• EXternal Memory.
    I am using Cygnal controller C8051F005 which has on chip external 2K memory. I defined one array as follows. xdata char mydata[1440]_at_0x97; In mydata array I am storing my data. But I observe that...
  • External memory
    hello, i've declared an external memory mapped at address 8000H, and load data into it : unsigned char xdata xdisp[15][24] _at_ 0x8000; unsigned char i; for (i = 0; i < 16; i++) { xdisp[i][0] ...
  • external memory configuration/support
    Hello, We are using the AT89c51rd2 micro-controller for a mass production product. We are currently using both external flash and RAM memories(RAM = 64K, Flash = 1MB). This architecture are working...
  • Addressing External Memory
    Hello, BASE_ADDR = 0x8000 i=1 A)may I know what is #define COMMAND(i) (*((volatile char xdata *)(BASE_ADDR +i))) B)Is is better to address the "command register" of an external chip as XDATA...
  • External EEPROM data memory
    I connecting external eeprom to atmel 89C52 chip. How do I write c code so that I can write data memory to the chip while using the address lines and the rd wr on the chip.