The ILC705/ILC706/ILC707/ILC708 are low cost micro-

processor supervisory circuits that monitor power sup-

plies in microprocessor based systems. Circuit functions

include a watchdog timer, microprocessor reset, power

failure warning and a debounced manual reset input.

The ILC705 and ILC706 offer a watchdog timer function

while the ILC707 and ILC708 have an active high reset

output in addition to the active low reset output.

Supply voltage monitor levels of 4.65V and 4.4V are

available. The ILC705/ILC707 have a nominal reset

threshold level of 4.65V while the ILC706 and ILC708

have a 4.4V nominal reset threshold level. When the sup-

ply voltage drops below the respective reset threshold

level, RESET is asserted.

ILC705/706/707/708

mP Supervisory Circuit

Impala Linear Corporation

Impala Linear Corporation

1

(408) 574-3939

www.impalalinear.com

Sept 1999

ILC705-708 1.0

Battery Detect

! Controllers

ILC705

ILC706

ILC707

ILC708

Top View

MR

PFO

2

1

8

6

WDI

PFI

RESET

GND

4

3

5

7

N Package - 8 Lead Plastic DIP Package

M Package - 8 Lead Plastic SOIC Package

2

1

8

6

4

3

5

7

WDO

MR

PFO

NC

PFI

RESET

GND

RESET

Part

Package

Temp. Range

ILC70_N

8-Lead PDIP

-40°C to +85°C

ILC70_M

8-Lead SOIC

-40°C to +85°C

ILC705

ILC706

µµP

+5 V (Regulated)

WDI

NMI

WDO

GND

PFI

I/O Line

MR

RESET

RESET

Manual

Reset

DC Voltage

(Unregulated)

Interrupt

PFO

Typical Circuit

Pin Package Configuration

General Description

Features

Applications

Ordering Information