Newbie here, need help
I have a count-down timer with the 4029 connected to a 4511 cascading with another 4029. I set up the circuit to my knowledge but the counter does not actually count but stays on 00.
The problem most likely is that i have a lot of the pins on the 4029 free and i have no idea where they should go.
they include:
Pin1: Present Enable
Pin 3: Pam Input 4
Pin 4: Jam Input 1
Pin 5: Clock enable
Pin 9: Binary/Decade (i know this has to go either to the postive or
negative but i don't know which rail for which
setting)
Pin 10: Up/Down (same with this one)
Pin 12/13: Jam inputs (again)
i've had a look at document sheets and stuff about this chip but dont get a thing!, if anyone could help me, it would be much appreciated, thanks
I have a count-down timer with the 4029 connected to a 4511 cascading with another 4029. I set up the circuit to my knowledge but the counter does not actually count but stays on 00.
The problem most likely is that i have a lot of the pins on the 4029 free and i have no idea where they should go.
they include:
Pin1: Present Enable
Pin 3: Pam Input 4
Pin 4: Jam Input 1
Pin 5: Clock enable
Pin 9: Binary/Decade (i know this has to go either to the postive or
negative but i don't know which rail for which
setting)
Pin 10: Up/Down (same with this one)
Pin 12/13: Jam inputs (again)
i've had a look at document sheets and stuff about this chip but dont get a thing!, if anyone could help me, it would be much appreciated, thanks