Maxim Integrated MAX693EWE+T05 Microprocessor Supervisory Circuit

The Maxim Integrated MAX693EWE+T05 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 solution by significantly improving system accuracy and performance.

This supervisory circuit offers a variety of features to ensure that the microprocessor is reset to a known state during power failures or whenever the power supply falls below a predetermined threshold. The MAX693EWE+T05 includes functions such as power-on reset control, watchdog timer, battery backup switching, and write protection to safeguard volatile memory.

Key Features

• Power-On Reset: The device generates a reset signal when the power supply turns on, ensuring the microprocessor starts operating in a predictable state.
• Watchdog Timer: It helps in detecting and recovering from a microprocessor malfunction. The watchdog timer requires periodic servicing by the microprocessor within a preset timeout period to prevent system resets.
• Battery Backup Switching: In the event of a power failure, the circuit automatically switches to a backup battery to maintain power to the memory and real-time clock.
• Write Protection: It provides write protection for memory components, preventing inadvertent data corruption during low-voltage conditions or power transitions.
• Low Power Consumption: The MAX693EWE+T05 is designed for low power consumption, making it ideal for portable and battery-powered applications.
• Adjustable Reset and Watchdog Timeout: The reset and watchdog timeout periods can be set by external capacitors, allowing for customization based on specific system requirements.

Applications

The MAX693EWE+T05 is versatile and can be used in a variety of applications that require reliable system monitoring, such as:

• Computers and Servers
• Embedded Systems
• Industrial Controllers
• Portable/Battery-Powered Equipment

With its robust feature set and Maxim Integrated's reputation for quality, the MAX693EWE+T05 is an excellent choice for designers looking to enhance system reliability and prevent data loss due to power anomalies or processor errors.