W78E054D Datasheet, PDF (80/89 Pages) List of Unclassifed Manufacturers – 8-bit microcontroller

W78E054D/W78E052D Data Sheet
mov
SFRAL,#0FEh
mov
SFRAH,#0FFh
mov
SFRCN,#READ_DID
mov
TL0,#LOW (65536-READ_TIME)
mov
TH0,#HIGH(65536-READ_TIME)
setb TR0
mov
CHPCON,#00000011b
clr
TF0
clr
TR0
mov
A,SFRFD
;read device id low byte
ret
;************************************************************************
;* Flash standby mode
;************************************************************************
Standby:
mov
SFRCN,#FLASH_STANDBY
mov
SFRFD,#0FFh
mov
SFRAL,#0FFh
mov
SFRAH,#0FFh
setb TR0
mov
CHPCON,#00000011b
clr
TF0
clr
TR0
ret
;************************************************************************
;* Erase APROM
;************************************************************************
Erase_APROM:
mov
EAPAGE,#01h
;set EAPAGE is APROM
mov
SFRCN,#ERASE_ROM
mov
TL0,#LOW (65536-ERASE_TIME)
mov
TH0,#HIGH(65536-ERASE_TIME)
setb TR0
mov
CHPCON,#00000011b
mov
EAPAGE,#00h
;clear EAPAGE
clr
TF0
clr
TR0
ret
;************************************************************************
; * VERIFY APROM BANK
;************************************************************************
Erase_Verify_ROM:
mov
SFRCN,#ERASE_VERIFY
mov
DPTR,#0000h
er_lp:
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Publication Release Date: Jun 9, 2015
Revision A13