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UIC809 - MICROPROCESSOR RESET CIRCUITS

General Description

The UTC UIC809 series are resetting circuits which can monitor power supplies especially in microprocessor based systems.

Key Features

  • S.
  • Voltage monitor for 3V or 3.3V or 5V power supplies.
  • Valid RESET remains with VCC as low as 1V.
  • Typical supply current: 5µA.
  • Fixed 140ms minimum reset pulse width.
  • With Manual reset input.

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Full PDF Text Transcription (Reference)

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UNISONIC TECHNOLOGIES CO., LTD UIC809 MICROPROCESSOR RESET CIRCUITS CMOS IC  DESCRIPTION The UTC UIC809 series are resetting circuits which can monitor power supplies especially in microprocessor based systems. In normal operation, the UTC UIC809 series can assert a reset under any of the following situation: the power supply drops below a designated reset threshold level (which is available for 3V or 3.3V or 5V system) is forced low. There is an internal active low RESET output which has already been guaranteed to remain asserted for at 140ms least while VCC rises above the designed threshold level.  FEATURES * Voltage monitor for 3V or 3.