AT89C51ID2-SMSIM ATMEL [ATMEL Corporation], AT89C51ID2-SMSIM Datasheet - Page 130

• Manufacturer Part Number: AT89C51ID2-SMSIM
• Description: 8-bit Flash Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

Table 94. Autobaud Performances (Continued)
Command Data Stream
Protocol
Figure 52. Command Flow
130
Frequency (MHz)
Baudrate (kHz)
4800
9600
19200
38400
57600
115200
AT89C51ID2
Sends first character of the
Frame
Sends frame (made of 2 ASCII
characters per byte)
Echo analysis
Host
1.8432
OK
OK
OK
-
-
-
2
All commands are sent using the same flow. Each frame sent by the host is echoed by
the bootloader.
OK
OK
OK
-
-
-
2.4576
OK
OK
OK
OK
OK
OK
3
":"
":"
OK
OK
OK
OK
-
-
3.6864
OK
OK
OK
OK
OK
OK
4
OK
OK
OK
OK
OK
Gets frame, and sends back ech
for each received byte
-
Else
If (not received ":")
Sends echo and start
reception
Bootloader
5
OK
OK
OK
OK
OK
-
6
OK
OK
OK
OK
OK
-
4289A–8051–09/03
7.3728
OK
OK
OK
OK
OK
-