hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 19

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Item
10.2.8 Bit Rate
Register (BRR)
Table 10.5 Maximum
Bit Rate for Each
Frequency
(Asynchronous Mode)
10.2.8 Bit Rate
Register (BRR)
Table 10.6 Examples
of BRR Settings for
Various Bit Rates
(Synchronous
Mode) (2)
Page
350
352
Revision (See Manual for Details)
Table amended
Table amended
Notes amended
Notes: The value set in BRR is given by the following equation:
OSC (MHz)
0.0384 *
2
2.4576
4
10
16
20
Bit Rate
(bit/s)
200
250
300
500
1K
2.5K
5K
10K
25K
50K
100K
250K
500K
1M
where
N =
n
0
2
0
0
0
0
0
0
0
0
0
0
0
—
(4 • 2
B: Bit rate (bit/s)
N: Baud rate generator BRR setting (0 ≤ N ≤ 255)
φ: System clock frequency
n: Baud rate generator input clock number (n = 0, 2, or 3)
φ φ φ φ (MHz)
0.0192
1
1.2288
2
5
8
10
φ
(The relation between n and the clock is shown in table 10.7.)
2n
• B)
N
12499
624
8332
4999
2499
999
499
249
99
49
24
9
4
—
10 MHz
φ
– 1
Error
0
0
0
0
0
0
0
0
0
0
0
0
0
—
Rev. 7.00 Mar 10, 2005 page xix of xlii
Maximum Bit Rate
(bit/s)
600
31250
38400
62500
156250
250000
312500
n
0
0
0
0
0
0
0
Setting
N
0
0
0
0
0
0
0