Maxim Integrated MAX6328UR29-T Microprocessor Reset Circuit

The MAX6328UR29-T is a precision, low-power microprocessor (µP) reset circuit device from Maxim Integrated designed to monitor power supplies in digital systems. It provides a significant layer of protection by ensuring that the µP and its peripherals are reset properly during power-up, power-down, or brown-out conditions. This particular model is tailored to maintain system integrity and prevent software glitches through its reliable reset output.

Featuring a factory-set reset threshold voltage of 2.93V, the MAX6328UR29-T caters to systems that operate around this voltage level. It is particularly suited for portable and battery-powered equipment, such as PDAs, laptops, and other mobile devices, where power efficiency and conservation are critical. The device's low supply current of only 1µA (typical) minimizes the load on the battery, thereby extending the operational life of the product it is used within.

The reset output from the MAX6328UR29-T is guaranteed to be in the correct state for VCC down to 1V, which ensures that the system's microprocessor will restart in a known state once the supply voltage returns to an acceptable level. The reset signal is maintained for a minimum of 140ms after VCC rises above the reset threshold, providing ample time for the system to stabilize.

The device is available in a compact SOT23 package, which is ideal for space-constrained applications. The MAX6328UR29-T is also characterized for operation over a wide temperature range of -40°C to +85°C, ensuring reliable performance across various environmental conditions.

For design flexibility, the MAX6328UR29-T offers additional features such as an active-low RESET output, which allows it to interface easily with other logic components. Moreover, its no external components requirement simplifies the design process, making it an easy-to-implement solution for enhancing system reliability.

In summary, the Maxim Integrated MAX6328UR29-T is a robust, low-power reset circuit that serves as an essential component for maintaining the health and stability of microprocessor-based systems. Its precision voltage monitoring and power conservation features make it an excellent choice for designers looking to incorporate a reliable reset mechanism into their applications.