AT89C51AC2(2005) Просмотр технического описания (PDF) - Atmel Corporation
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AT89C51AC2 Datasheet PDF : 29 Pages
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Command Data Stream
Protocol
Figure 5. Command Flow
Host
Frequency
(MHz)
Baudrate
(kHz)
8
38400
-
57600
-
115200
-
11.059
10
2
12 14.746 16
20
24
26.6
-
OK
OK
OK
OK
OK
OK
OK
-
OK
-
OK
OK
OK
OK
OK
-
OK
-
OK
-
-
-
-
All commands are sent using the same flow. Each frame sent by the host is echoed by
the bootloader.
Bootloader
Sends first character of the
’:’
Frame
’:’
If (not received ’:’)
Else
Sends echo and start
reception
Sends frame (made of 2 ASCII
characters per Byte)
Echo analysis
Gets frame, and sends back echo
for each received Byte
10 A/T89C51AC2 UART Bootloader
4231C–CAN–03/05
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