• accessing eram
    I would like to know know how to access the eram in the MCU at89c5131?
  • how to access ERAM in AT89LP51RD2
    How to access ERAM(2 KB on chip memory) in AT89lp51rd2? I have added following code to STARTUP.A51 file. XDATALEN EQU 7FFH ANL AUXR1,#NOT 02H ; AUXR1/Bit 1 (clear to 0 to enable on-chip XRAM)....
  • ERAM and P2
    I am going to use the Philips P89C668 which has 64k flash and 8k ERAM. This allow me to use P0 and P2 for I/O since no external memory chip will be connected. However, if the compiler generates code using...
  • about ERAM
    Hi, Where is ERAM class located? I know that ERAM is copied to RAM at startup but before it is located at ROM, is it RIGHT? But I don't know where in the ROM and its size, can you help me with this...
  • OnChip ERAM and External RAM access from C51
    I am using AT89C5131 uC with hardwaired external 32K RAM from address 0x0000 to 0x07fff. I am able to read/write OnChip 1K RAM and External connected RAM by toggling EXTRAM Bit in AUXR register. ...