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AT89C51ID2-RDTIM 数据表(PDF) 130 Page - ATMEL Corporation

部件名 AT89C51ID2-RDTIM
功能描述  8-bit Flash Microcontroller
PDF  159 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT89C51ID2-RDTIM 数据表(HTML) 130 Page - ATMEL Corporation

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



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