Low Voltage Supervisory Circuit with Watchdog, Manual Reset and Active-High, Push-Pull Reset Output
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Product Details

The ADM6821-ADM6825 are supervisory circuits which monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power-on-reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button, through a manual reset input. The three parts feature different combinations of watchdog input, manual reset input and output stage configuration, as shown in table 1.

Each part is available in a choice of 9 reset threshold options ranging from 1.58V to 4.63V. The reset and watchdog timeout periods are fixed at 140ms (min) and 1.6s (typ), respectively.

The ADM6821-ADM6825 are available in 5-lead SOT-23 packages and typically consume only 3µA, making them suitable for use in low power portable applications.

Product Lifecycle

checked Pre-Release

This product is new and engineering validation may still be underway. Quantities may be limited and design specifications may change while we ready the product for release to production.

Reference Materials

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

ADM6821 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints



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