DESCRIPTION
The DS1232LP/LPS Low Power MicroMonitor Chip monitors three vital conditions for a
microprocessor: power supply, software execution, and external over-ride. First, a precision temperaturecompensated
reference and comparator circuit monitors the status of VCC. When an out-of-tolerance
condition occurs, an internal power-fail signal is generated which forces reset to the active state. When
VCC returns to an in-tolerance condition, the reset signals are kept in the active state for a minimum of
250 ms to allow the power supply and processor to stabilize.

FEATURES
Super-low power version of DS1232
50 μA quiescent current
Halts and restarts an out-of-control
microprocessor
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Accurate 5% or 10% microprocessor power
supply monitoring
8-pin DIP, 8-pin SOIC or space saving μ-SOP
package available
Optional 16-pin SOIC package available
Industrial temperature -40°C to +85°C
available, designated N