• State Not Answered
  • Locked Locked
  • Replies 8 replies
  • Subscribers 22 subscribers
  • Views 1164 views
  • Users 0 members are here
Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

unused pins in ADUC842/ADUC843

Mayuri Ghosalkar

I am using ADUC842/ADUC843 Micro controller.
how should I connect the unused pins?

Regards,
Mayuri

Parents Reply Children
  • 0 in reply to Mayuri Ghosalkar

    so I cant leave them floating.
    if mains powered, write a '0' to them and they will be 'shorted' to ground
    if you absolutotally have to do something externally, verify that your derivative does the standard 'reset state' of the pins, stay away from those pins in your code and tie them directly to Vcc.
    if you are 'afraid' of the above tie them through a resistor to Vcc.

    anyhow, what does this have to do with Keil siftware, for '51 hardware 8052.com is the place

    Erik

  • 0 in reply to ²erik malund

    I do not know the ADUC and thus
    if mains powered, write a '0' to them and they will be 'shorted' to ground and, if your derivative has configurable ports, configure them as input/open drain/quasi bi-directional.

    if you absolutotally have to do something externally, verify that your derivative does the standard 'reset state' of the pins quasi bi-directional and '1', stay away from those pins in your code and tie them directly to Vcc.

    if you are 'afraid' of the above and the conditions are as above tie them through a resistor to Vcc.

    Erik