IMP706SEPA IMP, Inc., IMP706SEPA Datasheet

IMP706SEPA

Manufacturer Part Number

IMP706SEPA

Description

Manufacturer

IMP, Inc.

Datasheet

1.IMP706SEPA.pdf (9 pages)

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The IMP706P/R/S/T/J and IMP708R/S/T/J CMOS supervisor circuits

monitor power-supply and battery voltage level, and P/ C operation.

A reset is generated when the supply drops below 2.63V (IMP706P/R,

IMP708R), 2.93V (IMP706S, IMP708S), 3.08V (IMP706T, IMP708T) or 4.00

(IMP706J, IMP708J).

The family offers several functional options. Each device generates a

reset signal during power-up, power-down and during brownout

conditions.

In addition, the IMP706P/R/S/T/J feature a 1.6 second watchdog timer.

The watchdog timer output will trigger a reset if connected to MR.

Unlike competitive devices, floating the WDI input pin disables the

watchdog timer.

The IMP708R/S/T/J have both active-HIGH and active-LOW reset out-

puts but no watchdog function. The IMP706P has the same pin-out and

functions as the IMP706R but has an active-HIGH reset output.

A versatile power-fail circuit, useful in checking battery levels and

non-5V supplies, has a 1.25V threshold. All devices have a manual

reset input.

All devices are available in 8-pin DIP, SO and the compact MicroSO

packages. The MicroSO package requires 50% less PC board area than

the conventional SO package.

3/3.3/4.0V

1999 IMP, Inc.

Block Diagrams

WDI

PFI

OWER

– Lo

– W

– Br

– Lo

– W

– Br

IMP706P/R/S/T/J

atc

20k

w suppl

2.63V (IMP706P/R)

2.93V (IMP706S)

3.08V (IMP706T)

4.00V (IMP706J)

wnout det

Transition

ANAGEMENT

Detector

–

hdog timer

1.25V

Generator

Watchdog

Timebase

y cur

P Super

RESET

Timer

IMP706P/R/S/T/J, IMP708R/S/T/J

–

ection

GND

ent

visor Cir

706P_01.eps

WDO

RESET

(RESET) IMP706P

PFO

408-432-9100/www.impweb.com

cuits

PFI

Computers and controllers

CTI applications

Embedded controllers

Battery operated systems

Intelligent instruments

Wireless communication systems

PDAs and handheld equipment

Lower power, pin compatible replacements for

Maxim MAX706P/R/S/T, MAX708R/S/T

Precision power supply monitor

Debounced manual reset input

Auxiliary voltage monitor comparator

200ms reset time delay

Three reset signal options

DIP, SO and MicroSO packages

Guaranteed RESET assertion to V

– 30% lower supply current:140µA vs. 200µA

– 2.63V threshold (IMP706P/R, IMP708R)

– 2.93V threshold (IMP706S, IMP708S)

– 3.08V threshold (IMP706T, IMP708T)

– New 4.00V threshold (IMP706J, IMP708J)

– 1.25V threshold

– Battery monitor/auxiliary supply monitor

Watchdog timer (IMP706P/R/S/T/J)

– Watchdog can be disabled by floating WDI

– Active HIGH: IMP706P

– Active LOW: IMP706R/S/T/J

– Active HIGH & LOW outputs: IMP708R/S/T/J

IMP708R/S/T/J

20k

2.63V (IMP708R)

2.93V (IMP708S)

3.08V (IMP708T)

4.00V (IMP708J)

–

1.25V

Generator

RESET

Key Features

Applications

–

GND

= 1.1V

706P_02.eps

RESET

PFO

Related parts for IMP706SEPA

IMP706SEPA Summary of contents

Page 1

... PFI – 1.25V IMP706P/R/S/T/J GND 1999 IMP, Inc. © visor Cir cuits visor Cir cuits Lower power, pin compatible replacements for Maxim MAX706P/R/S/T, MAX708R/S/T – 30% lower supply current:140µA vs. 200µA Precision power supply monitor – ...

Page 2

... IMP706PEPA 8-Plastic DIP IMP706PESA 8-SO IMP706RCPA 8-Plastic DIP IMP706RCSA 8-SO IMP706RCUA 8-MicroSO IMP706REPA 8-Plastic DIP IMP706RESA 8-SO IMP706SCPA 8-Plastic DIP IMP706SCSA 8-SO IMP706SCUA 8-MicroSO IMP706SEPA 8-Plastic DIP IMP706SESA 8-SO IMP706TCPA 8-Plastic DIP IMP706TCSA 8-SO IMP706TCUA 8-MicroSO IMP706TEPA 8-Plastic DIP IMP706TESA 8-SO IMP706JCPA 8-Plastic DIP IMP706JCSA 8-SO IMP706JCUA 8-MicroSO IMP706JEPA ...

Page 3

... 1999 IMP, Inc. © IMP706P/R/S/T/J, IMP708R/S/T/J IMP706P/R/S/T/J, IMP708R/S/T/J Operating Temperature Range IMP706xE, IMP708xE . . . . . . . . . . . . . . . . . . – + 0.3V) IMP706xC, IMP708xC . . . . . . . . . . . . . . . . . . + Storage Temperature Range . . . . . . . . . . . . . . – +160 C Lead Temperature Soldering (10 sec 300 C These are stress ratings only and functional operation is not implied. ...

Page 4

Page 5

... Debounced manual RESET input Power-up/down RESET Watchdog timer Active-HIGH RESET Active-LOW RESET Active-LOW and HIGH RESETs RESET threshold 2.63V 1999 IMP, Inc. © IMP706P/R/S/T/J, IMP708R/S/T/J IMP706P/R/S/T/J, IMP708R/S/T/J Manual reset input. The active LOW input triggers a reset pulse pulled HIGH by a 20k pull- resistor ...

Page 6

... Normally PFO interrupts the processor so the system can be shut down in a controlled manner RESET WDO 0V 706P_04.eps 408-432-9100/www.impweb.com input and 0.15 s with leave floating 2.7V)/50ns (V = 4.5V), the externally set low WDI Three-state operation 1999 IMP, Inc. © CC 706P_05.eps ...

Page 7

... CC IMP70x Supply Voltage 4.7k RESET GND Bi-directional I/O Pin (Example: 68HC11) 1999 IMP, Inc. © IMP706P/R/S/T/J, IMP708R/S/T/J IMP706P/R/S/T/J, IMP708R/S/T/J Ensuring That RESET is Valid Down to V When V CC IMP708R/S/T/J RESET reset outputs no longer pull down; it becomes indeterminate. To avoid the possibility that stray charges could build up and force RESET to the wrong state, a pull-down ...

Page 8

... 408-432-9100/www.impweb.com MicroSO (8-Pin 0.10mm e 0.004in MicroSO (8-Pin).eps (8-Pin) 0 – (8-Pin).eps Plastic DIP (8-Pin – Plastic DIP (8-Pin)a.eps 1999 IMP, Inc. © ...

Page 9

... Fax: 408-434-0335 Fax-on-Demand: 1-800-249-1614 (USA) Fax-on-Demand: 1-303-575-6156 (International) e-mail: info@impinc.com http://www.impweb.com The IMP logo is a registered trademark of IMP, Inc. All other company and product names are trademarks of their respective owners. IMP706P/R/S/T/J, IMP708R/S/T/J IMP706P/R/S/T/J, IMP708R/S/T/J © 1999 IMP, Inc. ...

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