GENERAL DESCRIPTION

The NE56604-42 is designed to generate a reset signal at a threshold voltage of 4.2 V for a variety of microprocessor and logic systems. Accurate reset signals are generated during momentary power interruptions, or whenever power supply voltages sag to intolerable levels. The NE56604-42 has a built-in Watchdog Timer to monitor the microprocessor and ensure it is operating properly. Any abnormal system operations due to microprocessor malfunctions are terminated by a system reset generated by the Watchdog. The NE56604-42 has a Watchdog monitoring time of 100 ms (typical).

FEATURES

• Both positive and negative logic reset output signals are available

• Accurate threshold detection

• Internal power-on reset delay

• Internal Watchdog timer programmable with external resistor

• Watchdog monitoring time of 100 ms (typical)

• Reset assertion with VCC down to 0.8 VDC (typical)

• Few external components required.

APPLICATIONS

• Microcomputer systems

• Logic systems.