at89c51snd1c ATMEL Corporation, at89c51snd1c Datasheet - Page 18
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at89c51snd1c
Manufacturer Part Number
at89c51snd1c
Description
At89c51snd1c At89c51snd1 Uart Bootloader
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51SND1C.pdf
(25 pages)
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Figure 11. Erase Command
Example
18
COMMAND FINISHED
AT89C51SND1 UART Bootloader
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