W78E516DDG Datasheet, PDF (69/90 Pages) Nuvotem Talema – 8-BIT MICROCONTROLLER

W78E516D/W78E058D Data Sheet
The Algorithm of In-System Program m ing
START
Part 1:APRO M procedure
of entering In-S ystem
P rogram m ing M ode
Enter In-System
No
Program m ing M ode ?
(conditions depend on user's
application)
Yes
Setting control registers
M O V CHPEN R,#87H
M O V CHPEN R,#59H
M O V CH PCO N ,#03H
Execute the norm al application
program
Setting Tim er (about 1.5us) and
enable tim er interrupt
Start Tim er and enter idle M ode.
( CPU will be wakened from idle m ode by
tim er interrupt, then enter In-System
Program m ing m ode)
END
CPU w ill be w akened by interrupt and re-
boot from 4KB LDROM to execute the
loader program .
Go
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Publication Release Date: Feb 15, 2011
Revision A09