raman00084
Full Member level 6
i am developing dspic board it operates at 5v level. my doubts is can i use 10k upllup resistor on pwm pins, spi pins , uart tx/rx pins and qei(A,B, INDEX). ?
regards
KALYAN
regards
KALYAN
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Use pull-up resistors to achieve exactly what? I presume you mean pull-up to 5V. Are you using a 3.3V or 5V dsPIC?
It only makes sense for input and open drain output pins. Some of the mentioned pins are push-pull outputs, so a pull-up resistor would be useless. If you are using pull-ups to 5V with a 3.3V dsPIC, take care that the respective pins are 5V-tolerant.
Yes, in case of the outputs. But this point won't be particularly related to 5V operation. In wonder if the original post is just unclear or intentionally mixes unrelated design objectives?It would make sense if the OP is trying to maintain a high state on the output until the processor starts up, regardless of whether they're push-pull outputs or not.
Yes, in case of the outputs. But this point won't be particularly related to 5V operation. In wonder if the original post is just unclear or intentionally mixes unrelated design objectives?