MC68HC705MC4 Datasheet, PDF (89/99 Pages) Motorola, Inc – Microcontrollers

MC68HC705MC4 Specification Rev. 1.5
SCP[1:0]
00
00
00
00
00
00
00
00
01
01
01
01
01
01
01
01
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
Table 10-3: Baud Rate Selection Examples
SCR[2:1:0]
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
f_OSC = 4 MHz
f_OP = 2 MHz
125 kbaud
62.50 kbaud
31.25 kbaud
15.63 kbaud
7813 Baud
3906 Baud
1953 Baud
976.6 Baud
41.67 kbaud
20.83 kbaud
10.42 kbaud
5208 Baud
2604 Baud
1302 Baud
651.0 Baud
325.5 Baud
31.25 kbaud
15.63 kbaud
7813 Baud
3906 Baud
1953 Baud
976.6 Baud
488.3 Baud
244.1 Baud
9615 Baud
4808 Baud
2404 Baud
1202 Baud
601.0 Baud
300.5 Baud
150.2 Baud
75.12 Baud
SCI Baud Rate
f_OSC = 4.194304 MHz
f_OP = 2.097152 MHz
131.1 kbaud
65.54 kbaud
32.77 kbaud
16.38 kbaud
8192 Baud
4096 Baud
2048 Baud
1024 Baud
43.69 kbaud
21.85 kbaud
10.92 kbaud
5461 Baud
2731 Baud
1365 Baud
682.7 Baud
341.3 Baud
32.77 kbaud
16.38 kbaud
8192 Baud
4906 Baud
2048 Baud
1024 Baud
512.0 Baud
256.0 Baud
10.08 kbaud
5041 Baud
2521 Baud
1260 Baud
630.2 Baud
315.1 Baud
157.5 Baud
78.77 Baud
f_OSC = 6 MHz
f_OP = 3 MHz
187.5 kbaud
93.75 kbaud
46.89 kbaud
23.44 kbaud
11.72 kbaud
5859 Baud
2930 Baud
1465 Baud
62.49 kbaud
31.26 kbaud
15.62 kbaud
7812 Baud
3906 Baud
1953 Baud
976.5 Baud
488.4 Baud
46.89 kbaud
23.44 kbaud
11.72 kbaud
5859 Baud
2930 Baud
1465 Baud
732.3 Baud
366.3 Baud
14.42 kbaud
7212 Baud
3606 Baud
1803 Baud
901.5 Baud
450.6 Baud
225.4 Baud
112.7 Baud
MOTOROLA
Page 80
Section 10: Serial Communication Interface