• Need two 89C51RE2SLSUM MCUs!
    We are redoing an 87C51FB design with the 87C51MC2, which is readilly available from DigiKey. The problem is, the -MC2 is an OTP part, and we have a lot of code development to do yet. This is going to...
  • Xdata Variables not accessable
    Dear Experts, I am a newbie to Keil and using the PK51 development kit with Rev:9.03 to develop firmware for my CC2430 controller. The problem I am seeing is, when ever I create a large array (ex:...
  • How to access the XDATA
    My external EEPROM (I2C) is AT24C32. In our code the XDATA is about 400Bytes. How to seperate the Code (program) memory and Data memory, how to access the XDATA.
  • xdata access, how ?
    Dear sir, i am is a student in physic department,i use uVision IDE for 8051 ver 6.20c, build a single board computer, with core is AT89S52,one Dallas RTC 12C887,and an 8255 PPI, both (RTC & PPI) connected...
  • xdata memory
    What are the advantages in useing xdata memory? Why would you use it? How do you use it?