at89c51rd2-smsum ATMEL Corporation, at89c51rd2-smsum Datasheet - Page 106
at89c51rd2-smsum
Manufacturer Part Number
at89c51rd2-smsum
Description
8-bit Flash Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51RD2-SMSUM.pdf
(137 pages)
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24.9.5
Figure 24-9. Write/Program Flow
106
AT89C51RD2/ED2
COMMAND FINISHED
Write/Program Commands Description
Wait COMMAND_OK
Send Write Command
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND ABORTED
Wait Security Error
This flow is common to the following frames:
• Flash/EEPROM Programming Data Frame
• EOF or Atmel Frame (only Programming Atmel Frame)
• Config Byte Programming Data Frame
• Baud Rate Frame
’X’ & CR & LF
Write Command
’P’ & CR & LF
’.’ & CR & LF
Send Checksum Error
Send Security Error
Bootloader
Wait Write Command
Send COMMAND_OK
Wait Programming
Checksum Error
NO_SECURITY
4235J–8051–01/08
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