Microchip Technology's MIC810LYC3-TR: A Robust Microprocessor Reset Circuit

The MIC810LYC3-TR from Microchip Technology is a high-precision microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant level of reliability to systems that require a high degree of operational consistency and longevity. This tiny component, packaged in a space-saving 3-Pin SOT-23, is an ideal solution for portable electronics where space is at a premium.

This device is engineered to assert a reset signal whenever the V<sub>CC supply voltage declines below a preset threshold, ensuring that the microprocessor is reset to a known state during power-up, power-down, and brown-out conditions. The reset signal remains asserted for a period of 140ms (min) after V<sub>CC has risen above the reset threshold level, providing ample time for the system to stabilize.

The MIC810LYC3-TR boasts an impressive accuracy of ±2.5% at room temperature and ±5% across the full temperature range of -40°C to +85°C. This precision ensures reliable operation even under varying environmental conditions. The low supply current of 6.5µA (typical) makes this device an excellent choice for battery-operated applications where power conservation is crucial.

An active-low RESET output is provided, which is guaranteed to be in the correct state for V<sub>CC down to 1V. This makes the MIC810LYC3-TR highly versatile for systems operating at low voltages. Additionally, the device is designed with immunity to short V<sub>CC transients, further enhancing its robustness in unpredictable power environments.

Applications for the MIC810LYC3-TR are diverse and include computers, controllers, intelligent instruments, critical µP and µC power monitoring, and portable/battery-powered equipment. Its simple design allows for straightforward integration into existing and new systems alike, providing an essential layer of protection for sophisticated electronic components.

Overall, the MIC810LYC3-TR is a testament to Microchip Technology's commitment to providing innovative, reliable, and high-quality components for the electronics industry. Its integration into your system can be the determining factor in achieving the resilience and consistency required for your application's success.