STC89LE53RC datasheet(131/165 Pages) STC

131 / 165 page

;------------------------------------------------------------------------

;Byte-Program

Byte_Program:

MOV

ISP_CONTR,

#ENABLE_ISP

;Enable IAP function,

;determine Flash wait time

MOV

ISP_CMD,

#02H

;Select Byte Program mode

MOV

ISP_ADDRH,

DPH

;Fill page address in ISP_ADDRH&ISP_ADDRL

MOV

ISP_ADDRL,

DPL

MOV

ISP_DATA,

;Save the value into ISP_DATA

CLR

MOV

ISP_TRIG,

#46H

;Trigger ISP processing

MOV

ISP_TRIG,

#0B9H

;Trigger ISP processing

NOP

SETB

ACALL IAP_Disable

;Disable IAP function,

;clear some registers associated with ISP

RET

;----------------------------------------------------------------------------

;Sector-Erase

Sector_Erase:

MOV

ISP_CONTR,

#ENABLE_ISP

;Enable IAP function,

;determine Flash wait time

MOV

ISP_CMD,

#03H

;Select Page Erase Mode

MOV

ISP_ADDRH,

DPH

;Fill page address in ISP_ADDRH&ISP_ADDRL

MOV

ISP_ADDRL,

DPL

CLR

MOV

ISP_TRIG,

#46H

;Trigger ISP processing

MOV

ISP_TRIG,

#0B9H

;Trigger ISP processing

NOP

SETB

ACALL IAP_Disable

;Disable IAP function,

;clear some registers associated with ISP

RET

;----------------------------------------------------------------------------

Trigger_ISP:

CLR

MOV

ISP_TRIG,

#46H

;Trigger ISP processing

MOV

ISP_TRIG,

#0B9H

;Trigger ISP processing

NOP

SETB

RET

;----------------------------------------------------------------------------

IAP_Disable:

;Disable IAP function, cleal some registers associated with ISP

MOV

ISP_CONTR,

MOV

ISP_CMD,

MOV

ISP_TRIG

RET

131

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