The IMP811JEUS is a microprocessor supervisory circuit designed to monitor the power supply voltage and provide reset signals to microprocessors and microcontrollers. This device ensures that the microprocessor starts up correctly and operates reliably by preventing execution during power-up, power-down, and brownout conditions.

Applications

• Microprocessor-based systems
• Microcontroller-based systems
• Embedded systems
• Industrial control equipment
• Consumer electronics

Features

• Precision voltage monitoring
• Power-on reset generation
• Watchdog timer (optional)
• Manual reset input
• Active-low reset output
• Small package size

Benefits

• Improved system reliability
• Prevention of erroneous code execution
• Simplified reset circuitry
• Reduced component count
• Cost-effective solution

Additional Details

The IMP811JEUS monitors the power supply voltage and asserts a reset signal when the voltage falls below a predefined threshold. The reset signal remains asserted for a specified reset timeout period after the voltage returns above the threshold, ensuring that the microprocessor has sufficient time to initialize properly. The device may include an optional watchdog timer, which monitors the microprocessor's activity and asserts a reset signal if the microprocessor fails to execute code within a specified time period. A manual reset input allows for external reset of the microprocessor. The active-low reset output is compatible with most microprocessors and microcontrollers. The device is typically packaged in a small surface-mount package, such as SOT-23 or SC-70. Consult the IMP, Inc. datasheet for the IMP811JEUS for detailed information on the voltage threshold, reset timeout period, watchdog timer parameters, and electrical characteristics. Proper decoupling capacitors are essential to minimize noise and ensure stable operation. The operating temperature range is usually between -40°C and 85°C. The specific voltage threshold is a crucial parameter to consider when selecting this supervisory circuit.