W925EP01 Datasheet, PDF (77/108 Pages) Winbond – 8-BIT CID MICROCONTROLLER

W925EP01/ W925EP01FG
MAIN_4K:
MOV R4,#03H
; ERROR COUNTER
MOV TA,#AAH
; TA = AAH, CHPCON WRITE ENABLE.
MOV TA,#55H
; TA = 55H, CHPCON WRITE ENABLE.
MOV CHPCON,#03H
PROGRAMMING.
; CHPCON = 03H, ENABLE IN-SYSTEM
MOV SFRCN,#00H
MOV TA,#00H
; DISABLE TA WRITE ATTRIBUTE
MOV TCON,#00H
; TCON = 00H, TR = 0 TIMER0 STOP
MOV TMOD,#01H
; TMOD = 01H, SET TIMER0 A 16BIT TIMER
MOV IP,#00H
; IP = 00H
MOV IE,#82H
; IE = 82H, TIMER0 INTERRUPT ENABLED
MOV R6,#F0H
MOV R7,#FFH
MOV TL0,R6
MOV TH0,R7
MOV TCON,#10H
; TCON = 10H, TR0 = 1, GO
MOV PCON,#01H
; ENTER IDLE MODE
UPDATE_64K:
MOV TCON,#00H
MOV IP,#00H
MOV IE,#82H
MOV TMOD,#01H
MOV R6,#D0H
15 mS. DEPENDING
MOV R7,#8AH
MOV TL0,R6
MOV TH0,R7
; TCON = 00H , TR = 0 TIM0 STOP
; IP = 00H
; IE = 82H, TIMER0 INTERRUPT ENABLED
; TMOD = 01H, MODE1
; SET WAKE-UP TIME FOR ERASE OPERATION, ABOUT
; ON USER'S SYSTEM CLOCK RATE.
ERASE_P_4K:
MOV SFRCN,#22H
MOV TCON,#10H
; SFRCN(E7H) = 22H ERASE 64K
; TCON = 10H, TR0 = 1,GO
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Publication Release Date: Apr. 10, 2006
Revision A2