The MC14541B programmable timer cosists of a 16-stage biary couter, a itegrated illator for use wi a exteral capacitor ad two resistors, a automatic power-o reset circuit, ad output cotrol logic. Timing is iitialized by turig o power, whereupo e power-o reset is eabled ad iitializes e couter, wii e specified V rage. Wi e power already o, a exteral reset pulse ca be applied. Upo release of e iitial reset commad, e illator will illate wi a frequecy determied by e exteral RC etwork. The 16-stage couter divides e illator frequecy (f wi estage frequecy beig f/2.
Available Outputs 28, 210, 213 or 216
Increments on Positive Edge Clock Transitions
Built-in Low Power RC Oscillator (+/- 2% accuracy over temperature range and +/- 20% supply and +/- 3% over processing at < 10 kHz)
Oscillator May Be Bypassed if External Clock Is Available (Apply external clock to Pin 3)
External Master Reset Totally Independent of Automatic Reset Operation
Operates as 2n Frequency Divider or Single Transition Timer