GMS81C2012 Datasheet, PDF (27/107 Pages) Hynix Semiconductor – HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS

HYUNDAI MicroElectronics
GMS81C2012/GMS81C2020
At execution of
a CALL/TCALL/PCALL
01FE
01FD
01FC
01FB
PCH
PCL
Push
down
At acceptance
of interrupt
01FE
01FD
01FC
01FB
PCH
PCL
PSW
Push
down
At execution
of RET instruction
01FE PCH
Pop
01FD PCL
up
01FC
01FB
SP before
execution
SP after
execution
01FE
01FC
01FE
01FB
01FC
01FE
At execution
of PUSH instruction
PUSH A (X,Y,PSW)
01FE
A
01FD
01FC
01FB
Push
down
At execution
of POP instruction
POP A (X,Y,PSW)
01FE
A
Pop
up
01FD
01FC
01FB
SP before
execution
SP after
execution
01FE
01FD
01FD
01FE
Figure 8-4 Stack Operation
At execution
of RET instruction
01FE PCH
Pop
01FD PCL
up
01FC PSW
01FB
01FB
01FE
0100H
Stack
depth
01FEH
MAR. 2000 Ver 1.00
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