HD6432621 Hitachi, HD6432621 Datasheet - Page 549
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
(1069 pages)
- Current page: 549 of 1069
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The method of calculating the value to be set in the bit rate register (BRR) from the operating
frequency and bit rate, on the other hand, is shown below. N is an integer, 0 N 255, and the
smaller error is specified.
N =
Table 14-6 Examples of BRR Settings for Bit Rate B (bit/s) (When n = 0 and S = 372)
bit/s
9600
Table 14-7 Maximum Bit Rate at Various Frequencies (Smart Card Interface Mode)
ø (MHz)
7.1424
10.00
10.7136
13.00
14.2848
16.00
18.00
20.00
The bit rate error is given by the following formula:
Error (%) = (
N
0
S 2
7.1424
Error
0.00
2n+1
(when S = 372)
ø
B
N
1
S 2
10.00
Error
30
Maximum Bit Rate (bit/s)
9600
13441
14400
17473
19200
21505
24194
26882
2n+1
10
6
– 1
N
1
ø
B (N + 1)
10.7136
Error
25
N
1
13.00
Error
8.99
ø (MHz)
10
N
1
6
14.2848
– 1)
Error
0.00
N
0
0
0
0
0
0
0
0
100
N
1
16.00
Error
12.01
N
2
18.00
n
0
0
0
0
0
0
0
0
Error
15.99
N
2
20.00
Error
6.60
505
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