at89c51snd1 ATMEL Corporation, at89c51snd1 Datasheet - Page 18

• Manufacturer Part Number: at89c51snd1
• Description: Mp3 Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 11. Erase Command
Example
18
AT89C51SND1 UART Bootloader
COMMAND FINISHED
Wait COMMAND_OK
Send Erase Command
OR
Host
OR
COMMAND ABORTED
COMMAND ABORTED
Wait Checksum Error
Wait Security Error
Full Chip Erase
Erase Block1(8k to 16k)
HOST
BOOTLOADER
HOST
BOOTLOADER
Erase Command
“X” & CR & LF
“P” & CR & LF
“.” & CR & LF
: 01 0000 03 07 F5
: 01 0000 03 07 F5 . CR LF
: 02 0000 03 01 20 DA
: 02 0000 03 01 20 DA . CR LF
Send Checksum Error
Send Security Error
Bootloader
Wait Erase Command
Send COMMAND_OK
NO_SECURITY
Checksum Error
Wait Erasing
4241B–MP3–07/04