參數(shù)資料
型號: MQ80C52CXXX-30/883D
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 30 MHz, MICROCONTROLLER, CQFP44
封裝: CERAMIC, QFP-44
文件頁數(shù): 42/80頁
文件大小: 5152K
代理商: MQ80C52CXXX-30/883D
242
XMEGA A [MANUAL]
8077I–AVR–11/2012
Figure 21-9. Fractional baud rate example.
Table 21-5. USART baud rate.
BSEL=0
BSCALE=0
fBAUD=fPER/8
clkBAUD8
BSEL=3
BSCALE=-6
fBAUD=fPER/8.375
clkBAUD8
BSEL=3
BSCALE=-4
fBAUD=fPER/9.5
Extra clock cycle added
Baud
fOSC = 32.0000MHz
rate
(bps)
CLK2X = 0
CLK2X = 1
BSEL
BSCALE
Error [%]
BSEL
BSCALE
Error [%]
2400
12
6
0.2
12
7
0.2
4800
12
5
0.2
12
6
0.2
9600
12
4
0.2
12
5
0.2
14.4k
34
2
0.8
34
3
0.8
138
0
-0.1
138
1
-0.1
19.2k
12
3
0.2
12
4
0.2
28.8k
34
1
-0.8
34
2
-0.8
137
-1
-0.1
138
0
-0.1
38.4k
12
2
0.2
12
3
0.2
57.6k
34
0
-0.8
34
1
-0.8
135
-2
-0.1
137
-1
-0.1
76.8k
12
1
0.2
12
2
0.2
115.2k
33
-1
-0.8
34
0
-0.8
131
-3
-0.1
135
-2
-0.1
230.4k
31
-2
-0.8
33
-1
-0.8
123
-4
-0.1
131
-3
-0.1
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