Rainbow-electronics ATtiny28L Manual do Utilizador descarregar pdf (Página 9)

ATtiny28L/V

1062E–10/01

I/O Direct Figure 10. I/O Direct Addressing

Operand address is contained in six bits of the instruction word. n is the destination or

source register address.

Relative Program Addressing,

RJMP and RCALL

Figure 11. Relative Program Memory Addressing

Program execution continues at address PC + k + 1. The relative address k is -2048 to

2047.

Constant Addressing Using

the LPM Instruction

Figure 12. Code Memory Constant Addressing

Constant byte address is specified by the Z-register contents. The 15 MSBs select word

address (0 - 1K), and LSB selects low byte if cleared (LSB = 0) or high byte if set (LSB =

1).

15 0

15 012 11

PROGRAM MEMORY

$000

$3FF

15 1 0

Z-REGISTER

PROGRAM MEMORY

$000

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 74 75

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Rainbow-electronics ATtiny28L Manual do Utilizador Página 9