atmega103 ATMEL Corporation, atmega103 Datasheet - Page 16
atmega103
Manufacturer Part Number
atmega103
Description
Atmega103 8-bit With 128k Bytes Of In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA103.pdf
(141 pages)
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Direct Program Address, JMP
and CALL
Indirect Program Addressing,
IJMP and ICALL
Relative Program Addressing,
RJMP and RCALL
16
ATmega103(L)
1). If ELPM is used, LSB of the RAM Page Z register (RAMPZ) is used to select low or
high memory page (RAMPZ0 = 0: Low Page, RAMPZ0 = 1: High Page).
Figure 17. Direct Program Memory Addressing
Program execution continues at the address immediate in the instruction words.
Figure 18. 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-register).
Figure 19. Relative Program Memory Addressing
15
15
31
15
15
OP
12
11
OP
Z-REGISTER
PC
16 LSBs
k
21 20
1
0
0
16
0
0
PROGRAM MEMORY
PROGRAM MEMORY
PROGRAM MEMORY
$0000
$7FFF/$FFFF
$0000
$7FFF/$FFFF
0945I–AVR–02/07
$0000
$7FFF/$FFFF
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