Datasheet

14
4266C–CAN–03/08
AT89C51CC03 UART Bootloader
Flow Description
Example
Host
Bootloader
Write Command
’X’ & CR & LF
NO_SECURITY
Wait Write Command
Checksum error
Wait Programming
Send Security error
Send COMMAND_OK
Send Write Command
Wait Checksum Error
Wait COMMAND_OK
Wait Security Error
OR
COMMAND ABORTED
COMMAND FINISHED
Send Checksum error
COMMAND ABORTED
’P’ & CR & LF
OR
’.’ & CR & LF
HOST : 02 0000 03 05 01 F5
BOOTLOADER : 02 0000 03 05 01 F5. CR LF
Programming Atmel function (write SSB to level 2)
HOST : 03 0000 03 06 00 55 9F
BOOTLOADER : 03 0000 03 06 00 55 9F . CR LF
Writing Frame (write BSB to 55h)