Maxim Integrated MAX696CPE+ Microprocessor Supervisory Circuit

The MAX696CPE+ from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor the power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with +5V-powered µPs.

This supervisory circuit ensures that the µP is only operational with stable power, by providing a reset signal to the µP during power-up, power-down, and brown-out conditions. The reset signal remains asserted until the system voltage reaches the reset threshold level and stays above it for the reset time-out period. This mechanism ensures that the µP starts only in the most stable condition, preventing any malfunction due to power issues.

The MAX696CPE+ features a variety of functionalities that make it a versatile choice for system management. The device includes a watchdog timer that periodically checks for system malfunctions. If the µP does not provide a watchdog input within the preset timeout period, the MAX696CPE+ assumes a system failure and issues a system reset. This feature is crucial for systems that require high reliability and autonomous recovery from a failure.

Additionally, the MAX696CPE+ comes with a manual reset input that allows for a system reset to be triggered with an external push-button or logic signal, providing an extra layer of control. The reset output is available in both active-high and active-low configurations, making it compatible with various µP and logic systems.

The device is housed in a 16-pin DIP package, ensuring easy integration into a wide range of applications. With its wide operating temperature range, the MAX696CPE+ is suitable for use in environments with extreme temperature conditions.

Overall, the Maxim Integrated MAX696CPE+ is a robust solution for system management, offering features that enhance the reliability and performance of µP-based systems. Its ease of use and comprehensive functionality make it an ideal choice for designers looking to improve system integrity with minimal additional complexity.