PIC16C774T-I/SO 查看數據表（PDF） - Microchip Technology
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PIC16C774T-I/SO Datasheet PDF : 202 Pages
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PIC16C77X
TABLE 9-3 BAUD RATES FOR SYNCHRONOUS MODE
FOSC = 20 MHz
BAUD
RATE
(K)
KBAUD
%
ERROR
16 MHz
SPBRG
value
(decimal)
KBAUD
%
ERROR
10 MHz
SPBRG
value
(decimal)
KBAUD
%
ERROR
7.15909 MHz
SPBRG
value
(decimal)
KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3
NA
-
-
NA
-
-
NA
-
-
NA
-
-
1.2
NA
-
-
NA
-
-
NA
-
-
NA
-
-
2.4
NA
-
-
NA
-
-
NA
-
-
NA
-
-
9.6
NA
-
-
NA
-
-
9.766 +1.73
255 9.622 +0.23
185
19.2 19.53 +1.73
255 19.23 +0.16
207 19.23 +0.16
129 19.24 +0.23
92
76.8 76.92 +0.16
64
76.92 +0.16
51
75.76 -1.36
32 77.82 +1.32
22
96 96.15 +0.16
51
95.24 -0.79
41 96.15 +0.16
25
94.20 -1.88
18
300 294.1 -1.96
16 307.69 +2.56
12 312.5 +4.17
7
298.3 -0.57
5
500 500
0
9
500
0
7
500
0
4
NA
-
-
HIGH 5000
-
0
4000
-
0
2500
-
0 1789.8
-
0
LOW 19.53
-
255 15.625
-
255 9.766
-
255 6.991
-
255
FOSC = 5.0688 MHz
4 MHz
3.579545 MHz
1 MHz
32.768 kHz
BAUD
SPBRG
SPBRG
SPBRG
SPBRG
SPBRG
RATE KBAUD %
value KBAUD %
value KBAUD %
value KBAUD %
value KBAUD %
value
(K)
ERROR (decimal)
ERROR (decimal)
ERROR (decimal)
ERROR (decimal)
ERROR (decimal)
0.3
NA
-
-
NA
-
-
NA
-
-
NA
-
-
0.303 +1.14 26
1.2
NA
-
-
NA
-
-
NA
-
-
1.202 +0.16 207 1.170 -2.48
6
2.4
NA
-
-
NA
-
-
NA
-
-
2.404 +0.16 103
NA
-
-
9.6
9.6
0
131 9.615 +0.16 103 9.622 +0.23 92 9.615 +0.16 25
NA
-
-
19.2 19.2
0
65 19.231 +0.16
51
19.04 -0.83
46
19.24 +0.16
12
NA
-
-
76.8 79.2 +3.13 15 76.923 +0.16 12
74.57 -2.90
11
83.34 +8.51
2
NA
-
-
96 97.48 +1.54
12
1000 +4.17
9
99.43 +3.57
8
NA
-
-
NA
-
-
300 316.8 +5.60
3
NA
-
-
298.3 -0.57
2
NA
-
-
NA
-
-
500
NA
-
-
NA
-
-
NA
-
-
NA
-
-
NA
-
-
HIGH 1267
-
0
100
-
0
894.9
-
0
250
-
0
8.192
-
0
LOW 4.950
-
255 3.906
-
255 3.496
-
255 0.9766 -
255 0.032
-
255
TABLE 9-4 BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0)
FOSC = 20 MHz
BAUD
RATE
%
(K) KBAUD ERROR
16 MHz
SPBRG
value
(decimal) KBAUD
%
ERROR
10 MHz
SPBRG
value
(decimal) KBAUD
%
ERROR
7.15909 MHz
SPBRG
value
%
(decimal) KBAUD ERROR
SPBRG
value
(decimal)
0.3
NA
-
-
NA
-
-
NA
-
-
NA
-
-
1.2 1.221 +1.73
255 1.202 +0.16
207 1.202 +0.16
129 1.203 +0.23
92
2.4 2.404 +0.16
129 2.404 +0.16
103 2.404 +0.16
64
2.380 -0.83
46
9.6 9.469 -1.36
32
9.615 +0.16
25 9.766 +1.73
15
9.322 -2.90
11
19.2 19.53 +1.73
15
19.23 +0.16
12 19.53 +1.73
7
18.64 -2.90
5
76.8 78.13 +1.73
3
83.33 +8.51
2
78.13 +1.73
1
NA
-
-
96 104.2 +8.51
2
NA
-
-
NA
-
-
NA
-
-
300 312.5 +4.17
0
NA
-
-
NA
-
-
NA
-
-
500
NA
-
-
NA
-
-
NA
-
-
NA
-
-
HIGH 312.5
-
0
250
-
0
156.3
-
0
111.9
-
0
LOW 1.221
-
255 0.977
-
255 0.6104
-
255 0.437
-
255
FOSC = 5.0688 MHz
4 MHz
3.579545 MHz
1 MHz
32.768 kHz
BAUD
SPBRG
SPBRG
SPBRG
SPBRG
SPBRG
RATE
%
value
%
value
%
value
%
value
%
value
(K) KBAUD ERROR (decimal) KBAUD ERROR (decimal) KBAUD ERROR (decimal) KBAUD ERROR (decimal) KBAUD ERROR (decimal)
0.3
0.31 +3.13 255 0.3005 -0.17 207 0.301 +0.23 185 0.300 +0.16
51
0.256 -14.67
1
1.2
1.2
0
65
1.202 +1.67
51
1.190 -0.83
46
1.202 +0.16
12
NA
-
-
2.4
2.4
0
32
2.404 +1.67
25
2.432 +1.32
22
2.232 -6.99
6
NA
-
-
9.6
9.9 +3.13
7
NA
-
-
9.322 -2.90
5
NA
-
-
NA
-
-
19.2 19.8 +3.13
3
NA
-
-
18.64 -2.90
2
NA
-
-
NA
-
-
76.8 79.2 +3.13
0
NA
-
-
NA
-
-
NA
-
-
NA
-
-
96
NA
-
-
NA
-
-
NA
-
-
NA
-
-
NA
-
-
300
NA
-
-
NA
-
-
NA
-
-
NA
-
-
NA
-
-
500
NA
-
-
NA
-
-
NA
-
-
NA
-
-
NA
-
-
HIGH 79.2
-
0 62.500 -
0
55.93
-
0
15.63
-
0
0.512
-
0
LOW 0.3094 -
255 3.906
-
255 0.2185 -
255 0.0610 -
255 0.0020 -
255
DS30275B-page 100
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