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R8C 데이터시트(PDF) 112 Page - Renesas Technology Corp

부품명 R8C
상세설명  RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  199 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C 데이터시트(HTML) 112 Page - Renesas Technology Corp

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R8C/10 Group
13.2 Clock Asynchronous Serial I/O (UART) Mode
Rev.1.20 Jan 27, 2006
page 102 of 180
REJ09B0019-0120
• Example of receive timing when transfer data is 8 bits long (parity disabled, one stop bit)
Figure 13.10 Receive Operation
UiBRG output
RxDi
Transfer clock
“1”
“0”
“0”
“1”
“0”
“1”
UiC1 register
RE bit
UiC1 register
RI bit
SiRIC register
IR bit
Start bit
Sampled “L”
Stop bit
(GA 13 UM60)
Set to “0” when interrupt request is accepted, or set by a program
The above timing diagram applies to the case where the register bits are set as follows:
• UiMR register PRYE bit = 0 (parity disabled)
• UiMR register STPS bit = 0 (1 stop bit)
i = 0, 1
D0
D1
D7
Receive data taken in
Reception triggered when transfer clock
is generated by falling edge of start bit
Transferred from UARTi receive
register to UiRB register
13.2.1 TxD10/RxD1 Select Function (UART1)
P37 can be used as TxD10 output pin or RxD1 input pin by selecting with the TXD1EN bit in the UCON
register. P37 is used as TxD10 output pin if the TXD1EN bit is set to “1” (TxD10) and used as RxD1
input pin if set to “0” (RxD1).
13.2.2 TxD11 Select Function (UART1)
P00 can be used as TxD11 output pin or a port by selecting with the TXD1SEL bit in the UCON register.
P00 is used as TxD11 output pin if the TXD1SEL bit is set to “1” (TxD11) and used as an I/O port if set
to “0” (P00).



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