參數(shù)資料
型號: M38004E8SP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP64
封裝: 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64
文件頁數(shù): 168/174頁
文件大小: 1752K
代理商: M38004E8SP
2.3 Serial I/O
2-44
APPLICATION
3800 GROUP USER’S MANUAL
Table 2.3.1 shows setting examples of Baud rate generator (BRG) values and transfer bit rate values,
Figure 2.3.31 shows a setting of related registers at a transmitting side, and Figure 2.3.32 shows a
setting of related registers at a receiving side.
Table 2.3.1 Setting examples of Baud rate generator values and transfer bit rate values
BRG setting value Actual time (bps) BRG setting value
at f(XIN) = 4.9152 MHZ
600
1200
2400
4800
9600
19200
38400
76800
31250
62500
600.96
1201.92
2403.85
4807.69
9615.38
20833.33
41666.67
83333.33
31250.00
62500.00
207(CF16)
103(6716)
51(3316)
25(1916)
12(0C16)
5(0516)
2(0216)
5(0516)
15(0F16)
7(0716)
600.00
1200.00
2400.00
4800.00
9600.00
19200.00
38400.00
76800.00
191(BF16)
95(5F16)
47(2F16)
23(1716)
11(0B16)
5(0516)
2(0216)
5(0516)
600.00
1200.00
2400.00
4800.00
9600.00
19200.00
38400.00
76800.00
127(7F16)
63(3F16)
31(1F16)
15(0F16)
7(0716)
3(0316)
1(0116)
3(0316)
at f(XIN) = 8 MHZ
at f(XIN) = 7.3728 MHZ
Transfer bit
rate (bps)
(Note 1)
BRG count
source
(Note 2)
Actual time (bps)
BRG setting value
f(XIN)/4
f(XIN)
Transfer bit rate (bps) =
(BRG setting value + 1) ! 16 ! m
f(XIN)
Notes 1: Equation of transfer bit rate
m: when bit 0 of the Serial I/O control register (Address : 1A16) is set to “0,” a value of m is 1.
when bit 0 of the Serial I/O control register (Address : 1A16) is set to “1,” a value of m is 4.
2: A BRG count source is selected by bit 0 of the Serial I/O control register (Address : 1A16).
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