
PIC16C745/765
DS41124C-page 80
Preliminary
2000 Microchip Technology Inc.
TABLE 11-4:
BAUD RATES FOR
ASYNCHRONOUS MODE
(BRGH = 1)
TABLE 11-5:
REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR
Desired
Baud
24 MHz
Actual
Baud
% of Error
SPBRG
300
1200
2400
4800
9600
9615.38
0.16
155
19200
19230.77
0.16
77
38400
38461.54
0.16
38
57600
57692.31
0.16
25
115200
115384.62
0.16
12
230400
250000.00
8.51
5
460800
500000.00
8.51
2
921600
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR,
BOR
Value on all
other resets
98h
TXSTA
CSRC
TX9
TXEN
SYNC
—
BRGH
TRMT
TX9D
0000 -010
18h
RCSTA
SPEN
RX9
SREN
CREN
—
FERR
OERR RX9D
0000 -00x
99h
SPBRG
Baud Rate Generator Register
0000 0000
Legend: x = unknown, - = unimplemented read as '0'. Shaded cells are not used by the BRG.
745cov.book Page 80 Wednesday, August 2, 2000 8:24 AM