STC micro STC8A8K64D4 Series - Page 475

STC8A8K64D4 Series Manual
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IAP_IDLE:
MOV IAP_CONTR,#0 ;Disable IAP function
MOV IAP_CMD,#0 ;Clear command register
MOV IAP_TRIG,#0 ;Clear trigger register
MOV IAP_ADDRH,#80H ;Set the address to a non-IAP area
MOV IAP_ADDRL,#0
RET
IAP_READ:
MOV A,#LOW IAP_OFFSET ;Using MOVC to read the EEPROM needs to add the
corresponding offset
ADD A,DPL
MOV DPL,A
MOV A,@HIGH IAP_OFFSET
ADDC A,DPH
MOV DPH,A
CLR A
MOVC A,@A+DPTR ;Read data using MOVC
RET
IAP_PROGRAM:
MOV IAP_CONTR,#80H ;Enable IAP
MOV IAP_TPS,#12 ;Set the erasing wait parameter of 12MHz
MOV IAP_CMD,#2 ;Set IAP writing command
MOV IAP_ADDRL,DPL ;Set IAP low address
MOV IAP_ADDRH,DPH ;Set IAP high address
MOV IAP_DATA,A ;Write IAP data
MOV IAP_TRIG,#5AH ;Write trigger command (0x5a)
MOV IAP_TRIG,#0A5H ;Write trigger command (0xa5)
NOP
LCALL IAP_IDLE ;Disable IAP function
RET
IAP_ERASE:
MOV IAP_CONTR,#80H ;Enable IAP
MOV IAP_TPS,#12 ;Set the erasing wait parameter of 12MHz
MOV IAP_CMD,#3 ;Set IAP erasing command
MOV IAP_ADDRL,DPL ;Set IAP low address
MOV IAP_ADDRH,DPH ;Set IAP high address
MOV IAP_TRIG,#5AH ;Write trigger command (0x5a)
MOV IAP_TRIG,#0A5H ;Write trigger command (0xa5)
NOP
LCALL IAP_IDLE ;Disable IAP function
RET
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