HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 372

MCU 5V 32K PB-FREE 100-TQFP

HD6477021X20V

Manufacturer Part Number
HD6477021X20V
Description
MCU 5V 32K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7020r
Datasheet

Specifications of HD6477021X20V

Core Processor
SH-1
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD6477021X20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
13.2.8
The bit rate register (BRR) is an eight-bit register that, together with the baud rate generator clock
source selected by the CKS1 and CKS0 bits in the serial mode register (SMR), determines the
serial transmit/receive bit rate.
The CPU can always read and write the BRR. The BRR is initialized to H'FF by a reset or in
standby mode. SCI1 and SCI2 have independent baud rate generator control, so different values
can be set in the two channels.
Table 13.3 shows examples of BRR settings in the asynchronous mode; table 13.4 shows
examples of BBR settings in the clocked synchronous mode.
Table 13.3 Bit Rates and BRR Settings in Asynchronous Mode
Bit Rate
(bits/s)
110
150
300
600
1200
2400
4800
9600
19200
31250
38400
Initial value:
Bit name:
Bit Rate Register (BRR)
R/W:
n
1
1
0
0
0
0
0
0
Bit:
R/W
7
1
N
141
103
207
103
51
25
12
1
R/W
6
1
2
Error (%)
0.03
0.16
0.16
0.16
0.16
0.16
0.16
0.00
R/W
5
1
R/W
4
1
(MHz)
n
1
1
0
0
0
0
0
0
R/W
3
1
N
148
108
217
108
54
26
13
6
R/W
2
1
2.097152
R/W
Error (%)
–0.04
0.21
0.21
0.21
–0.70
1.14
–2.48
–2.48
RENESAS 355
1
1
R/W
0
1

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