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R8C/15 Datasheet(PDF) 150 Page - Renesas Technology Corp

Part # R8C/15
Description  16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / R8C/Tiny SERIES
PDF  277 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C/15 Datasheet(HTML) 150 Page - Renesas Technology Corp

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R8C/14 Group, R8C/15 Group
14. Serial Interface
Rev.2.10
Jan 19, 2006
Page 138 of 253
REJ09B0164-0210
Figure 14.10
Receive Timing in UART Mode
14.2.1
CNTR0 Pin Select Function
The CNTRSEL bit in the UCON register selects whether P1_7 can be used as the CNTR00/INT10
input pin or P1_5 can be used as the CNTR01/INT11 input pin.
When the CNTRSEL bit is set to “0”, P1_7 is used as the CNTR00/INT10 pin and when the
CNTRSEL bit is set to “1”, P1_5 is used as the CNTR01/INT11 pin.
U0BRG output
Set to "0" when interrupt request is accepted, or set by a program
• Example of receive timing when transfer data is 8 bits long (parity disabled, one stop bit)
The above timing diagram applies to the following conditions.
• PRYE bit in U0MR register = 0 (parity disabled)
• STPS bit in U0MR register = 0 (1 stop bit)
U0C1 register
RE bit
Start bit
Stop bit
D0
D1
D7
RXD0
Transfer clock
Sampled "L"
Receive data taken in
Reception triggered when transfer clock
is generated by falling edge of start bit
Transferred from UART0 receive
register to U0RB register
U0C1 register
RI bit
S0RIC register
RI bit
"1"
"0"
"1"
"0"
"1"
"0"



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