131
AT89C51ID2
4289C–8051–11/05
Write / Program Commands
This flow is common to the following frames:
Flash / Eeprom Programming Data Frame
EOF or Atmel Frame (only Programming Atmel Frame)
Config Byte Programming Data Frame
Baud Rate Frame
Description
Figure 53. Write/Program Flow
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
: 01 0010 00 55 9A
BOOTLOADER
: 01 0010 00 55 9A . CR LF
Programming Data (write 55h at address 0010h in the Flash)
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)