MC68HC05B4 Datasheet, PDF (92/298 Pages) Motorola, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit

Table 6-6 SCI baud rate selection
SCP1 SCP0 SCT/R2 SCT/R1 SCT/R0 NP
NT/NR 4.194304
Crystal frequency – f_OSC (MHz)
4.00 2.4576 2.00 1.8432
0
0
0
0
0
1
1 131072 125000 76800 62500 57600
0
0
0
0
1
1
2
65536 62500 38400 31250 28800
0
0
0
1
0
1
4
32768 31250 19200 15625 14400
0
0
0
1
1
1
8
16384 15625 9600
7813
7200
0
0
1
0
0
1
16
8192
7813
4800
3906
3600
0
0
1
0
1
1
32
4096
3906
2400
1953
1800
0
0
1
1
0
1
64
2048 1953 1200
977
900
0
0
1
1
1
1
128 1024
977
600
488
450
0
1
0
0
0
3
1
43691 41667 25600 20833 19200
0
1
0
0
1
3
2
21845 20833 12800 10417 9600
0
1
0
1
0
3
4
10923 10417 6400
5208
4800
6
0
1
0
1
1
3
8
5461 5208 3200 2604 2400
0
1
1
0
0
3
16
2731
2604
1600
1302
1200
0
1
1
0
1
3
32
1365 1302
800
651
600
0
1
1
1
0
3
64
683
651
400
326
300
0
1
1
1
1
3
128
341
326
200
163
150
1
0
0
0
0
4
1
32768 31250 19200 15625 14400
1
0
0
0
1
4
2
16384 15625 9600
7813
7200
1
0
0
1
0
4
4
8192 7813 4800 3906 3600
1
0
0
1
1
4
8
4096 3906 2400 1953 1800
1
0
1
0
0
4
16
2048 1953 1200
977
900
1
0
1
0
1
4
32
1024
977
600
488
450
1
0
1
1
0
4
64
512
488
300
244
225
1
0
1
1
1
4
128
256
244
150
122
113
1
1
0
0
0
13
1
10082 9615
5908
4808
4431
1
1
0
0
1
13
2
5041 4808 2954 2404 2215
1
1
0
1
0
13
4
2521 2404 1477 1202 1108
1
1
0
1
1
13
8
1260 1202
738
601
554
1
1
1
0
0
13
16
630
601
369
300
277
1
1
1
0
1
13
32
315
300
185
150
138
1
1
1
1
0
13
64
158
150
92
75
69
1
1
1
1
1
13 128
79
75
46
38
35
Note:
The examples shown above do not apply when the part is operating in slow mode (see
Section 2.4.3).
MOTOROLA
6-20
SERIAL COMMUNICATIONS INTERFACE
TPG
MC68HC05B6
Rev. 4