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T89C51AC2 Datasheet(PDF) 13 Page - ATMEL Corporation

Part # T89C51AC2
Description  80C51 Microcontrollers
PDF  29 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T89C51AC2 Datasheet(HTML) 13 Page - ATMEL Corporation

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A/T89C51AC2 UART Bootloader
4231C–CAN–03/05
Flow Description: Blank Check Command
Example
Host
Bootloader
Blank Check Command
’X’ & CR & LF
Flash blank
Wait Blank Check Command
Send first Address
Send COMMAND_OK
Send Blank Check Command
Wait Checksum Error
Wait Address not
erased
Wait COMMAND_OK
OR
COMMAND ABORTED
COMMAND FINISHED
Send Checksum error
COMMAND FINISHED
’.’ & CR & LF
OR
address & CR & LF
not erased
Checksum error
HOST
: 05 0000 04 0000 7FFF 01 78
BOOTLOADER
: 05 0000 04 0000 7FFF 01 78 . CR LF
Blank Check ok
BOOTLOADER
: 05 0000 04 0000 7FFF 01 70 X CR LF CR LF
Blank Check with checksum error
HOST
: 05 0000 04 0000 7FFF 01 70
BOOTLOADER
: 05 0000 04 0000 7FFF 01 78 xxxx CR LF
Blank Check ok at address xxxx
HOST
: 05 0000 04 0000 7FFF 01 78



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