Contents
How does a voltage supervisor work?
A supervisor/reset IC monitors a supply voltage and resets or turns off another device like a microprocessor if the supply voltage is low. These devices usually have a programmable output delay to prevent the system from returning from reset before the supply voltage is stable.
What is the purpose of reset pin in digital ICS?
Main purpose of reset pin is to monitor the power fluctuations supplied to microcontroller . When ever power goes above / below threshold voltage reset circuitry triggers an active low signal on Reset pin . Reset also can be performed by user to reset the state of microcontroller .
What does a Voltage Supervisor do in a circuit?
A voltage supervisor is a device that monitors or “supervises” a voltage rail within a system. Voltage supervisors can either detect for undervoltage events (when a voltage falls below a certain threshold) or overvoltage events (when a voltage rises above a certain threshold).
When does a supervisory circuit reset the protected circuit?
Supervisory circuits that specifically focus on voltage regulation are often sold as supply voltage supervisors and will reset the protected circuit when the voltage returns to operating range.
When to use a supervisory circuit in a microcontroller?
CONCLUSIONS Using supervisory circuits can protect microcontroller based systems from a number of power-related prob- lems. If you are experiencing problems in your system that are not making sense, it may be power related and if so, it may be beneficial to add a supervisory device to the system.
What kind of voltage supervisors does Texas Instruments use?
The Texas Instruments (TI) supervisors portfolio includes low-power, small-size, high-accuracy, watchdog timer, wide input voltage, multichannel and push-button reset ICs to help engineers meet design requirements. This e-book provides an in-depth overview of voltage supervisors and their applications.