Rainbow Electronics AT89C5132 - Manual (Page 21)

21
AT8xC5132
4173A–8051–08/02
Figure 14. Hardware Boot Process Algorithm
The software process (bootloader) is detailed in the section “In-System and In-Applica-
tion Programming”.
Preventing Flash Corruption See “Reset Recommendation to Prevent Flash Corruption” on page 46 in the section
“Power Management”.
Atmel’s
Boot Loader
Hardwa
re
Sof
tw
a
re
Hard Cond?
ISP = L?
RESET
Hard Cond Init
ENBOOT = 1
PC = F000h
FCON = 00h
Prog Cond?
BLJB = P?
Standard Init
ENBOOT = 0
PC = 0000h
FCON = F0h
Prog Cond Init
ENBOOT = 1
PC = F000h
FCON = F0h
User’s
Application P
roce
s
s
P
ro
ce
ss