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參數(shù)資料
型號(hào): W79E201A16PN
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQCC44
封裝: ROHS COMPLIANT, PLASTIC, LCC-44
文件頁(yè)數(shù): 84/87頁(yè)
文件大小: 818K
代理商: W79E201A16PN
W79E201
- 84 -
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
; TCON = 00H , TR = 0 TIM0 STOP
MOV
IP,#00H
; IP = 00H
MOV
IE,#82H
; IE = 82H, TIMER0 INTERRUPT ENABLED
MOV
TMOD,#01H
; TMOD = 01H, MODE1
MOV
R6,#D0H ; SET WAKE-UP TIME FOR ERASE OPERATION, ABOUT 15 ms
;DEPENDING ON USER'S SYSTEM CLOCK RATE.
MOV
R7,#8AH
MOV
TL0,R6
MOV
TH0,R7
ERASE_P_4K:
MOV
SFRCN,#22H ; SFRCN = 22H, ERASE 64K AP Flash EPROM
MOV
TCON,#10H
; TCON = 10H, TR0 = 1,GO
MOV
PCON,#01H
; ENTER IDLE MODE (FOR ERASE OPERATION)
;*********************************************************************
;* BLANK CHECK
;*********************************************************************
MOV
SFRCN,#0H
; SFRCN = 00H, READ 64KB AP Flash EPROM
MOV
SFRAH,#0H
; START ADDRESS = 0H
MOV
SFRAL,#0H
MOV
R6,#FDH
; SET TIMER FOR READ OPERATION, ABOUT 1.5
μ
S.
MOV
R7,#FFH
MOV
TL0,R6
MOV
TH0,R7
blank_check_loop:
SETB
TR0
; enable TIMER 0
MOV
PCON,#01H
; enter idle mode
MOV
A,SFRFD
; read one byte
CJNE
A,#FFH,blank_check_error
INC
SFRAL
; next address
MOV
A,SFRAL
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