Figure 9. Stack Manipulation Example - STMicroelectronics ST72361 Auto Series Manual

Central processing unit
Figure 9.
@ 0100h
SP
@ 01FFh
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Stack manipulation example
CALL
Interrupt
Subroutine
Event
SP
CC
A
X
PCH
PCL
PCH PCH
PCL PCL
Stack Higher Address = 01FFh
Stack Lower Address = 0100h
Doc ID 12468 Rev 3
PUSH Y POP Y
SP
SP
Y
CC CC
A
X
PCH PCH
PCL PCL
PCH PCH
PCL PCL
ST72361xx-Auto
IRET
A
X
SP
PCH
SP
PCL
RET
or RSP