![Renesas M16C/62P Group Скачать руководство пользователя страница 216](http://html1.mh-extra.com/html/renesas/m16c-62p-group/m16c-62p-group_hardware-manual_1440174216.webp)
M16C/62P Group (M16C/62P, M16C/62PT)
17. Serial Interface
Rev.2.41
Jan 10, 2006
Page 201 of 390
REJ09B0185-0241
Figure 17.20
Receive Operation
17.1.2.1
Bit Rate
In UART mode, the frequency set by the UiBRG register (i=0 to 2) divided by 16 become the bit rates. Table
17.9 lists Example of Bit Rates and Settings.
Table 17.9
Example of Bit Rates and Settings
Bit Rate
(bps)
Count Source
of UiBRG
Peripheral Function Clock : 16MHz
Peripheral Function Clock : 24MHz
Set Value of
UiBRG : n
Bit Rate (bps)
Set value of
UiBRG : n
Bit Rate (bps)
1200
f8
103 (67h)
1202
155 (9Bh)
1202
2400
f8
51 (33h)
2404
77 (4Dh)
2404
4800
f8
25 (19h)
4808
38 (26h)
4808
9600
f1
103 (67h)
9615
155 (9Bh)
9615
14400
f1
68 (44h)
14493
103 (67h)
14423
19200
f1
51 (33h)
19231
77 (4Dh)
19231
28800
f1
34 (22h)
28571
51 (33h)
28846
31250
f1
31 (1Fh)
31250
47 (2Fh)
31250
38400
f1
25 (19h)
38462
38 (26h)
38462
51200
f1
19 (13h)
50000
28 (1Ch)
51724
D0
Start bit
Sampled “L”
UiBRG count
source
RXDi
Transfer clock
RTSi
Stop bit
“1”
“0”
“0”
“1”
“H”
“L”
“0”
“1”
Reception triggered when transfer clock
is generated by falling edge of start bit
Set to “0” by an interrupt request acknowledgement or by program
Receive data taken in
D7
D1
Transferred from UARTi receive
register to UiRB register
The above timing diagram applies to the case where the register bits are set as follows:
· PRYE bit in UiMR register = 0 (parity disabled)
· STPS bit in UiMR register = 0 (1 stop bit)
· CRD bit in UiC0 register = 0 (CTSi/RTSi enabled) and CRS bit = 1 (RTSi selected)
i = 0 to 2
RE bit in UiC1
register
IR bit in SiRIC
register
RI bit in UiC1
register
• Example of Receive Timing when Transfer Data is 8 Bits Long (parity disabled, one stop bit)
http://www.xinpian.net
提供单片机解密、IC解密、芯片解密业务
010-62245566 13810019655