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FM811 - Microprocessor Reset Circuits

General Description

The FM811/FM812 is a low cost microprocessor supervisory circuit that asserts a reset if the power supply drops below a designated threshold or the manual reset pin is forced low.

Several different reset thresholds are available to accommodate systems operating at 3V, 3.3V or 5V.

Key Features

  • Feature.
  • Precision Voltage Monitor for 3V, 3.3V or 5V Power Supplies.
  • 6µA Supply Current.
  • 140ms Minimum Reset Pulse Width.
  • RESET Remains Valid with VCC as Low as 1.4V.
  • Active Low Manual Reset Input.
  • No External Components.
  • 4-Pin SOT-143 Package.

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FM812 Microprocessor Reset Circuits
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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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www.fairchildsemi.com FM811/812 Microprocessor Reset Circuits Features • Feature • Precision Voltage Monitor for 3V, 3.3V or 5V Power Supplies • 6µA Supply Current • 140ms Minimum Reset Pulse Width • RESET Remains Valid with VCC as Low as 1.4V • Active Low Manual Reset Input • No External Components • 4-Pin SOT-143 Package Description The FM811/FM812 is a low cost microprocessor supervisory circuit that asserts a reset if the power supply drops below a designated threshold or the manual reset pin is forced low. Several different reset thresholds are available to accommodate systems operating at 3V, 3.3V or 5V.