GMS87C4060 Datasheet, PDF (23/102 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

PRELIMINARY
GMS81C4040/87C4060
At execution of
a CALL/TCALL/PCALL
At acceptance
of interrupt
At execution
of RET instruction
01FC
01FD
01FE
01FF
PCL
PCH
Push
down
01FC
01FD
01FE
01FF
PSW
PCL
PCH
Push
down
01FC
01FD
01FE PCL
Pop
01FF PCH
up
SP before
execution
SP after
execution
01FF
01FD
01FF
01FC
01FD
01FF
At execution
of PUSH instruction
PUSH A (X,Y,PSW)
01FC
01FD
01FE
01FF
A
Push
down
SP before
execution
SP after
execution
01FF
01FE
At execution
of POP instruction
POP A (X,Y,PSW)
01FC
01FD
01FE
01FF
A
Pop
up
01FE
01FF
At execution
of RETI instruction
01FC
01FD PSW
01FE PCL
Pop
up
01FF PCH
01FC
01FF
0100H
Stack
depth
01FFH
Figure 8-4 Stack Operation
Nov. 1999 Ver 1.0
PRELIMINARY
19