Revision 5/15/2009

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

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

4

SE811

4-Pin Microprocessor Reset Monitor

(Preliminary)

Note 1:

Exceeding the absolute maximum rating may damage the device.

Note 2:

The device is not guaranteed to function outside its operating rating.

Note 3:

and the regulator will go into thermal shutdown. See “Thermal Consideration” section for details

Note 4:

RESET threshold temperature coefficient is the worst case voltage change divided by the total temperature

range.

PIN DESCRIPTION:

Pin No.

Symbol

Description

1

GND

Ground

2

RESET

RESET output remains low while Vcc is below the reset voltage

threshold and for 150mSec(typ) after Vcc rises above reset threshold

3

MR

Manual Reset Input. A logic low on MR asserts. Reset remains asserted

as long as MR is low and for 150ms after MR returns high. It can be

driven from a TTL or CMOS-logic line, Or shorted to ground with a

switch. Leave Open if unused.

4

Vcc

Supply Voltage (typ.)