Maxim Integrated MAX6712SEXS Microprocessor Supervisor

The Maxim Integrated MAX6712SEXS is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies and µP activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V-powered circuits.

This compact supervisor IC is ideal for use in a wide range of applications, including computers, controllers, intelligent instruments, and portable battery-powered electronics. Its primary function is to ensure that the µP starts up in a known state and to prevent code execution errors during power-up, power-down, or brownout conditions.

The MAX6712SEXS features a precision voltage monitor that tracks the supply voltage (VCC) and asserts a reset signal if the VCC falls below the factory-set reset threshold. The reset output remains asserted for a minimum reset timeout period after VCC rises above the reset threshold, providing a guaranteed reset signal duration which can be crucial for proper system recovery.

Key features of the MAX6712SEXS include:

• Factory-set reset threshold voltages tailored to 5V-powered systems
• Minimum power-on reset pulse width of 140ms ensures reliable system reset
• Low supply current of 12µA (typical) which is ideal for power-sensitive applications
• Debounced manual reset input for triggering a system reset with an external pushbutton
• Active-low RESET output which is guaranteed to be in the correct state for VCC down to 1V
• Compact 4-pin SOT143 package, suitable for space-constrained applications

With its built-in glitch immunity, the MAX6712SEXS will not issue a reset pulse when VCC experiences fast transients. Its robust design ensures that the reset output will remain in the active state until VCC has returned to a stable condition that is safe for processor operation, thereby enhancing system reliability.

Overall, the Maxim Integrated MAX6712SEXS is a versatile and essential component for any system requiring robust monitoring of its power supply and processor activity to ensure smooth and reliable operation.