Kawasaki 80C152 User Manual
Page 29
KS152JB Universal Communications Controller
Technical Specifications
Kawasaki LSI USA, Inc.
Page 29 of 120 Ver. 0.9 KS152JB2
in auto-reload mode. In such a case the baud rate is given by
Mode 1,3 baud rate = 2
(SMOD - 5)
X Oscillator Frequency / (12 x [256 - TH1])
It is also possible to achieve very low baud rates by putting Timer 1 in Mode1 as a 16 bit timer and
enabling its interrupt. The Timer interrupt is used to reload the Timer 1 with a 16 bit value using
software methods. A list of commonly used baud rates and how they can be achieved is shown in
table 4
Table 7: Timer 1 generated commonly used Baud rates
Baud Rate
fosc
SMOD
C/T
Mode
Reload
Value
Mode 0 Max 1 MHZ
12 MHZ
X
X
X
X
Mode 2 Max 375K
12 MHZ
1
X
X
X
Modes 1,3 62.5K
12 MHZ
1
0
2
FFh
19.2 K
11.059 MHZ
1
0
2
FDh
9.6 K
11.059 MHZ
0
0
2
FDh
4.8 K
11.059 MHZ
0
0
2
FAh
2.4 K
11.059 MHZ
0
0
2
F4h
1.2 K
11.059 MHZ
0
0
2
E8h
137.5
11.059 MHZ
0
0
2
1Dh
110
6 MHZ
0
0
2
72h
110
12 MHZ
0
0
2
FEEBh