The MAX699CPA+ from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V-powered circuits.

Key Features

• Voltage Monitoring: This device ensures that the microprocessor is reset to a known state during power failures or whenever the voltage from the power supply drops below a predetermined threshold. The reset threshold is factory-set to 4.65V, suitable for +5V-powered systems.
• Power-On Reset: The MAX699CPA+ generates a reset pulse when power is first applied. This reset signal ensures that the µP starts operating in a known state.
• Manual Reset: A manual reset feature allows for a reset to be asserted by a pushbutton or other logic signal, providing additional system control flexibility.
• Watchdog Timer: An onboard watchdog timer can be used to monitor microprocessor activity. If the µP fails to strobe the watchdog input within a preset timeout period, a system reset is asserted, ensuring system reliability and recovery from a software lockup.
• Backup Battery Switchover: In the event of a power failure, the MAX699CPA+ automatically switches to a backup battery, maintaining power to the memory and real-time clock functions.

Applications

Thanks to its versatile features, the MAX699CPA+ is ideal for use in a broad range of applications, including:

• Computers and Controllers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Critical µP Power Monitoring

Package and Quality

The device comes in an 8-pin PDIP package, which is easy to integrate into a variety of circuit boards. Maxim Integrated ensures high-quality production and reliability of the MAX699CPA+, making it a trusted choice for critical system monitoring solutions.

For detailed specifications and application notes, refer to the official product page and datasheets provided by Maxim Integrated.