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The memory that is use externally when microcontroller works in expanded mode for special cases .

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Q: What do you mean by off-chip memory in microcontroller?
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Similarites between a microcontroller and a microprocessor?

Microcontroller = (microprocessor+memory+peripherals) on a single chip


What is mean by pic in microcontroller?

The PIC is a specific architecture of microcontroller.


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What is the differencebetween on-chip and off-chip memory?

On-chip memory is a memory that resides on microcontroller itself. e.g RAM. It may be one of the Internal RAM or Special Function Register (SFR). Off-chip memory is external ROM or EPROM.


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That depends on the specific microcontroller.


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Difference between Z86E04 microcontroller from PIC microcontroller?

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How the program will lost in a microcontroller?

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yes,microprocessor does not have it's own memory while microcontroller has it's own memory.microprrocessor has required peripheril devices'