T89C51RD2-3CSCL View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'T89C51RD2-3CSCL' PDF : 104 Pages View PDF
Boot Process
Figure 24. Bootloader Process
RESET
Hardware
Condition?
Yes (PSEN = 0, EA = 1,
and ALE = 1 or not connected)
Yes
BLJB = 1
?
JUMP to 0000h
User Application
JUMP to FC03h
BSB=0
BSB = 00h
?
SBV = FCh
?
SBV=FCh
SBV=XXh
JUMP to XX00h
User Boot Loader
JUMP to FC00h
Default Boot Loader
62 T89C51RD2
4243G–8051–05/03
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