PIC16F627A_05 Datasheet, PDF (78/180 Pages) Microchip Technology – Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F627A/628A/648A
TABLE 12-5: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 1)
BAUD ^{FOSC = 20 MHz}
RATE (K) _{KBAUD ERROR}
SPBRG 16 MHz
value
(decimal) ^KBAUD
ERROR
SPBRG 10 MHz
value
(decimal) ^KBAUD
9600
9.615
+0.16%
129
9.615
+0.16%
103
9.615
19200
19.230
+0.16%
64
19.230
+0.16%
51
18.939
38400
37.878
-1.36%
32
38.461
+0.16%
25
39.062
57600
56.818
-1.36%
21
58.823
+2.12%
16
56.818
115200
113.636 -1.36%
10
111.111
-3.55%
8
125
250000
250
0
4
250
0
3
NA
625000
625
0
1
NA
—
—
625
1250000
1250
0
0
NA
—
—
NA
ERROR
+0.16%
-1.36%
+1.7%
-1.36%
+8.51%
—
0
—
SPBRG
value
(decimal)
64
32
15
10
4
—
0
—
BAUD ^{FOSC = 7.16 MHz}
RATE (K) _{KBAUD ERROR}
9600
19200
38400
57600
115200
250000
625000
1250000
9.520
19.454
37.286
55.930
111.860
NA
NA
NA
-0.83%
+1.32%
-2.90%
-2.90%
-2.90%
—
—
—
SPBRG 5.068 MHz
value
(decimal) ^KBAUD
46
9598.485
22
18632.35
11
39593.75
7
52791.67
3
105583.3
—
316750
—
NA
—
NA
ERROR
0.016%
-2.956%
3.109%
-8.348%
-8.348%
26.700%
—
—
SPBRG 4 MHz
value
(decimal) ^KBAUD
32
9615.385
16
19230.77
7
35714.29
5
62500
2
125000
0
250000
—
NA
—
NA
ERROR
0.160%
0.160%
-6.994%
8.507%
8.507%
0.000%
—
—
SPBRG
value
(decimal)
25
12
6
3
1
0
—
—
BAUD ^{FOSC = 3.579 MHz}
RATE (K) _{KBAUD ERROR}
SPBRG 1 MHz
value
(decimal) ^KBAUD
9600
9725.543 1.308%
22
19200
18640.63 -2.913%
11
38400
37281.25 -2.913%
5
57600
55921.88 -2.913%
3
115200
111243.8 -2.913%
1
250000
223687.5 -10.525%
0
625000
NA
—
—
1250000
NA
—
—
8.928
20833.3
31250
62500
NA
NA
NA
NA
ERROR
SPBRG 32.768 kHz
value
(decimal) ^KBAUD
ERROR
-6.994%
6
8.507%
2
-18.620%
1
+8.507
0
—
—
—
—
—
—
—
—
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
SPBRG
value
(decimal)
NA
NA
NA
NA
NA
NA
NA
NA
DS40044D-page 76
© 2005 Microchip Technology Inc.