H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 597

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

13.2.8
BRR is an 8-bit register that sets the serial transfer bit rate in accordance with the baud rate
generator operating clock selected by bits CKS1 and CKS0 in SMR.
BRR can be read or written to by the CPU at all times.
BRR is initialized to H'FF by a reset, and in standby mode or module stop mode.
As baud rate generator control is performed independently for each channel, different values can
be set for each channel.
Table 13.3 shows sample BRR settings in asynchronous mode, and table 13.4 shows sample BRR
settings in clocked synchronous mode.
Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode)
Bit Rate
(bit/s)
110
150
300
600
1200
2400
4800
9600
19200
31250
38400
Bit
Initial value
R/W
Bit Rate Register (BRR)
:
:
:
n
1
1
0
0
0
0
0
0
0
0
0
R/W
7
1
N
141
103
207
103
51
25
12
6
2
1
1
= 2 MHz
Error
(%)
0.03
0.16
0.16
0.16
0.16
0.16
0.16
—
—
0.00
—
R/W
6
1
n
1
1
0
0
0
0
0
0
0
0
0
= 2.097152 MHz
R/W
5
1
N
148
108
217
108
54
26
13
6
2
1
1
Section 13 Serial Communication Interface (SCI)
Error
(%)
–0.04 1
0.21
0.21
0.21
–0.70 0
1.14
–2.48 0
–2.48 0
—
—
—
R/W
4
1
n
1
0
0
0
0
0
0
Rev. 3.00 Sep 15, 2006 page 563 of 988
R/W
3
1
= 2.4576 MHz
N
174
127
255
127
63
31
15
7
3
1
1
R/W
Error
(%)
–0.26 1
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
—
0.00
2
1
n
1
1
0
0
0
0
0
0
0
—
REJ09B0330-0300
R/W
1
1
N
212
155
77
155
77
38
19
9
4
2
—
= 3 MHz
R/W
0
1
Error
(%)
0.03
0.16
0.16
0.16
0.16
0.16
–2.34
–2.34
–2.34
0.00
—