HD6475328-CP10 Datasheet, PDF (272/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

Table 14-3 Examples of BRR Settings in Asynchronous Mode (4)
Bit
Rate n
110 2
150 2
300 1
600 1
1200 0
2400 0
4800 0
9600 0
19200 0
31250 —
38400 0
14.7456
Error
N (%)
130 –0.07
95 0
191 0
95 0
191 0
95 0
47 0
23 0
11 0
——
50
XTAL Frequency (MHz)
16
19.6608
Error
Error
n N (%) n N (%)
2 141 +0.03 2 174 –0.26
2 103 +0.16 2 127 0
1 207 +0.16 1 255 0
1 103 +0.16 1 127 0
0 207 +0.16 0 255 0
0 103 +0.16 0 127 0
0 51 +0.16 0 63 0
0 25 +0.16 0 31 0
0 12 +0.16 0 15 0
07
0
0 9 –1.70
—— —
07 0
20
Error
n N (%)
3 43 +0.88
2 129 +0.16
2 64 +0.16
1 129 +0.16
1 64 +0.16
0 129 +0.16
0 64 +0.16
0 32 –1.36
0 15 +1.73
09
0
07
+1.73
B = OSC × 106/[64 × 22n × (N + 1)]
B:
N:
OSC :
n:
Bit rate
BRR value (0 ≤ N ≤ 255)
Crystal oscillator frequency in MHz
Internal clock source (0, 1, 2, or 3)
The meaning of n is given by the table below:
n
CKS1 CKS0 Clock
0
0
0
ø
1
0
1
ø/4
2
1
0
ø/16
3
1
1
ø/64
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