13
AT90S2313
0839G–08/01
Data Indirect with Pre-
decrement
Figure 15. Data Indirect Addressing with Pre-decrement
The X-, Y- or Z-register is decremented before the operation. Operand address is the
decremented contents of the X-, Y- or Z-register.
Data Indirect with Post-
increment
Figure 16. Data Indirect Addressing with Post-increment
The X-, Y- or Z-register is incremented after the operation. Operand address is the con-
tents of the X-, Y- or Z-register prior to incrementing.
Constant Addressing Using
the LPM Instruction
Figure 17. Code Memory Constant Addressing
Constant byte address is specified by the Z-register contents. The 15 MSBs select word
address (0 - 1K), the LSB selects low byte if cleared (LSB = 0) or high byte if set (LSB =
1).
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