upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 50

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

3.4.7 Stack addressing
50
[Function]
[Description example]
[Illustration]
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/restored upon interrupt request generation.
Stack addressing can be used to access the internal high-speed RAM area only.
In the case of PUSH DE
SP
SP
Instruction code
FEDEH
FEE0H
CHAPTER 3 CPU ARCHITECTURE
User’s Manual U16994EJ3V0UD
1
0
FEE0H
FEDFH
FEDEH
1
0
7
1
Memory
0
D
E
1
0
0