0 0 PCA time base runs at (micro oscillator frequency)/6
0 1 PCA time base runs at (micro oscillator frequency)/2
1 0 PCA time base runs at Timer 0 overflow
1 1 PCA time base runs at external clock on port 1 pin 2 (ECI)
(maximum¼micro oscillator frequency/4)
ECF¼1 (enables counter overflow interrupt, enables CF bit in CCON SFR)
¼0 (disables counter overflow interrupt)
time base runs at