w78le58 Winbond Electronics Corp America, w78le58 Datasheet - Page 28

• Manufacturer Part Number: w78le58
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

;********************************************************************************
;* Normal mode 32KB APROM program: depending user's application
;********************************************************************************
NORMAL_MODE:
EXAMPLE 2:
;*****************************************************************************************************************************
;* Example of 4 KB LDROM program: This loader program will erase the 32KB APROM first, then reads the new
;* code from external SRAM and program them into 32 KB APROM bank. XTAL = 16 MHz
;*****************************************************************************************************************************
;************************************************************************
;************************************************************************
;* 1. TIMER0 SERVICE VECTOR ORG = 0BH
;************************************************************************
;* 4KB LDROM MAIN PROGRAM
;************************************************************************
.chip 8052
.RAMCHK OFF
.symbols
CHPCON
CHPENR
SFRAL
SFRAH
SFRFD
SFRCN
ORG 100H
MOV R7,#FFH
MOV IE,#82H
MOV R6,#FEH
MOV TL0,R6
MOV TH0,R7
MOV TMOD,#01H
MOV TCON,#10H
MOV PCON,#01H
ORG
LJMP 100H
ORG 000BH
MOV TL0,R6
MOV TH0,R7
RETI
CLR TR0
.
.
.
.
000H
EQU
EQU
EQU
EQU
EQU
EQU
C5H
BFH
F6H
C4H
C6H
C7H
; JUMP TO MAIN PROGRAM
; TR0 = 0, STOP TIMER0
; TIMER0 INTERRUPT ENABLE FOR WAKE-UP FROM IDLE MODE
; TL0 = FEH
; TH0 = FFH
; TMOD = 01H, SET TIMER0 A 16-BIT TIMER
; TCON = 10H, TR0 = 1,GO
; ENTER IDLE MODE FOR LAUNCHING THE IN-SYSTEM
; PROGRAMMING
; User's application program
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Preliminary W78LE58