T89C51RD2-3CSCM View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

T89C51RD2-3CSCM

0 to 40MHz Flash Programmable 8-bit Microcontroller

Atmel Corporation 

Blank Check Command

Description

Figure 28. Blank Check Flow

Host

Send Blank Check Command

Blank Check Command

Bootloader

Wait Blank Check Command

OR

Wait Checksum Error

COMMAND ABORTED

’X’ & twice (CR & LF)

OR Wait COMMAND_OK

COMMAND FINISHED

Wait Address not

erased

COMMAND FINISHED

’.’ & CR & LF

address & CR & LF

Checksum error

Send Checksum error

Flash blank

Send COMMAND_OK

Send first Address

not erased

Example

Blank Check ok

HOST

: 05 0000 04 0000 7FFF 01 78

BOOTLOADER : 05 0000 04 0000 7FFF 01 78 . CR LF

Blank Check ko at address xxxx

HOST

: 05 0000 04 0000 7FFF 01 78

BOOTLOADER : 05 0000 04 0000 7FFF 01 78 xxxx CR LF

Blank Check with checksum error

HOST

: 05 0000 04 0000 7FFF 01 70

BOOTLOADER : 05 0000 04 0000 7FFF 01 70 X CR LF CR LF

70 T89C51RD2

4243G–8051–05/03

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