I have a chip that can provide its own clock by connecting one of its outputs to one of its inputs. But the datasheet states the two pins must be momentarily grounded after powerup to initialize the chip and I want to learn how I can do this with an R/C network if possible.
After experimenting I found it's ok for the two pins to start out grounded at power up and then when un-grounded the chip runs. So I picked values for R and C and hooked them up, but it does not work since that way the pins end up at +5v and the chip isn't running.
I need a way to ground the pins for a moment and then leave them connected only to each other. My next thought was to use the R/C network to switch a transistor but I don't think one can switch from ground to 'nothing'. How about connecting the output via a diode to the input and seeing if my R/C network grounding just the input would work? But that deviates from the datasheet, and I think the +5v going into the input is my problem anyway.
Any thoughts would be appreciated!
After experimenting I found it's ok for the two pins to start out grounded at power up and then when un-grounded the chip runs. So I picked values for R and C and hooked them up, but it does not work since that way the pins end up at +5v and the chip isn't running.
I need a way to ground the pins for a moment and then leave them connected only to each other. My next thought was to use the R/C network to switch a transistor but I don't think one can switch from ground to 'nothing'. How about connecting the output via a diode to the input and seeing if my R/C network grounding just the input would work? But that deviates from the datasheet, and I think the +5v going into the input is my problem anyway.
Any thoughts would be appreciated!