'Power Off PIC Happenings'
Here's a question that somebody probably has a real quick answer to:
I have a circuit in which I independantly power a PIC (and it's reset line)
with respect to the components that it interfaces to. The Power is
controlled to the PIC via an Opto-isolator and _MCLR is isolated by a
forward biased diode (the PIC is in an ISP Programmer attached to the
One of the lines the PIC is attached to is an LED, connected to a Current
Limiting Resistor and Vcc. The PIC sinks the LED current.
The problem comes in when I turn off the Power and _MCLR to the PIC (Ground
is still connected) - the LED lights! Is there anything that I can do to
eliminate the current path?
"I don't do anything that anybody else in good physical condition and
unlimited funds couldn't do" - Bruce Wayne
part 0 96 bytesLet the PIC source the LED !