P3 of CY8C4245AXI-483 always High Z | Cypress Semiconductor
P3 of CY8C4245AXI-483 always High Z
I've got a small mystery that I can't solve.
No matter what I do, I can not set P3 pin 12 as an output low. I thought the IC may be damaged, but the same problem shows up on a new board.
To test, I created a blank project, created a slow toggling PWM, and connected the output of the PWM to a pin that sinks current to a LED P3, and the same PWM output to P3.
The LED blinks and has a strong high / low output, but P3 is high z.
P3 and P3 are the debug pins. P3 is just to the left of these two debug ports and P3 is just to the right.
Having the 10-pin MiniProg3 connected or physically removed doesn't affect it.
My C code has one line: PWM_1_Start();
Any suggestions? Are there any errata that I've missed?