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MON51 require external ram or rom to work ? i m using the 89s8252 from atmel this microcontrol have 256 byte internal ram.
if i using this chip, 1. can i use the internal ram 256 byte for program code? without using the external ram ? 2. can i use the external ram, to store the program code and mon51 program ? 3. or MON51, must require external ram and rom, cant use interal ram ? external ram for store program code, and eeprom to store monitor51 program ?
1. No you can Not. 2. Yes there is a trick to do this. But how are you going to get the Monitor in to RAM. 3.the 8052 has several memory spaces. some are read / Write, some are Read Only.
"some are read / Write, some are Read Only."
And only is is "execute".
(the clue is in the name...)