MEMORY ORGANIZATION IN 8051
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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32K
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64K
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4K
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128K
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Detailed explanation-1: -While Internal RAM is limited to 128 bytes (256 bytes with an 8052), the 8051 supports External RAM up to 64K. Programming Tip: The 8051 may only address 64k of RAM. To expand RAM beyond this limit requires programming and hardware tricks.
Detailed explanation-2: -The 8051 has a maximum of only 256 bytes of internal data memory. This memory includes the four register banks, the 16 bytes of bit-addressable memory, the stack, and variable memory. Bank switching uses up to 4 bytes of this internal data memory for every call that switches banks.
Detailed explanation-3: -The program counter in the 8051 is 16 bits wide. This means that the 8051 can access program addresses 0000 to FFFFH, a total of 64K bytes of code.
Detailed explanation-4: -8051 has internal RAM (128 Bytes) and ROM (4K Bytes).