IMP1233M IMP Inc, IMP1233M Datasheet

IMP1233M

Manufacturer Part Number

IMP1233M

Description

Low Power/ 5V/ P Reset

Manufacturer

IMP Inc

Datasheet

1.IMP1233M.pdf (6 pages)

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2000 © IMP, Inc.

The IMP1233M supply voltage monitor is an improved, low-power

replacement for the Dallas Semiconductor DS1233M. Maximum supply

current over temperature is a low 20µA, representing 60 percent lower

power as compared to the DS1233M.

The IMP1233M issues an active LOW reset signal whenever the moni-

tored supply is out-of-tolerance. A precision reference and comparator

circuit monitor power supply (V

5- and 10-percent for a 5V power supply. The tolerance is 15-percent for

the 3.3V, IMP1233M. When an out-of-tolerance condition is detected, an

internal power-fail signal is generated which forces an active LOW reset

signal. After V

remains active for 350ms to allow the power supply and system micro-

processor to stabilize.

The IMP1233M is designed with a open-drain output stage and operates

over the extended industrial temperature range. Devices are available in

the compact surface mount SO-8 package.

Other low power products in this family include the IMP1810/11/12/15/

16/17 and IMP1233D.

Family Selection Guide

Block Diagram

Reference

Tolerance

Supply

Bias

6 .

0 .

6 .

, 0

, 5

returns to an in-tolerance condition, the reset signal

3 .

8 .

3 .

–

, 0

, 5

1 .

5 .

1 .

7 .

IMP1233M

350ms Typical

) level. Tolerance level options are

Delay

GND

408-432-9100/www.impweb.com

- n

5.0k

P -

a r

1233M_01.eps

l l u

n i

RESET

I H

N Improved Dallas DS1233M replacement

N Low Supply Current

N Automatically restarts a microprocessor after

N 350ms reset delay after V

N Active LOW power-up reset, 5kΩ internal pull-up

N Precision temperature-compensated voltage

N Eliminates external components

N Pin function compatible with the Motorola

N Motorola 68xxx and HC16 compatible

N Compact surface mount SO-8 package

N Operating temperature – 40°C to +85°C

N Set-top boxes

N Cellular phones

N PDAs

N Energy management systems

N Embedded control systems

N Printers

N Single board computers

— 60% lower maximum supply current

— 20µA maximum (5.5V)

— 15µA maximum (3.6V)

power failure

in-tolerance condition

reference and comparator

MC33064, MC34064, MC33164 and MC34164

IMP1233M

IMP1

GND

V CC

RESET

Typical Application

Key Features

Applications

233M

RESET

Microprocessor

returns to an

1233M_02.eps

Related parts for IMP1233M

IMP1233M Summary of contents

Page 1

... Dallas Semiconductor DS1233M. Maximum supply current over temperature is a low 20µA, representing 60 percent lower power as compared to the DS1233M. The IMP1233M issues an active LOW reset signal whenever the moni- tored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (V ) level ...

Page 2

... Pin Configuration RESET 1 IMP1233M GND 4 Pin Descriptions — Ordering Information ...

Page 3

... CC All voltages are referenced to ground. Supply Voltage V Output Voltage V Output Current I Operating Current I Operating Current I V Trip Point (IMP1233M- CCTP V Trip Point (IMP1233M-55 CCTP V Trip Point (IMP1233M- CCTP ...

Page 4

... Application Information Operation – Power Monitor The IMP1233M detects out-of-tolerance power supply conditions. It resets a processor during power-up and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold (power-down). When an out-of- tolerance V voltage is detected, the RESET signal is asserted ...

Page 5

Page 6

IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Tel: 800-438-3722 Fax: 408-434-0335 e-mail: info@impinc.com http://www.impweb.com The IMP logo ...

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