參數(shù)資料
型號: T89C51RD2-SMSIL
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 0 to 40 MHz Flash Programmable 8-bit Microcontroller
中文描述: 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQCC68
封裝: PLASTIC, LCC-68
文件頁數(shù): 67/104頁
文件大?。?/td> 798K
代理商: T89C51RD2-SMSIL
67
T89C51RD2
4243G
8051
05/03
Autobaud Performances
The ISP feature allows a wide range of baud rates in the user application. It is also
adaptable to a wide range of oscillator frequencies. This is accomplished by measuring
the bit-time of a single bit in a received character. This information is then used to pro-
gram the baud rate in terms of timer counts based on the oscillator frequency. The ISP
feature requires that an initial character (an uppercase U) be sent to the T89C51RD2 to
establish the baud rate. Table 39 shows the autobaud capability.
Table 39.
Autobaud Performances (Bootloader Revision 2.4)
Frequency (MHz)
Baudrate (bit/s)
1.8432
2
2.4576
3
3.6864
4
5
6
7.3728
8
4800
OK
OK
OK
OK
OK
OK
OK
OK
OK
-
9600
OK
OK
OK
OK
OK
OK
-
OK
OK
OK
19200
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
38400
-
OK
-
-
OK
OK
OK
OK
OK
OK
57600
-
-
-
-
OK
-
-
-
OK
-
115200
-
-
-
-
-
-
-
-
OK
-
Frequency (MHz)
Baudrate (bit/s)
10
11.0592
12
14.318
14.746
16
20
24
26.6
32
4800
OK
OK
OK
OK
OK
-
-
-
-
-
9600
OK
OK
OK
OK
OK
OK
OK
OK
OK
-
19200
-
OK
OK
OK
OK
OK
OK
OK
OK
OK
38400
OK
OK
OK
OK
OK
OK
OK
OK
57600
-
OK
-
OK
OK
OK
OK
OK
OK
115200
-
OK
-
OK
-
-
-
-
OK
相關(guān)PDF資料
PDF描述
T89C51RD2-SMSIM 0 to 40 MHz Flash Programmable 8-bit Microcontroller
T89C51RD2-SMUCM 0 to 40 MHz Flash Programmable 8-bit Microcontroller
T89C51RD2-SMUIM 0 to 40 MHz Flash Programmable 8-bit Microcontroller
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