ADM6328-27ARTZ-R7: Microprocessor Supervisory Circuit

The ADM6328-27ARTZ-R7 by Analog Devices Inc. is a highly reliable microprocessor supervisory circuit designed to monitor power supplies in microprocessor and digital systems. It provides a precise, factory-trimmed V_CC reset threshold and timing features to ensure that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions.

This supervisory circuit comes in a compact, 3-lead SOT-23 package, making it an ideal choice for space-constrained applications. The ADM6328 series ensures system reliability through its watchdog timer and manual reset features, which provide additional layers of system protection.

Key Features:

• Reset Output: The ADM6328-27ARTZ-R7 offers an active-low reset output, which remains asserted for a minimum of 140 ms after V_CC has risen above the reset threshold level. This ensures that the system has sufficient time to stabilize before the processor starts up.
• Factory-Programmed V_CC Reset Threshold: The reset threshold voltage of 2.7V is precisely set by the factory, ensuring accurate monitoring without the need for external components.
• Low Power Consumption: With a low supply current of typically 3.5 µA, this device is suitable for power-sensitive applications.
• Watchdog Timer: The built-in watchdog timer improves system safety by monitoring the microprocessor activity and initiating a system reset if necessary.
• Manual Reset Input: A manual reset input allows for an external trigger to initiate a system reset, providing an additional level of control.
• High Supply Voltage Tolerance: The device can tolerate a wide supply voltage range, operating from 1.2V to 5.5V, which makes it versatile for various applications.

The ADM6328-27ARTZ-R7 is a robust solution for managing the reset function in microprocessors, microcontrollers, and other digital systems. Its precision and reliability make it an essential component for ensuring the correct operation of electronic devices, particularly in critical applications where system stability is paramount.

Whether used in portable devices, embedded systems, or industrial control units, the ADM6328-27ARTZ-R7 from Analog Devices Inc. provides the performance and reliability needed to maintain system integrity through all conditions.