The MIC810LU is a microprocessor reset circuit manufactured by Micrel (now Microchip Technology). It is designed to monitor the supply voltage of a microprocessor and provide a reset signal when the voltage falls below a specified threshold. This ensures that the microprocessor starts in a known state and prevents erratic behavior due to brownouts or power failures.

Applications:

• Microprocessor Systems
• Embedded Systems
• Power Monitoring
• Industrial Control Systems
• Automotive Electronics

Features:

• Supply Voltage Monitoring: Monitors the supply voltage of the microprocessor.
• Reset Output: Provides a reset signal when the supply voltage falls below the threshold.
• Precision Threshold: Accurate threshold voltage for reliable detection of undervoltage conditions.
• Open-Drain Output: Open-drain output requires a pull-up resistor.
• Small Package: Available in a small package for space-constrained applications.
• Low Quiescent Current: Minimizes power consumption.

Benefits:

• Reliable Reset: Ensures a reliable reset of the microprocessor during power-up or brownout conditions.
• Prevents Data Corruption: Prevents data corruption and erratic behavior caused by low voltage.
• Simplified Design: Simplifies system design by providing a dedicated reset function.
• Space Saving: Small package minimizes PCB footprint.

Additional Details:

The MIC810LU requires a pull-up resistor on the reset output. The value of the pull-up resistor depends on the application and the load on the reset line. Proper decoupling is recommended for stable operation. The reset threshold voltage is a key parameter and should be selected based on the microprocessor's operating voltage requirements.

The datasheet provides detailed information on the device's electrical characteristics, timing specifications, and application circuits. It is crucial to consult the datasheet for proper design and implementation. The datasheet specifies the threshold voltage, reset timeout period, and operating voltage range.