SAB80515 Datasheet, PDF (141/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

Instruction Set
AJMP addr11
Function:
Absolute jump
Description:
AJMP transfers program execution to the indicated address, which is formed at run-
time by concatenating the high-order five bits of the PC (after incrementing the PC
twice), op code bits 7-5, and the second byte of the instruction. The destination must
therefore be within the same 2K block of program memory as the first byte of the
instruction following AJMP.
Example:
The label ”JMPADR” is at program memory location 0123H. The instruction
AJMP JMPADR
Operation:
is at location 0345H and will load the PC with 0123H.
AJM P
(PC) ← (PC) + 2
(PC10-0) ← page address
Encoding:
Bytes:
Cycles:
a10 a9 a8 0 0 0 0 1
2
2
a7 a6 a5 a4 a3 a2 a1 a0
Semiconductor Group
141