PIC17C7XX Datasheet, PDF (120/328 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
TABLE 14-5: BAUD RATES FOR ASYNCHRONOUS MODE
FOSC = 33 MHz
BAUD
RATE
(K) KBAUD %ERROR
FOSC = 25 MHz
SPBRG
value
(decimal) KBAUD %ERROR
FOSC = 20 MHz
SPBRG
value
(decimal) KBAUD %ERROR
FOSC = 16 MHz
SPBRG
value
(decimal) KBAUD %ERROR
SPBRG
value
(decimal)
0.3
NA
—
—
NA
—
—
NA
—
—
NA
—
—
1.2
NA
—
—
NA
—
—
1.221
+1.73
255
1.202
+0.16
207
2.4 2.398
-0.07
214
2.396
0.14
162
2.404
+0.16
129
2.404
+0.16
103
9.6 9.548
-0.54
53
9.53
-0.76
40
9.469
-1.36
32
9.615
+0.16
25
19.2 19.09
-0.54
26
19.53
+1.73
19
19.53
+1.73
15
19.23
+0.16
12
76.8 73.66
-4.09
6
78.13
+1.73
4
78.13
+1.73
3
83.33
+8.51
2
96 103.12 +7.42
4
97.65
+1.73
3
104.2
+8.51
2
NA
—
—
300 257.81 -14.06
1
390.63 +30.21
0
312.5
+4.17
0
NA
—
—
500 515.62 +3.13
0
NA
—
—
NA
—
—
NA
—
—
HIGH 515.62
—
0
—
—
0
312.5
—
0
250
—
0
LOW 2.014
—
255
1.53
—
255
1.221
—
255
0.977
—
255
BAUD
RATE
(K)
0.3
1.2
2.4
9.6
19.2
76.8
96
300
500
HIGH
LOW
BAUD
RATE
(K)
0.3
1.2
2.4
9.6
19.2
76.8
96
300
500
HIGH
LOW
FOSC = 10 MHz
KBAUD
NA
1.202
2.404
9.766
19.53
78.13
NA
NA
NA
156.3
0.610
%ERROR
—
+0.16
+0.16
+1.73
+1.73
+1.73
—
—
—
—
—
FOSC = 3.579 MHz
KBAUD
0.301
1.190
2.432
9.322
18.64
NA
NA
NA
NA
55.93
0.218
%ERROR
+0.23
-0.83
+1.32
-2.90
-2.90
—
—
—
—
—
—
SPBRG
value
(decimal)
—
129
64
15
7
1
—
—
—
0
255
FOSC = 7.159 MHz
KBAUD
NA
1.203
2.380
9.322
18.64
NA
NA
NA
NA
111.9
0.437
%ERROR
—
_0.23
-0.83
-2.90
-2.90
—
—
—
—
—
—
SPBRG
value
(decimal)
185
46
22
5
2
—
—
—
—
0
255
FOSC = 1 MHz
KBAUD
0.300
1.202
2.232
NA
NA
NA
NA
NA
NA
15.63
0.061
%ERROR
+0.16
+0.16
-6.99
—
—
—
—
—
—
—
—
SPBRG
value
(decimal)
—
92
46
11
5
—
—
—
—
0
255
FOSC = 5.068 MHz
KBAUD
0.31
1.2
2.4
9.9
19.8
79.2
NA
NA
NA
79.2
0.309
%ERROR
+3.13
0
0
-3.13
+3.13
+3.13
—
—
—
—
—
SPBRG
value
(decimal)
51
12
6
—
—
—
—
—
—
0
255
FOSC = 32.768 kHz
KBAUD
0.256
NA
NA
NA
NA
NA
NA
NA
NA
0.512
0.002
%ERROR
-14.67
—
—
—
—
—
—
—
—
—
—
SPBRG
value
(decimal)
255
65
32
7
3
0
—
—
—
0
255
SPBRG
value
(decimal)
1
—
—
—
—
—
—
—
—
0
255
DS30289A-page 120
© 1998 Microchip Technology Inc.