Rainbow-electronics ATmega163L Manuale Utente Scaricare il pdf (Pagina 14)

ATmega163(L)

Constant Addressing Using The LPM and SPM Instructions

Figure 18. Code Memory Constant Addressing

Constant byte address is specified by the Z-register contents. The 15 MSBs select word address (0 - 8K). For LPM, the

LSB selects low byte if cleared (LSB = 0) or high byte if set (LSB = 1). For SPM, the LSB should be cleared.

Indirect Program Addressing, IJMP and ICALL

Figure 19. Indirect Program Memory Addressing

Program execution continues at address contained by the Z-register (i.e. the PC is loaded with the contents of the Z-

Relative Program Addressing, RJMP and RCALL

Figure 20. Relative Program Memory Addressing

Program execution continues at address PC + k + 1. The relative address k is from -2048 to 2047.

$1FFF

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 155 156

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Rainbow-electronics ATmega163L Manuale Utente Pagina 14