W78E054D Datasheet, PDF (65/89 Pages) List of Unclassifed Manufacturers – 8-bit microcontroller

W78E054D/W78E052D Data Sheet
PGM
End of Programming ? ^YES
NO
Setting Timer and enable Timer
interrupt for wake-up .
(50us for program operation)
Get the parameters of new code
(Address and data bytes)
through I/O ports, UART or
other interfaces.
Setting control registers for
programming:
MOV SFRAH,#ADDRESS_H
MOV SFRAL,#ADDRESS_L
MOV SFRFD,#DATA
MOV SFRCN,#21H
Ease 14K AP programming:
MOV ERPAGE,#01
MOV SFRCN,#22H
Read_Compay_ID
Read_Device_ID
Read_VT
Read_Dist
Is currently in the
F02K BOOT Mode ?
NO
Software reset CPU and
re-boot from the 2KB
APROM.
MOV CHPCON,#81h
END
Executing new code
from address
00H in the 2KB APROM.
Part 2:
Procedure of Updating
the 2KB APROM
YES
Hardware Reset
to re-boot from
new 2 KB APROM.
(S/W reset is
invalid in F02K BOOT
Mode)
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Publication Release Date: Jun 9, 2015
Revision A13