Hitachi H8/3008 Hardware Manual page 352

Table 12.5 shows the maximum bit rates in asynchronous mode for various system clock
frequencies. Tables 12.6 and 12.7 show the maximum bit rates with external clock input.
Table 12.5 Maximum Bit Rates for Various Frequencies (Asynchronous Mode)
φ (MHz)
2
2.097152
2.4576
3
3.6864
4
4.9152
5
6
6.144
7.3728
8
9.8304
10
12
12.288
14
14.7456
16
17.2032
18
20
25
336
Maximum Bit Rate (bit/s)
62500
65536
76800
93750
115200
125000
153600
156250
187500
192000
230400
250000
307200
312500
375000
384000
437500
460800
500000
537600
562500
625000
781250
Settings
n
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0
0
0
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0
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0
0
0
0
0
0
0
0
N
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0