UPSD3354DV-40U6 Datasheet, PDF (111/272 Pages) STMicroelectronics – fast 8032 MCU with programmable logic

UPSD33xx
Serial UART interfaces
21.3.2
Using Timer/Counter 2 to generate baud rates
See Section 20.6.3: Baud rate generator mode on page 102.
Table 67. Commonly used baud rates generated from Timer 1
Timer 1
UART
mode
f_OSC (MHz)
Desired
baud rate
Resultant
baud rate
Baud rate
deviation
SMOD bit
in PCON
C/T Bit in
TMOD
Timer
mode in
TMOD
TH1
Reload
value
(hex)
Mode 0
Max
40.0
3.33 MHz 3.33MHz
0
X
X
X
X
Mode 2
Max
40.0
1250 kHz 1250 kHz
0
1
X
X
X
Mode 2
Max
40.0
625 kHz 625 kHz
0
0
X
X
X
) ^{Modes 1 or}
t(s ³
40.0
19200 Hz 18939 Hz -1.36%
1
0
2
F5
c Modes 1 or
u 3
40.0
9600 Hz 9470 Hz -1.36%
1
0
2
EA
rod Modes 1 or
3
36.0
19200 Hz 18570 Hz -2.34%
1
0
2
F6
P _{Modes 1 or}
te 3
33.333
57600 Hz 57870 Hz
0.47%
1
0
2
FD
le _{Modes 1 or}
o ₃
33.333
28800 Hz 28934 Hz
0.47%
1
0
2
FA
bs _{Modes 1 or}
O ₃
33.333
19200 Hz 19290 Hz
0.47%
1
0
2
F7
) ^{- Modes 1 or}
t(s ³
33.333
9600 Hz 9645 Hz
0.47%
1
0
2
EE
c ^{Modes 1 or}
u 3
24.0
9600 Hz 9615 Hz 0.16%
1
0
2
F3
d _{Modes 1 or}
ro ₃
12.0
4800 Hz 4808 Hz 0.16%
1
0
2
F3
P _{Modes 1 or}
te 3
11.0592
57600 Hz 57600 Hz
0
1
0
2
FF
le _{Modes 1 or}
o₃
11.0592
28800 Hz 28800 Hz
0
1
0
2
FE
bs _{Modes 1 or}
O3
11.0592
19200 Hz 19200 Hz
0
1
0
2
FD
Modes 1 or
3
11.0592
9600 Hz
9600 Hz
0
1
0
2
FA
Modes 1 or
3
3.6864
19200 Hz 19200 Hz
0
1
0
2
FF
Doc ID 9685 Rev 7
111/272