STC micro STC8A8K64D4 Series - Page 74

STC8A8K64D4 Series Manual
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MOV P5M1, #00H
MOV P_SW2,#80H
MOV A,#00H ; Select internal IRC
MOV DPTR,#CKSEL
MOVX @DPTR,A
MOV A,#08H ; Clock divided by 8
MOV DPTR,#CLKDIV
MOVX @DPTR,A
MOV P_SW2,#00H
INC IRTRIM ;IRC Fine-tune frequency up 3 ‰ (pay attention to judging boundaries)
; DEC IRTRIM ;IRC Fine-tune frequency down 3 ‰ (pay attention to judging boundaries)
JMP $
END