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ISL88813 Datasheet Microprocessor Supervisors

Manufacturer: Renesas

Overview: DATASHEET ISL88705, ISL88706, ISL88707, ISL88708, ISL88716, ISL88813 FN8092 Rev 6.00 November 30, 2015 Designed with high reset threshold accuracy and low power consumption, the ISL88705, ISL88706, ISL88707, ISL88708, ISL88716 and ISL88813 devices are microprocessor supervisors that are designed to monitor power-supply and battery functions in microprocessor systems. They can help to lower system cost, reduce board space requirements and increase the reliability of systems. These devices provide essential functions such as supply voltage supervision by asserting a reset output during power-up and power-down as well as during brownout conditions. An auxiliary voltage monitor is provided for detecting power failures warning the system of low battery conditions or presence detection. In addition, an independent watchdog timer helps to monitor microprocessor activity every 1.6s (typical). An active-low manual reset is offered and reset signals remain asserted until VDD returns to proper operating levels. Users can increase the nominal 200ms power-on reset time-out delay by adding an external capacitor to the CPOR pin on the ISL88707 and ISL88708.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Key Features

  • Fixed-Voltage Options Allow Precise Monitoring of +3.0V, +3.3V, and +5.0V Power Supplies.
  • Additional Voltage Monitor for Power-Fail Detection or Low-Battery Warning - Monitors Voltages Down to 1.25V - Adjustable Power-Fail Input Threshold.
  • Watchdog Timer Capability With 1.6s Time-out.
  • Both RST and RST Outputs Available.
  • 140ms Minimum Reset Pulse Width with Option to Customize Using an External Capacitor.
  • Manual Reset Input on all Devices.

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