Give examples of different addressing modes used in microcontroller programming.
In order to transfer data to various memory locations in a microcontroller different addressing techniques are used. Give some examples with reference to 8051 microcontroller.
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3 replies
angarika
almost 13 years ago
Addressing function can be a way to handle the operand. Operand indicates the data were working with (in most cases source data).
ankitay
almost 13 years ago
An "addressing mode" refers to how you are addressing a given memory location. In summary, the addressing modes are as follows, with an example of each:
Immediate Addressing MOV A,#20h
Direct Addressing MOV A,30h
Indirect Addressing MOV A,@R0
External Direct MOVX A,@DPTR
Code Indirect MOVC A,@A+DPTR Source: http://en.docsity.com/en-docs/Addressing_Modes_-_Microcontroller_Interfacing_-_Lab_Handouts_
Immediate Addressing MOV A,#20h
Direct Addressing MOV A,30h
Indirect Addressing MOV A,@R0
External Direct MOVX A,@DPTR
Code Indirect MOVC A,@A+DPTR Source: http://en.docsity.com/en-docs/Addressing_Modes_-_Microcontroller_Interfacing_-_Lab_Handouts_
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