Rainbow Electronics ATtiny28L - Manual (Page 9)

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
PC
15 0 12 11
OP k
PROGRAM MEMORY
$000
$3FF
+1
$3FF
15 1 0
Z-REGISTER
PROGRAM MEMORY
$000