SG Micro Corp

SGM811 Microprocessor Supervisory with Manual Reset Input

GENERAL DESCRIPTION

The SGM811/SGM812 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. The SGM811/SGM812 is designed to monitor seven different voltages; these voltages have been selected for the effective monitoring of 1.8V, 2.5V, 3V, 3.3V and 5V supply voltage levels.

They provide a reset output during power-up, power-down and brownout conditions. On power-up, an internal timer holds reset asserted for 240ms. This holds the microprocessor in a reset state until conditions have stabilized. The /RESET output remains operational with VCC as low as 1V. The SGM811 provides an active low reset signal (/RESET) while the SGM812 provides an active high signal (RESET) output.

The SGM811/SGM812 has a manual reset input. The manual reset function is very useful, especially if the circuit in which the SGM811/SGM812 is operating enters into a state that can only be detected by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked system. The devices come in SOT-143 and SOT-23-5 packages.


PIN CONFIGURATIONS


FEATURES

• Superior Upgrade for MAX811/MAX812 and
   ADM811/ADM812
• Specified Over Temperature
• Low Power Consumption (13μA TYP)
• Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V and 5V Options
• Reset Assertion Down to 1V V
CC
• 150ms Min Power-On Reset
   Logic Low /RESET Output (SGM811)
   Logic High RESET Output (SGM812)
• Manual Reset Input
• Green SOT-143 and SOT-23-5 Packages

APPLICATIONS

Microprocessor Systems
Controllers
Intelligent Instruments
Automotive Systems
Safety Systems
Portable Instruments


ORDERING INFORMATION

Part Number Status Package Pins Pb-Free Temp Range
SGM811-LXN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM811-MXN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM811-JXN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM811-TXN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM811-SXN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM811-RXN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM811-ZXN5/TR Production SOT-23-5 5 Y -40℃ to +125℃ Samples
SGM811-LXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM811-MXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM811-JXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM811-TXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM811-SXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM811-RXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM811-ZXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples
SGM811-XXKA4/TR Production SOT-143 4 Y -40℃ to +125℃ Samples

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