W77LE532_07 Datasheet, PDF (84/88 Pages) Winbond – 8-BIT MICROCONTROLLER

W77LE532/W77L532A
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 APFLASH program: depending user's application
;********************************************************************************
NORMAL_MODE:
.
; User's application program
.
.
EXAMPLE 2:
;***************************************************************************************************************************** ;*
Example of 4KB LDFLASH program: This loader program will erase the 64KB APFLASH first, then reads the
new ;* code from external SRAM and program them into 64KB APFLASH bank. XTAL = 24 MHz
;*****************************************************************************************************************************
.chip 8052
.RAMCHK OFF
.symbols
CHPCON
TA
SFRAL
SFRAH
SFRFD
SFRCN
EQU
EQU
EQU
EQU
EQU
EQU
9FH
C7H
ACH
ADH
AEH
AFH
ORG 000H
LJMP 100H
; JUMP TO MAIN PROGRAM
;************************************************************************
;* 1. TIMER0 SERVICE VECTOR ORG = 0BH
;************************************************************************
ORG 000BH
CLR TR0
; TR0 = 0, STOP TIMER0
MOV TL0, R6
MOV TH0, R7
RETI
;************************************************************************
;* 4KB LDFLASH MAIN PROGRAM
;************************************************************************
ORG 100H
MAIN_4K:
- 84 -