w78le58 Winbond Electronics Corp America, w78le58 Datasheet - Page 15

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

Preliminary W78LE58
The Algorithm of In-System Programming
Part 1:32KB APROM
START
procedure of entering
In-System Programming Mode
Enter In-System
No
Programming Mode ?
(conditions depend on
user's application)
Yes
Setting control registers
MOV CHPENR,#87H
Execute the normal application
MOV CHPENR,#59H
program
MOV CHPCON,#03H
Setting Timer (about 1.5 us)
and enable timer interrupt
END
Start Timer and enter idle Mode.
(CPU will be wakened from idle mode
by timer interrupt, then enter In-System
Programming mode)
CPU will be wakened by interrupt and
re-boot from 4KB LDROM to execute
the loader program.
Go
Publication Release Date: June 2000
- 15 -
Revision A1