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AT89C51ED2-RDTIM Datasheet(PDF) 109 Page - ATMEL Corporation |
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AT89C51ED2-RDTIM Datasheet(HTML) 109 Page - ATMEL Corporation |
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109 / 137 page  109 AT89C51RD2/ED2 4235E–8051–04/04 Write/Program Commands Description 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 Figure 48. Write/Program Flow Example Host Bootloader Write Command ’X’ & CR & LF NO_SECURITY Wait Write Command Checksum Error Wait Programming Send Security Error Send COMMAND_OK Send Write Command Wait Checksum Error Wait COMMAND_OK Wait Security Error OR COMMAND ABORTED COMMAND FINISHED Send Checksum Error COMMAND ABORTED ’P’ & CR & LF OR ’.’ & CR & LF HOST : 01 0010 00 55 9A BOOTLOADER : 01 0010 00 55 9A . CR LF Programming Data (write 55h at address 0010h in the Flash) HOST : 02 0000 03 05 01 F5 BOOTLOADER : 02 0000 03 05 01 F5. CR LF Programming Atmel function (write SSB to level 2) HOST : 03 0000 03 06 00 55 9F BOOTLOADER : 03 0000 03 06 00 55 9F . CR LF Writing Frame (write BSB to 55h) |
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