T89C51RD2-3CSCL ATMEL [ATMEL Corporation], T89C51RD2-3CSCL Datasheet - Page 68
T89C51RD2-3CSCL
Manufacturer Part Number
T89C51RD2-3CSCL
Description
0 to 40 MHz Flash Programmable 8-bit Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.T89C51RD2-3CSCL.pdf
(104 pages)
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Command Data Stream Protocol
Figure 26. Command Flow
Write/Program Commands
68
T89C51RD2
Sends first character of the
Frame
Sends frame (made of 2 ASCII
characters per Byte)
Echo analysis
Host
All commands are sent using the same flow. Each frame sent by the host is echoed by
the bootloader.
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
":"
":"
Gets frame, and sends back ec
for each received Byte
Else
If (not received ":")
Sends echo and start
reception
Bootloader
4243G–8051–05/03
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