SGM706

Low-Cost, Microprocessor

Supervisory Circuit

SG Micro Corp

www.sg-micro.com

DECEMBER2017–REV. B

GENERAL DESCRIPTION

The SGM706 microprocessor supervisory circuit

reduces the complexity and number of components

required to monitor power supply and monitor

microprocessor activity. It significantly improves system

reliability and accuracy compared to separate ICs or

discrete components.

The SGM706 provides power supply monitoring

circuitry that generates a reset output during power-up,

power-down and brownout conditions. The reset output

Independent watchdog monitoring circuitry is also

provided. This is activated if the watchdog input has not

been toggled within 1.6 seconds.

In addition, there is a 1.25V threshold detector for

power-fail warning, low-battery detection, or monitoring

an additional power supply. An active-low manual-reset

The SGM706 is available in Green SOIC-8 package.

The SGM706-S is available in both Green SOIC-8 and

MSOP-8 packages. They operate over an ambient

temperature range of -40

℃ to +85℃.

FEATURES

●

Precision Supply-Voltage Monitor

4.65V for SGM706-L

4.40V for SGM706-M

4.0V for SGM706-J

3.08V for SGM706-T

2.93V for SGM706-S

2.63V for SGM706-R

●

●

200ms Reset Pulse Width

●

Debounced TTL/CMOS-Compatible

Manual-Reset Input

●

Independent Watchdog Timer (1.6sec) Timeout

●

Voltage Monitor for Power-Fail or Low-Battery

Warning

●

-40℃ to +85℃ Operating Temperature Range

●

SGM706 is Available in Green SOIC-8 Package

●

SGM706-S is Available in both Green SOIC-8 and

MSOP-8 Packages

APPLICATIONS

Computers

Controllers

Intelligent Instruments

Automotive Systems

Critical μP Power Monitoring

TYPICAL APPLICATION

MR

PFI

WDO

PFO

WDI

UNREGULATED DC

+5V DC LINEAR

REGULATOR

SGM706

MICROPROCESSOR

PUSHBUTTON

SWITCH

I/O LINE

NMI

INTERRUPT

RESET

RESET