Microchip Technology Inc


System Supervisors and Voltage Detectors

Microchip’s extensive family of competitive cost, precision system supervisors and Reset circuits

System Supervisors Overview

System Supervisor and Voltage Detectors products monitor system voltages to eliminate problems during operation. On power-down, the supervisor monitors the power supply voltage and resets the system if the voltage falls below a predetermined level. On power-up, the supervisor holds the system in reset until the voltage has stabilized.
  • Monitors systems without a MCU. Ex. FPGA, PLDs, power supplies, etc.
  • Can reset all or part of a system
  • Localized shutdown making it faster and less susceptible to noise
  • Meets system safety regulations requiring external fail safe
  • More customizable and accurate voltage trip points and reset output delay
  • Supervisor options with Manual Resets & Watchdog Timers simplify firmware, add reliability and are very easy to implement

Key Features

  • Watchdog Timer
  • - Signal required from within MCU (WDI) tWD or RST driven low
    - Designed to Detect faulty program execution
  • Voltage trip point
  • - Standard trip voltages available on all parts
    - Custom trip voltages available on some parts
  • Reset Delay
  • - Different available options for a reset delay
    - Some parts have custom options available
  • WDT Period
  • - Parts with watchdog timers have different tWD (period)
  • Low power (Typ < 1uA)
  • - Typically battery applications
    - Power sensitive with same reliability of a supervisor
  • Output type
  • - Push-Pull or Open-Drain
    - Active Low or High
    - Internal or external pull-up resistor (Open-Drain only)
  • Fast and accurate analog circuit simulations to help accelerate your hardware designs.
  • Choose from SPICE or piecewise linear SIMPLIS models, for accurate results in fast simulations
  • Downloadable simulation tool runs locally on your own PC without requiring an internet connection
Additional Information
Tabs / System Supervisors and Voltage Detectors