BSF STATUS,RP0
CLRF EEADR ;Address 0
MOVLW .9
MOVWF EEDAT ;The data to be written is 9
BSF EECON1,WREN ;Enable writing
MOVLW 0X55
MOVWF EECON2
MOVLW 0XAA
MOVWF EECON2
BSF EECON1,WR ;Start writing
NOP
NOP ;Several NOPs are added for fear of affecting the following operations
MOVLW .7
MOVWF EEADR ;Address 7
MOVLW .6
MOVWF EEDAT ;The data to be written is 6
MOVLW 0X55
MOVWF EECON2
MOVLW 0XAA
MOVWF EECON2
BSF EECON1,WR
NOP
BCF EECON1,WREN ;Disable writing
MOVLW .0 ;Address 0
MOVWF EEADR
BSF EECON1,RD ;Read
MOVF EEDAT,W ;Here the simulated content of W is 9, and the actual readout is also 9.
.
;Display and delay program
.
MOVLW .7 ;Address 7
MOVWF EEADR
BSF EECON1,RD ;Read
MOVF EEDAT,W ;Here the simulated content of W is 6, but the actual run, the readout is 9
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Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
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