W79E201 Datasheet, PDF (82/87 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E201
;************************************************************************
;* 64K AP Flash EPROM MAIN PROGRAM
;************************************************************************
ORG 100H
MAIN_64K:
MOV A,P1
; SCAN P1.0
ANL A,#01H
CJNE A,#01H,PROGRAM_64K ; IF P1.0 = 0, ENTER IN-SYSTEM PROGRAMMING MODE
JMP NORMAL_MODE
PROGRAM_64:
MOV TA, #AAH
; CHPCON register is written protect by TA register.
MOV TA, #55H
MOV CHPCON, #03H ; CHPCON = 03H, ENTER IN-SYSTEM PROGRAMMING MODE
MOV SFRCN, #0H
MOV TCON, #00H ; TR = 0 TIMER0 STOP
MOV IP, #00H
; IP = 00H
MOV IE, #82H
; TIMER0 INTERRUPT ENABLE FOR WAKE-UP FROM IDLE MODE
MOV R6, #F0H
; TL0 = F0H
MOV R7, #FFH
; TH0 = FFH
MOV TL0, R6
MOV TH0, R7
MOV TMOD, #01H ; TMOD = 01H, SET TIMER0 A 16-BIT TIMER
MOV TCON, #10H ; TCON = 10H, TR0 = 1,GO
MOV PCON, #01H ; ENTER IDLE MODE FOR LAUNCHING THE IN-SYSTEM
PROGRAMMING
;************** ******************************************************************
;* Normal mode 64KB AP Flash EPROM program: depending user's application
;********************************************************************************
NORMAL_MODE:
.
; User's application program
.
.
.
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