UPD78F0411GA-GAM-AX Datasheet, PDF (77/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 3 CPU ARCHITECTURE
3.4.9 Stack addressing
[Function]
The stack area is indirectly addressed with the stack pointer (SP) contents.
This addressing method is automatically employed when the PUSH, POP, subroutine call and return
instructions are executed or the register is saved/reset upon generation of an interrupt request.
With stack addressing, only the internal high-speed RAM area can be accessed.
[Description example]
PUSH DE; when saving DE register
Operation code
10110101
[Illustration]
SP
FEE0H
SP
FEDEH
7
Memory
0
FEE0H
FEDFH
D
FEDEH
E
User’s Manual U18698EJ1V0UD
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