HD6432670 Hitachi, HD6432670 Datasheet - Page 696

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Table 15.3 shows sample N settings in BRR in normal asynchronous mode. Table 15.4 shows the
maximum bit rate for each frequency in normal asynchronous mode. Table 15.6 shows sample N
settings in BRR in clocked synchronous mode. Table 15.8 shows sample N settings in BRR in
Smart Card interface mode. In Smart Card interface mode, S (the number of basic clock periods in
a 1-bit transfer interval) can be selected. For details, refer to section 15.7.4, Receive Data
Sampling Timing and Reception Margin. Tables 15.5 and 15.7 show the maximum bit rates with
external clock input.
Table 15.3 BRR Settings for Various Bit Rates (Asynchronous Mode) (1)
Bit Rate
(bit/s)
110
150
300
600
1200
2400
4800
9600
19200
31250
38400
Rev. 2.0, 04/02, page 650 of 906
n
1
1
0
0
0
0
0
—
—
0
—
N
141
103
207
103
51
25
12
—
—
1
—
2
Error
(%)
0.03
0.16
0.16
0.16
0.16
0.16
0.16
—
—
0.00
—
n
1
1
0
0
0
0
0
0
—
—
—
Operating Frequency ø (MHz)
2.097152
N
148
108
217
108
54
26
13
6
—
—
—
Error
(%)
–0.04
0.21
0.21
0.21
–0.70
1.14
–2.48
–2.48
—
—
—
n
1
1
0
0
0
0
0
0
0
—
0
2.4576
N
174
127
255
127
63
31
15
7
3
—
1
0.00
Error
(%)
–0.26 1
0.00
0.00
0.00
0.00
0.00
0.00
0.00
—
0.00
0
0
0
0
0
—
n
1
1
0
0
N
212
155
77
155
77
38
19
9
4
2
—
3
Error
(%)
0.03
0.16
0.16
0.16
0.16
0.16
–2.34
–2.34
–2.34
0.00
—