• State Not Answered
  • Locked Locked
  • Replies 7 replies
  • Subscribers 21 subscribers
  • Views 1009 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

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

My P3^7 remains low even I set it

Maaz Qazi

I am using 89C51ED2, my code is executing fine but the P3^7 does not set high on reset and even I kept it high in code. Why is this occuring?

Parents
  • 0 in reply to erik malund

    I had removed the chip 4052 which is connected with ED2 but found the pin low. The simulator is showing the state of the P3^7 as high. And this problem exist not only in one hardware, but in all of my hardwares. May be this is the problem of 89C51ED2 Dip package, as I've used 89C51ED2 in PLCC44 package it works fine.
    Is this problem related with the built in XRAM or XEEPROM memory? Please help me.

    Maaz Qazi

Reply
  • 0 in reply to erik malund

    I had removed the chip 4052 which is connected with ED2 but found the pin low. The simulator is showing the state of the P3^7 as high. And this problem exist not only in one hardware, but in all of my hardwares. May be this is the problem of 89C51ED2 Dip package, as I've used 89C51ED2 in PLCC44 package it works fine.
    Is this problem related with the built in XRAM or XEEPROM memory? Please help me.

    Maaz Qazi

Children