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FM812 - Microprocessor Reset Circuits

Download the FM812 datasheet PDF. This datasheet also covers the FM811 variant, as both devices belong to the same microprocessor reset circuits family and are provided as variant models within a single manufacturer datasheet.

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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (FM811_FairchildSemiconductor.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Fairchild (now onsemi)

Part Number Description
FM811 Microprocessor Reset Circuits
FM803 3-Pin C Supervisor Device
FM809 3-Pin C Supervisor Circuits

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.

View original datasheet text
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.