Maxim Integrated MAX810MEUR Microprocessor Reset Circuit

The Maxim Integrated MAX810MEUR is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a crucial function in ensuring system stability by resetting the microprocessor during power-up, power-down, and brown-out conditions. The device is tailored to maintain the integrity of the system by asserting a reset signal whenever the VCC supply voltage drops below a preset threshold, ensuring that the µP and its peripherals are reset to a known, stable state.

With its low supply current of only 17µA (typical), the MAX810MEUR is an energy-efficient solution that contributes to the overall power conservation of the system it is implemented in. It features an active-low reset output, which remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level. This timeout ensures that the system has sufficient time to stabilize before the processor starts its operation.

The device comes in a small SOT-23 package, making it ideal for space-constrained applications. It operates over a wide voltage range, from 1.2V to 5.5V, which allows it to be used in various systems with different power requirements. The MAX810MEUR has a factory-trimmed reset threshold at 4.63V, which is suitable for 5V-powered systems.

Safety and reliability are key aspects of the MAX810MEUR, as it features an immunity to short VCC transients, ensuring that the device does not generate false resets during brief glitches on the power supply. This characteristic is particularly important in environments where high reliability is essential, such as in industrial controls, embedded systems, and portable consumer electronics.

Overall, the Maxim Integrated MAX810MEUR is a vital component for system designers looking to enhance the reliability and performance of their microprocessor-based systems. Its low power consumption, compact form factor, and robust feature set make it a popular choice in the market.