Rainbow Electronics T89C51AC2 - Manual (Page 42)

42
T89C51AC2
Rev. B – 19-Dec-01
Figure 17. Hardware Boot Process Algorithm
10.3 Application-
Programming-Interface Several Application Program Interface (API) calls are available for use by an application
program to permit selective erasing and programming of FLASH pages. All calls are
made by functions.
All these APIs are describe in an documentation: "In-System Programing: Flash Library
for T89C51CC01".
This is available on the web site.
RESET
Hardware
condition?
BLJB == 0
?
bit ENBOOT in AUXR1 register
is initialized with BLJB.
H
a
rdw
a
re
So
ft
w
a
re
ENBOOT = 1
PC = F800h
ENBOOT = 1
PC = F800h
FCON = 00h
FCON = F0h
Boot Loader
in FM1
ENBOOT = 0
PC = 0000h
Yes
Yes
No
No
Application
in FM0