PIC18CXX2_13 Datasheet, PDF (153/304 Pages) Microchip Technology – High Performance Microcontrollers with 10-bit A/D

PIC18CXX2
TABLE 15-4: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0)
BAUD
RATE
(K)
FOSC = 40 MHz
FOSC = 20 MHz
FOSC = 16 MHz
FOSC = 10 MHz
Actual
Rate
(K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG Actual
value Rate
(decimal) (K)
%
Error
SPBRG
value
(decimal)
0.3
NA
—
—
NA
—
—
NA
—
—
NA
—
—
1.2
NA
—
—
1.221 +1.73
255 1.202 +0.16
207 1.202 +0.16
129
2.4 2.44 -1.70
255 2.404 +0.16
129 2.404 +0.16
103 2.404 +0.16
64
9.6 9.62 -0.16
64
9.469 -1.36
32
9.615 +0.16
25
9.766 +1.73
15
19.2 18.94 +1.38
32
19.53 +1.73
15
19.23 +0.16
12
19.53 +1.73
7
76.8 78.13 -1.70
7
78.13 +1.73
3
83.33 +8.51
2
78.13 +1.73
1
96 89.29 +7.52
6
104.2 +8.51
2
NA
—
—
NA
—
—
300 312.50 -4.00
1
312.5 +4.17
0
NA
—
—
NA
—
—
500 625.00 -20.00
0
NA
—
—
NA
—
—
NA
—
—
HIGH 2.44
—
255 312.5 —
0
250
—
0
156.3 —
0
LOW 625.00 —
0
1.221 —
255 0.977 —
255 0.6104 —
255
BAUD
RATE
(K)
FOSC = 7.15909 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 5.0688 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 4 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 3.579545 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3
NA
—
—
0.31 +3.13
255 0.3005 -0.17
207 0.301 +0.23
185
1.2 1.203 +0.23
92
1.2
0
65
1.202 +1.67
51
1.190 -0.83
46
2.4 2.380 -0.83
46
2.4
0
32
2.404 +1.67
25
2.432 +1.32
22
9.6 9.322 -2.90
11
9.9 +3.13
7
NA
—
—
9.322 -2.90
5
19.2 18.64 -2.90
5
19.8 +3.13
3
NA
—
—
18.64 -2.90
2
76.8 NA
—
—
79.2 +3.13
0
NA
—
—
NA
—
—
96
NA
—
—
NA
—
—
NA
—
—
NA
—
—
300 NA
—
—
NA
—
—
NA
—
—
NA
—
—
500 NA
—
—
NA
—
—
NA
—
—
NA
—
—
HIGH 111.9 —
0
79.2
—
0
62.500 —
0
55.93 —
0
LOW 0.437 —
255 0.3094 —
255 3.906 —
255 0.2185 —
255
BAUD
RATE
(K)
FOSC = 1 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
FOSC = 32.768 kHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3
1.2
2.4
9.6
19.2
76.8
96
300
500
HIGH
LOW
0.300
1.202
2.232
NA
NA
NA
NA
NA
NA
15.63
0.0610
+0.16
+0.16
-6.99
—
—
—
—
—
—
—
—
51
0.256 -14.67
1
12
NA
—
—
6
NA
—
—
—
NA
—
—
—
NA
—
—
—
NA
—
—
—
NA
—
—
—
NA
—
—
—
NA
—
—
0
0.512 —
0
255 0.0020 —
255
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DS39026D-page 153