Maxim Integrated MAX690AEPA Microprocessor Supervisory Circuit

The MAX690AEPA is a highly-reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to provide essential monitoring and control functions for microprocessor systems. This precision device is engineered to maintain system integrity by monitoring the power supply and providing a reset signal to the µP during power-up, power-down, and brown-out conditions. The MAX690AEPA ensures that the µP starts up in a known state and prevents code execution errors during low-voltage conditions.

Key Features:

• Voltage Monitoring: The MAX690AEPA keeps a close watch on the system power supply, offering a reset threshold voltage typically at 4.65V, which is suitable for 5V-powered systems.
• Power-On Reset: It generates a reset signal when the power supply turns on, ensuring that the µP initializes correctly every time the system powers up.
• Manual Reset Input: An additional feature includes a manual reset input that allows for an external trigger to reset the system, providing an extra layer of control.
• Low Power Consumption: With a typical supply current of only 35µA, this device is ideal for power-sensitive applications.
• Backup Battery Switchover: In the event of a primary power failure, the MAX690AEPA includes a backup battery switchover feature that ensures uninterrupted power to the memory.
• Watchdog Timer: To prevent system hangs and runaway processes, the MAX690AEPA incorporates a watchdog timer that resets the µP if it fails to stroke the watchdog within a preset time interval.

Applications:

The MAX690AEPA is versatile and can be used in a wide range of applications, including:

• Microprocessor systems
• Computers and controllers
• Battery-powered equipment
• Intelligent instruments
• Portable devices

With its robust feature set and Maxim Integrated's reputation for quality, the MAX690AEPA is an excellent choice for designers looking to enhance the reliability and performance of their microprocessor-based systems. The device comes in an 8-pin DIP package, making it easy to integrate into existing designs.

For detailed specifications and application notes, or to order samples, visit Maxim Integrated's official website or contact an authorized distributor.