Maxim Integrated MAX6316LUK46CY Microprocessor Reset Circuit

The MAX6316LUK46CY is a compact, high-precision microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. Manufactured by Maxim Integrated, a leader in analog and mixed-signal engineering, this device provides excellent circuit reliability and low power consumption, making it ideal for portable and battery-operated applications.

This supervisory circuit features a factory-trimmed reset threshold voltage, set for a 4.6V reset threshold, which ensures that the µP resets properly during power-up, power-down, and brown-out conditions. The MAX6316LUK46CY comes in a space-saving 5-pin SOT-23 package, which is highly beneficial for systems where board space is at a premium.

One of the key features of the MAX6316LUK46CY is its ability to provide a reset signal to the µP for a minimum of 140ms after V_CC has risen above the reset threshold level. This guarantees that the µP has sufficient time to stabilize and initialize before resuming operation. The device also offers a debounced manual reset input which can be used to trigger a reset externally.

The low supply current of 1.5µA (typical) makes the MAX6316LUK46CY an energy-efficient choice for power-sensitive designs. This characteristic, combined with a wide operating voltage range of 1.2V to 5.5V, allows the device to be used in a variety of applications, from simple microcontroller circuits to complex systems with multiple supply voltages.

Additional features of the MAX6316LUK46CY include its immunity to short V_CC transients, which helps in maintaining stable operation without false resetting during volatile conditions. The circuit also has the capability to assert a reset signal if the watchdog timer has not been properly serviced, ensuring the system recovery from software lockup conditions.

In summary, the MAX6316LUK46CY from Maxim Integrated is a robust and reliable solution for system monitoring, offering precision power-supply monitoring and low power consumption in a miniature package. Its ease of integration into a wide range of applications makes it an indispensable component for ensuring the integrity and stable operation of digital systems.