MIC810SUY-TR

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The MIC810SUY-TR is a member of the Microchip Family of PMIC (Power Management IC) products, specifically belonging to the Supervisors category. This PMIC provides comprehensive fault protection and reset circuit features, making it ideal for a wide variety of applications. This document will provide a brief introduction to the MIC810SUY-TR, including its application field and working principle.

The MIC810SUY-TR is designed for automotive and industrial applications. It is capable of providing circuit protection and reset functions for controlling digital, analog, and mixed-signal circuits. The device is ideal for applications such as power monitoring, system reset, and data protection. This device can also be used in a variety of microcontroller- (MCU-) based systems.

The MIC810SUY-TR is a microprocessor supervisory circuit that provides several safety features. These features include reset, watchdog timer, power-on reset, power-fail comparator, low-voltage detect, reset timeout, and available pins for open-drain output control. The reset timeout feature helps prevent system lockup by resetting the system if it fails to restart after an initial reset condition. The low-voltage detect feature is able to detect power-on reset within specified limits. The open-drain pins are also able to control an external circuit, such as an LED, enabling visual indication of system condition.

The MIC810SUY-TR utilizes a threshold voltage of 2.6V to sense the power-on reset condition. This threshold voltage is controlled by an internal voltage reference and external precision resistor divider network that are used to set the reset threshold voltage. The MIC810SUY-TR will issue a reset once it detects the input voltage is lower than the threshold voltage for a specified minimum period of time. This output reset signal is active low and will remain asserted until the device detects the powered up voltage.

The watchdog timer provided by the MIC810SUY-TR enables systems to detect unexpected system events. If the watchdog timer is not reset within the specified timeout period, the device will generate a reset signal that can be used to restart the system. The timer can be set using the external resistor and capacitor. The MIC810SUY-TR can also be configured in an event window that allows it to reset the system when input voltage is higher than the programmed threshold.

The MIC810SUY-TR also provides power-fail comparator feature. This feature monitors the input voltage, and will assert a reset signal when the input voltage drops below the set power-fail threshold. The power-fail comparator can be used to alert the MCU to the fact that power is insufficient to maintain normal operations, thereby allowing the software to gracefully shutdown operations and reset the system.

The MIC810SUY-TR safety features help to protect systems from potential damage due to system errors and power glitches. The reset function helps to prevent system lockup by resetting the system when it fails to restart after an initial reset condition. The watchdog timer provides an additional layer of protection and helps to detect unexpected system events that may cause system lockup. The power-fail comparator monitors the input voltage, and will assert a reset signal if the input voltage is below the specified threshold. The open-drain pin control feature can also be used to indicate system status, further enhancing safety and reliability.

In summary, the MIC810SUY-TR is a great choice for a variety of applications requiring comprehensive fault protection and reset circuit features. The device is able to provide protection against system errors, shutdown the system when necessary, and visually indicate system status. By utilizing this device, designers are able to create reliable systems that maximize system availability, enhance user experience and improve overall system reliability.

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