crankler
Junior Member level 2
i will be using adc0809 analog-to-digital converter. it needs an external clock and i saw this pic from crankshaft:
View attachment adc setup.bmp
the microcontroller's oscillator can provide the adc clock but it needs to be divided by four 74ls74. i was just confused with the connection because the ic have a lot of pins:
View attachment 74ls74.bmp
in this specific application, what should i do with the CLR and PR pins? should i leave them alone or connect it to the +5V or ground?
View attachment adc setup.bmp
the microcontroller's oscillator can provide the adc clock but it needs to be divided by four 74ls74. i was just confused with the connection because the ic have a lot of pins:
View attachment 74ls74.bmp
in this specific application, what should i do with the CLR and PR pins? should i leave them alone or connect it to the +5V or ground?