W77LE532_07 Datasheet, PDF (86/88 Pages) Winbond – 8-BIT MICROCONTROLLER

W77LE532/W77L532A
JMP PROGRAM_64KROM
BLANK_CHECK_ERROR:
JMP $
;*******************************************************************************
;* RE-PROGRAMMING 64KB APFLASH BANK
;*******************************************************************************
PROGRAM_64KROM:
MOV R2, #00H
MOV R1, #00H
MOV DPTR, #0H
MOV SFRAH, R1
MOV SFRCN, #21H
MOV R6, #9CH
MOV R7, #FFH
MOV TL0, R6
MOV TH0, R7
; TARGET LOW BYTE ADDRESS
; TARGET HIGH BYTE ADDRESS
; SFRAH, TARGET HIGH ADDRESS
; SFRCN = 21H, PROGRAM 64K APFLASH0
; SFRCN = A1H, PROGRAM 64K APFLASH1
; SET TIMER FOR PROGRAMMING, ABOUT 50 µS.
PROG_D_64K:
MOV SFRAL, R2
; SFRAL = LOW BYTE ADDRESS
CALL GET_BYTE_FROM_PC_TO_ACC ; THIS PROGRAM IS BASED ON USER’S CIRCUIT.
MOV @DPTR, A
; SAVE DATA INTO SRAM TO VERIFY CODE.
MOV SFRFD, A
; SFRFD = DATA IN
MOV TCON, #10H
; TCON = 10H, TR0 = 1,GO
MOV PCON, #01H
; ENTER IDLE MODE (PRORGAMMING)
INC DPTR
INC R2
CJNE R2, #0H, PROG_D_64K
INC R1
MOV SFRAH, R1
CJNE R1, #0H, PROG_D_64K
;*****************************************************************************
; * VERIFY 64KB APFLASH BANK
;*****************************************************************************
MOV R4, #03H
; ERROR COUNTER
MOV R6, #FDH
; SET TIMER FOR READ VERIFY, ABOUT 1.5 µS.
MOV R7, #FFH
MOV TL0, R6
MOV TH0, R7
MOV DPTR, #0H
; The start address of sample code
MOV R2, #0H
; Target low byte address
MOV R1, 0H
; Target high byte address
MOV SFRAH, R1
; SFRAH, Target high address
MOV SFRCN, #00H
; SFRCN = 00H, Read APFLASH0
; SFRCN = 80H , Read APFLASH1
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