Datasheet

 1996 Microchip Technology Inc. DS30412C-page 87
PIC17C4X
TABLE 13-3: BAUD RATES FOR SYNCHRONOUS MODE
BAUD
RATE
(K)
F
OSC
= 33 MHz
SPBRG
value
(decimal)
F
OSC
= 25 MHz
SPBRG
value
(decimal)
F
OSC
= 20 MHz
SPBRG
value
(decimal)
F
OSC
= 16 MHz
SPBRG
value
(decimal)KBAUD %ERROR KBAUD %ERROR KBAUD %ERROR KBAUD %ERROR
0.3 NA — — NA — — NA — — NA — —
1.2 NA — — NA — — NA — — NA — —
2.4 NA — — NA — — NA — — NA — —
9.6 NA — — NA — — NA — — NA — —
19.2 NA — — NA — — 19.53 +1.73 255 19.23 +0.16 207
76.8 77.10 +0.39 106 77.16 +0.47 80 76.92 +0.16 64 76.92 +0.16 51
96 95.93 -0.07 85 96.15 +0.16 64 96.15 +0.16 51 95.24 -0.79 41
300 294.64 -1.79 27 297.62 -0.79 20 294.1 -1.96 16 307.69 +2.56 12
500 485.29 -2.94 16 480.77 -3.85 12 500 0 9 500 0 7
HIGH 8250 — 0 6250 — 0 5000 — 0 4000 — 0
LOW 32.22 — 255 24.41 — 255 19.53 — 255 15.625 — 255
BAUD
RATE
(K)
F
OSC
= 10 MHz
SPBRG
value
(decimal)
F
OSC
= 7.159 MHz
SPBRG
value
(decimal)
F
OSC
= 5.068 MHz
SPBRG
value
(decimal)KBAUD %ERROR KBAUD %ERROR KBAUD %ERROR
0.3 NA — — NA — — NA — —
1.2 NA — — NA — — NA — —
2.4 NA — — NA — — NA — —
9.6 9.766 +1.73 255 9.622 +0.23 185 9.6 0 131
19.2 19.23 +0.16 129 19.24 +0.23 92 19.2 0 65
76.8 75.76 -1.36 32 77.82 +1.32 22 79.2 +3.13 15
96 96.15 +0.16 25 94.20 -1.88 18 97.48 +1.54 12
300 312.5 +4.17 7 298.3 -0.57 5 316.8 +5.60 3
500 500 0 4 NA — —NA— —
HIGH 2500 — 0 1789.8 — 0 1267 — 0
LOW 9.766 — 255 6.991 — 255 4.950 — 255
BAUD
RATE
(K)
F
OSC
= 3.579 MHz
SPBRG
value
(decimal)
F
OSC
= 1 MHz
SPBRG
value
(decimal)
F
OSC
= 32.768 kHz
SPBRG
value
(decimal)KBAUD %ERROR KBAUD %ERROR KBAUD %ERROR
0.3 NA — — NA — — 0.303 +1.14 26
1.2 NA — — 1.202 +0.16 207 1.170 -2.48 6
2.4 NA — — 2.404 +0.16 103 NA — —
9.6 9.622 +0.23 92 9.615 +0.16 25 NA — —
19.2 19.04 -0.83 46 19.24 +0.16 12 NA — —
76.8 74.57 -2.90 11 83.34 +8.51 2 NA — —
96 99.43 _3.57 8 NA — — NA — —
300 298.3 -0.57 2 NA — — NA — —
500 NA — — NA — — NA — —
HIGH 894.9 — 0 250 — 0 8.192 — 0
LOW 3.496 — 255 0.976 — 255 0.032 — 255