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MIC809 - Microprocessor Reset Circuits

General Description

The MIC809 and MIC810 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor-based systems.

The function of these devices is to assert a reset if the power supply drops below a designated reset threshold level.

Key Features

  • Precision voltage monitor for 3V, 3.3V, or 5V power supplies.
  • /RESET remains valid with VCC as low as 1.4V for SOT-23 packaged part.
  • /RESET remains valid with VCC as low as 1V for SC70-packaged part.
  • Typically less than 15μA supply current for SOT-23 packaged part.
  • 5µA (typical) supply current for SC70-packaged part.
  • 140ms (minimum) reset pulse widths available.
  • Available in 3-pin SOT-23 and SC-70 package.

📥 Download Datasheet

Datasheet Details

Part number MIC809
Manufacturer Micrel Semiconductor
File Size 580.68 KB
Description Microprocessor Reset Circuits
Datasheet download datasheet MIC809 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MIC809/810 Microprocessor Reset Circuits General Description The MIC809 and MIC810 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor-based systems. The function of these devices is to assert a reset if the power supply drops below a designated reset threshold level. Several different reset threshold levels are available to accommodate 3V, 3.3V or 5V powered systems. The MIC809 has an active-low /RESET output, while the MIC810 offers an active-high RESET output. The reset output is guaranteed to remain asserted for a minimum of 140ms after VCC has risen above the designated reset threshold level. Having a push-pull output stage, the MIC809/810 does not require a pull-up resistor at the output.