Rainbow-electronics ATmega161L Manuale Utente Scaricare il pdf (Pagina 14)

ATmega161(L)

1228C–AVR–08/02

Operands are contained in registers r (Rr) and d (Rd). The result is stored in register d

(Rd).

I/O Direct Figure 11. I/O Direct Addressing

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

Source Register Address.

Data Direct Figure 12. Direct Data Addressing

A 16-bit data address is contained in the 16 LSBs of a two-word instruction. Rd/Rr spec-

ify the destination or source register.

nOP

I/O MEMORY

OP Rr/Rd

15 0

16 LSBs

$0000

$FFFF

20 19

Data Space

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 158 159

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Rainbow-electronics ATmega161L Manuale Utente Pagina 14