Manualshelf

Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SSOP 20 8-Bit 20 MHz I/O number 16
919293949596979899100
PIC16F87/88
DS30487D-page 100 2002-2013 Microchip Technology Inc.
TABLE 11-3: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0)
BAUD
RATE
(K)
F
OSC = 20 MHz FOSC = 16 MHz FOSC = 10 MHz
KBAUD
%
ERROR
SPBRG
value
(decimal)
KBAUD
%
ERROR
SPBRG
value
(decimal)
KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3—————————
1.2 1.221 +1.75 255 1.202 +0.17 207 1.202 +0.17 129
2.4 2.404 +0.17 129 2.404 +0.17 103 2.404 +0.17 64
9.6 9.766 +1.73 31 9.615 +0.16 25 9.766 +1.73 15
19.2 19.531 + 1.72 15 19.231 +0.16 12 19.531 +1.72 7
28.8 31.250 +8.51 9 27.778 -3.55 8 31.250 +8.51 4
33.6 34.722 +3.34 8 35.714 +6.29 6 31.250 -6.99 4
57.6 62.500 +8.51 4 62.500 +8.51 3 52.083 -9.58 2
HIGH 1.221 — 255 0.977 — 255 0.610 — 255
LOW 312.500 — 0 250.000 — 0 156.250 — 0
BAUD
RATE
(K)
F
OSC = 4 MHz FOSC = 3.6864 MHz
KBAUD
%
ERROR
SPBRG
value
(decimal) KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3 0.300 0 207 0.3 0 191
1.2 1.202 +0.17 51 1.2 0 47
2.4 2.404 +0.17 25 2.4 0 23
9.6 8.929 +6.99 6 9.6 0 5
19.2 20.833 +8.51 2 19.2 0 2
28.8 31.250 +8.51 1 28.8 0 1
33.6 — — — — — —
57.6 62.500 +8.51 0 57.6 0 0
HIGH 0.244 — 255 0.225 — 255
LOW 62.500 — 0 57.6 — 0
TABLE 11-4: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 1)
BAUD
RATE
(K)
F
OSC = 20 MHz FOSC = 16 MHz FOSC = 10 MHz
KBAUD
%
ERROR
SPBRG
value
(decimal)
KBAUD
%
ERROR
SPBRG
value
(decimal)
KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3—————————
1.2—————————
2.4 — — — — — — 2.441 +1.71 255
9.6 9.615 +0.16 129 9.615 +0.16 103 9.615 +0.16 64
19.2 19.231 +0.16 64 19.231 +0.16 51 19.531 +1.72 31
28.8 29.070 +0.94 42 29.412 +2.13 33 28.409 -1.36 21
33.6 33.784 +0.55 36 33.333 -0.79 29 32.895 -2.10 18
57.6 59.524 +3.34 20 58.824 +2.13 16 56.818 -1.36 10
HIGH 4.883 — 255 3.906 — 255 2.441 — 255
LOW 1250.000 — 0 1000.000 — 0 625.000 — 0
BAUD
RATE
(K)
F
OSC = 4 MHz FOSC = 3.6864 MHz
KBAUD
%
ERROR
SPBRG
value
(decimal) KBAUD
%
ERROR
SPBRG
value
(decimal)
0.3——————
1.2 1.202 +0.17 207 1.2 0 191
2.4 2.404 +0.17 103 2.4 0 95
9.6 9.615 +0.16 25 9.6 0 23
19.2 19.231 +0.16 12 19.2 0 11
28.8 27.798 -3.55 8 28.8 0 7
33.6 35.714 +6.29 6 32.9 -2.04 6
57.6 62.500 +8.51 3 57.6 0 3
HIGH 0.977 — 255 0.9 — 255
LOW 250.000 — 0 230.4 — 0