t89c51rd2-slscl ATMEL Corporation, t89c51rd2-slscl Datasheet - Page 69

• Manufacturer Part Number: t89c51rd2-slscl
• Description: 0 To 40 Mhz Flash Programmable 8-bit Microcontroller
• Manufacturer: ATMEL Corporation

Description
Figure 27. Write/Program Flow
Example
4243G–8051–05/03
COMMAND FINISHED
Wait COMMAND_OK
Send Write Command
OR
Host
OR
COMMAND ABORTED
COMMAND ABORTED
Wait Checksum Error
Wait Security Error
Programming Data (write 55h at address 0010h in the Flash)
Programming Atmel function (write SSB to level 2)
Writing Frame (write BSB to 55h)
HOST
BOOTLOADER
HOST
BOOTLOADER
HOST
BOOTLOADER
’X’ & twice (CR & LF)
Write Command
’P’ & CR & LF
’.’ & CR & LF
: 01 0010 00 55 9A
: 01 0010 00 55 9A . CR LF
: 02 0000 03 05 01 F5
: 02 0000 03 05 01 F5. CR LF
: 03 0000 03 06 00 55 9F
: 03 0000 03 06 00 55 9F . CR LF
Send Checksum error
Send Security error
Bootloader
Wait Write Command
Send COMMAND_OK
Wait Programming
Checksum error
NO_SECURITY
T89C51RD2
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