
1999 Aug 19
66
Philips Semiconductors
Objective Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
Table 46
Serial port mode select
Table 47
Internal baud rate timer generated baud rates
Table 48
Timer 1 generated baud rates
SM0
SM1
MODE
DESCRIPTION
BAUD RATE
0
0
1
1
0
1
0
1
Mode 0
Mode 1
Mode 2
Mode 3
Shift register
8-bit UART
9-bit UART
9-bit UART
1
6
×
f
CLK
variable
1
32
or
1
16
×
f
CLK
variable
BAUD RATE
(KBits/s)
f
CLK
(MHz)
SPS
SMOD1
INTERNAL BAUD RATE TIMER
DEVIATION %
MODE
RELOAD VALUE
1000
750
500
250
250
38.4
38.4
19.2
9.6
4.8
0.3
0.11
16
12
8
8
8
8
16
4
16
16
16
8
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
0
1
1
1
1
0
0
0
0
0
0
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
1/3
FFFh
FFFh
FFFh
FFFh
FFEh
FF3h
FF3h
FF3h
F98h
F30h
2FBh
71Fh
0.16
0.16
0.16
0.16
0.16
0.01
0.01
BAUD RATE
(KBits/s)
f
CLK
(MHz)
SPS
SMOD1
INTERNAL BAUD RATE TIMER
DEVIATION %
MODE
RELOAD VALUE
110
110
110
110
16
12
4
4
0
0
0
0
1
0
1
0
0.01
0.03
0.06
0.21
1
1
1
2
FA15h
FDC8h
FE85h
43h