tmp86c847iug TOSHIBA Semiconductor CORPORATION, tmp86c847iug Datasheet - Page 47
tmp86c847iug
Manufacturer Part Number
tmp86c847iug
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP86C847IUG.pdf
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Example :Save/restore register using PUSH and POP instructions
Example :Save/restore register using data transfer instructions
3.4.2.1
3.4.2.2
SP
At acceptance of
an interrupt
PINTxx:
PINTxx:
Figure 3-3 Save/restore register using PUSH and POP instructions
can be saved/restored using the PUSH/POP instructions.
Using PUSH and POP instructions
Using data transfer instructions
If only a specific register is saved or interrupts of the same source are nested, general-purpose registers
To save only a specific register without nested interrupts, data transfer instructions are available.
PSW
PCH
PCL
PUSH
(interrupt processing)
POP
RETI
LD
(interrupt processing)
LD
RETI
SP
At execution of
PUSH instruction
WA
WA
(GSAVA), A
A, (GSAVA)
PSW
PCH
PCL
W
A
Page 39
SP
At execution of
POP instruction
; Restore WA register
; Restore A register
; Save WA register
; RETURN
; Save A register
; RETURN
PSW
PCL
PCH
SP
At execution of
RETI instruction
TMP86C847IUG
Address
(Example)
b-5
b-4
b-3
b-2
b-1
b
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