• The internal expanded RAM(XDATA) on AT89C51RB2 cannot be used
    Hello everybody, I am testing a program for AT89S54(AT89C51RB2) with uVision2.As you konwn,this chip has 768 bytes expanded RAM(XRAM).I want to use the XRAM for my program,but the XRAM space cannot be...
  • The internal expanded RAM(XDATA) on AT89C51RB2 cannot be used
    Hello everybody, I am testing a program for AT89S54(AT89C51RB2) with uVision2.As you konwn,this chip has 768 bytes expanded RAM(XRAM).I want to use the XRAM for my program,but the XRAM space cannot be...
  • No expanded RAM access with P89V664
    I am unable to access expanded RAM, despite the following: I set AUXR to 2 during startup; PSEN is tied high; all expanded RAM access is via DPTR. Nonetheless, using my little LCD program,...
  • No expanded RAM access with P89V664
    I am unable to access expanded RAM, despite the following: I set AUXR to 2 during startup; PSEN is tied high; all expanded RAM access is via DPTR. Nonetheless, using my little LCD program,...
  • Can I expand additional code & data memory for P89LPC932 ?
    In micro-Vision IDE attached to LPC900 Development Studio, the Device/Target menu shows the possibility of expanding off-chip code memory(EPROM) & off-chip Xdata memory(RAM). How to realize it? Does P89LPC932...