPUT

PROCESSOR