This document discusses five addressing modes used in microcontrollers: immediate addressing which uses data, direct addressing which uses memory addresses, register direct addressing which references registers, register indirect addressing which accesses memory using register contents, and indexed addressing which uses registers plus an offset to address memory. These addressing modes are used to move data to and from memory and registers using instructions like MOV and MOVC.

1. MICRO CONTROLLER
ADDRESSING MODES

2. ADDRESSING MODES
• Immediate addressing mode MOV A, #data;
• Direct addressing mode MOV A , address;
• Register direct addressing mode MOV A , R4;
• Register indirect addressing mode MOV A , @R0;
• Indexed addressing mode MOVC A,@A+DPTR and MOVC A,@A+PC
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3. Immediate addressing mode
MOV A, #data;
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4. Direct addressing mode
MOV A , address;
,
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5. MOV A , R4;
Register direct addressing mode
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7. Register indirect addressing mode
MOV A , @R0; // Only R0 and R1 can be used in this type of addressing mode
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8. Indexed addressing mode
MOVC A,@A+DPTR and MOVC A,@A+PC
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9. Thank you
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