Manualshelf

Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller PDIP 40 8-Bit 40 MHz I/O number 33
151152153154155156157158159160
1999-2013 Microchip Technology Inc. DS39026D-page 153
PIC18CXX2
TABLE 15-4: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0)
BAUD
RATE
(K)
F
OSC = 40 MHz FOSC = 20 MHz FOSC = 16 MHz FOSC = 10 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(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)
F
OSC = 7.15909 MHz FOSC = 5.0688 MHz FOSC = 4 MHz FOSC = 3.579545 MHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
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)
F
OSC = 1 MHz FOSC = 32.768 kHz
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
Actual
Rate
(K)
%
Error
SPBRG
value
(decimal)
0.3 0.300 +0.16 51 0.256 -14.67 1
1.2 1.202 +0.16 12 NA — —
2.4 2.232 -6.99 6 NA — —
9.6 NA — — NA — —
19.2 NA — — NA — —
76.8 NA — — NA — —
96 NA — — NA — —
300 NA — — NA — —
500 NA — — NA — —
HIGH 15.63 — 0 0.512 — 0
LOW 0.0610 — 255 0.0020 — 255