STC micro STC8A8K64D4 Series - Wake up MCU from Power Saving Mode Using INT0;INT1;INT2;INT3;INT4 Interrupts

STC8A8K64D4 Series Manual
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P0M1 DATA 093H
P0M0 DATA 094H
P1M1 DATA 091H
P1M0 DATA 092H
P2M1 DATA 095H
P2M0 DATA 096H
P3M1 DATA 0B1H
P3M0 DATA 0B2H
P4M1 DATA 0B3H
P4M0 DATA 0B4H
P5M1 DATA 0C9H
P5M0 DATA 0CAH
ORG 0000H
LJMP MAIN
ORG 0003H
LJMP INT0ISR
ORG 0100H
INT0ISR:
CPL P3.4 ;Test port
RETI
MAIN:
MOV SP, #5FH
MOV P0M0, #00H
MOV P0M1, #00H
MOV P1M0, #00H
MOV P1M1, #00H
MOV P2M0, #00H
MOV P2M1, #00H
MOV P3M0, #00H
MOV P3M1, #00H
MOV P4M0, #00H
MOV P4M1, #00H
MOV P5M0, #00H
MOV P5M1, #00H
SETB EX0 ;Enable INT0 interrupt to wake up MCU
SETB EA
NOP
NOP
; MOV PCON,#IDL ;MCU enters IDLE mode
MOV PCON,#PD ;MCU enters power down mode
NOP
NOP
NOP
NOP
CLR P3.5 ;Test port
JMP $
END
6.7.7 Wake up MCU from Power Saving Mode using
INT0/INT1/INT2/INT3/INT4 interrupts
C language code
// Operating frequency for test is 11.0592MHz