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S.No
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Microprocessor
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Microcontroller
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1
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A microprocessor is a general purpose
device which is called a CPU
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A microcontroller is a dedicated chip
which is also called single chip computer.
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2
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A microprocessor do not contain onchip
I/OPorts, Timers, Memories etc..
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A microcontroller includes RAM, ROM, serial and parallel
interface, timers, interrupt
circuitry (in addition to CPU) in a single chip.
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3
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Microprocessors are most
commonly used as the CPU in microcomputer systems
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Microcontrollers are used in small, minimum component designs
performing control-oriented applications.
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4
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Microprocessor instructions are mainly
nibble or byte addressable
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Microcontroller instructions are both
bit addressable as well as byte addressable.
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5
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Microprocessor
instruction sets are mainly intended
for catering to large volumes of data.
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Microcontrollers have
instruction sets catering to the control of inputs and outputs.
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6
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Microprocessor based system design is
complex and expensive
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Microcontroller based system design is
rather simple and cost effective
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7
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The Instruction set of microprocessor
is complex with large number of instructions.
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The instruction set of a
Microcontroller is very simple with less number of instructions. For, ex: PIC
microcontrollers have only 35 instructions.
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8
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A microprocessor has zero status flag
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A microcontroller has no zero flag.
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