DS1232LPSN

The DS1232LPSN from Analog Devices is a low-power micro-monitor supervisor chip designed to monitor critical conditions for microprocessors. It provides accurate power supply monitoring with selectable thresholds of 5% or 10% and features a watchdog timer function with adjustable timeout settings. The device also includes pushbutton reset control with debouncing.

This supervisor IC is available in a 16-SOIC package and operates over an industrial temperature range of -40°C to 85°C. Its primary functions include halting and restarting an out-of-control microprocessor, automatically restarting after a power failure, and monitoring for external override conditions. The output signals are open drain and push-pull, supporting both active high and active low reset.

With a quiescent current of only 50 µA, the DS1232LPSN is suitable for low-power applications. It ensures system stability by keeping reset signals active for a minimum of 250 ms after a power failure or reset event, allowing the power supply and processor to stabilize.