圣邦微电子

SGM708 Low-Cost, Microprocessor Supervisory Circuit

GENERAL DESCRIPTION

The SGM708 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 SGM708 provides power supply monitoring circuitry that generates a reset output during power-up, power-down and brownout conditions. The reset output remains operational with VCC as low as 1V.

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 input (nMR) is also included.

The SGM708 is available in Green SOIC-8 package. It operates over an ambient temperature range of -40℃ to +85℃.



PIN CONFIGURATIONS


FEATURES

● Precision Supply-Voltage Monitor

4.65V for SGM708-L

4.40V for SGM708-M

4.0V for SGM708-J

3.08V for SGM708-T

2.93V for SGM708-S

2.63V for SGM708-R

● Guaranteed RESET Valid at VCC = 1V

● 200ms Reset Pulse Width

● Debounced TTL/CMOS-Compatible

Manual-Reset Input

● Voltage Monitor for Power-Fail or Low-Battery Warning

● Dual Reset Outputs:

(Active-Low and Active-High)

● -40℃ to +85℃ Operating Temperature Range

● Available in Green SOIC-8 Package


APPLICATIONS

Computers

Controllers

Intelligent Instruments

Automotive Systems

Critical μP Power Monitoring



ORDERING INFORMATION

Part Number Status Package Pins Pb-Free Temp Range
SGM708-LYS8G/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples
SGM708-MYS8G/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples
SGM708-JYS8G/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples
SGM708-TYS8G/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples
SGM708-SYS8G/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples
SGM708-RYS8G/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples

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