It is often desirable to disable the watchdog timer during the system development phase or in troubleshooting a system in the field. In addition, compared to pin-compatible devices available from Maxim Integrated Products, the IMP devices have reduced supply current requirements by 60 percent. Maximum supply current is a low 140 microamperes. The new IMP supervisor family offers several functional options. Designed to monitor a 5 volt power supply, 4.65 volt and 4.4 volt threshold devices are offered.
All devices have a manual reset input.
The IMP705, IMP706, and IMP813L supervisors monitor the power supply and battery in microprocessor and digital systems. The IMP706 and IMP708 generate a reset for supply voltages below 4.40 volts. IMP811 and IMP812 supervisors monitor the power supply of a microprocessor or microcontroller. A supervisor chip prevents the microprocessor or microcontroller from executing software instructions or enabling hardware incorrectly because of low power supply voltage. The IMP supervisors were designed for low current consumption to support battery operated systems.