HD6473937RXV Renesas Electronics America, HD6473937RXV Datasheet - Page 285

• Manufacturer Part Number: HD6473937RXV
• Description: MCU 3/5V 60K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300L SLPr

Specifications of HD6473937RXV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI
• Peripherals: POR, WDT
• Number Of I /o: 59
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: OTP
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

8. Bit rate register (BRR)
BRR is an 8-bit register that designates the transmit/receive bit rate in accordance with the baud
rate generator operating clock selected by bits CKS1 and CKS0 of the serial mode register (SMR).
BRR can be read or written by the CPU at any time.
BRR is initialized to H'FF upon reset, and in standby, module standby, or watch mode.
Table 10-6 shows examples of BRR settings in asynchronous mode. The values shown are for
active (high-speed) mode.
Table 10-6 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode) (1)
Bit Rate
(bit/s)
110
150
200
250
300
600
1200
2400
4800
9600
19200
31250
38400
Bit
Initial value
Read/Write
OSC
32.8 kHz
n
Cannot be used,
as error exceeds
3%
N
BRR7
R/W
Error
(%)
7
1
38.4 kHz
n
—
0
0
—
0
0
—
—
—
—
—
—
—
BRR6
R/W
6
1
N
—
3
2
—
1
0
—
—
—
—
—
—
—
Error
(%)
—
0
0
—
0
0
—
—
—
—
—
—
—
BRR5
R/W
5
1
2 MHz
n
—
2
0
0
0
0
0
0
—
—
—
0
—
BRR4
R/W
N
—
12
155
124
103
51
25
12
—
—
—
0
—
4
1
Error
(%)
—
0.16
0.16
0
0.16
0.16
0.16
0.16
—
—
—
0
—
BRR3
R/W
3
1
2.4576 MHz
n
2
3
3
0
3
3
2
2
0
0
0
—
0
BRR2
N
21
3
2
153
1
0
1
0
7
3
1
—
0
R/W
2
1
Error
(%)
–0.83 —
0
0
–0.26 0
0
0
0
0
0
0
0
—
0
BRR1
R/W
4 MHz
n
2
—
2
0
0
0
0
—
—
0
—
1
1
N
—
25
—
249
12
103
51
25
12
—
—
1
—
BRR0
R/W
0
1
Error
(%)
—
0.16
—
0
0.16
0.16
0.16
0.16
0.16
—
—
0
—
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