资 源 简 介
The X4043/45 combines four popular funcTIons,Power-on Reset Control, Watchdog TImer, SupplyVoltage Supervision, and Block Lock Protect SerialEEPROM Memory in one package. This combinaTIonlowers system cost, reduces board space requirements,and increases reliability.Applying power to the device acTIvates the power-onreset circuit which holds RESET/RESET active for aperiod of time. This allows the power supply and oscillatorto stabilize before the processor can execute code.The Watchdog Timer provides an independent protectionmechanism for microcontrollers. When the microcontrollerfails to restart a timer within a selectabletime out interval, the device activates theRESET/RESET signal. The user selects the intervalfrom three preset values. Once selected, the intervaldoes not change, even after cycling the power.
