Datasheet

6
4266C–CAN–03/08
AT89C51CC03 UART Bootloader
Regular Boot Process
R ES E T
B LJB = 1
H ardw are
Con d ition
S tart Bootload er
FC O N = 00h
S B V < F 8h
S tart U ser Boo tloade rStart Applica tio n
Y e s
N o
Y e s
Y e s
N o
No
Hardware
Boot Process
Software Boot Process
bit EN B O O T in A UXR 1 Regis ter is
initialized with BLJ B inverted
E N B O O T = 1
P C = F 800h
FC O N = 0Fh
E NB O O T = 0
P C = 000 0h
E N B O O T = 1
P C = F 8 00h
FC O N = 00h
Y e s
N o