Q
How to configure ADUC841 to write and read external EEPROM
A
>Config CFG841 = 1 won't influence EEPROM, but will influence the stack. >The default value of CFG841 is 10H, then the stack rolls over from SPH/SP = 00FFH to 0100H. >But you config CFG841 = 1, then stack rolls over from SP = FFH to SP = 00H, so the stack maybe overflow, then influence your internal XRAM and the program maybe out of control. >Try to config CFG841 using this instruction CFG841 |= 1; Please let me know if you have any further questions.