M16C65 Datasheet, PDF (573/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
23. Serial Interface UARTi (i = 0 to 2, 5 to 7)
P1_3
P1_2
P7_2(CLK2)
P7_1(RXD2)
P7_0(TXD2)
MCU (master)
P9_3
P7_2(CLK2)
P7_1(RXD2)
P7_0(TXD2)
MCU (slave)
P9_3
P7_2(CLK2)
P7_1(RXD2)
P7_0(TXD2)
MCU (slave)
Figure 23.22 Serial Bus Communication Control Example (UART2)
Table 23.21 I/O Pin Functions in Special Mode 2
Pin Name I/O
Function
Method of Selection
CLKi
Output Clock output
The CKDIR bit in the UiMR register = 0
Input Clock input
The CKDIR bit in the UiMR register = 1
Set the port direction bits sharing pins to 0.
TXDi
Output Serial data output
(Dummy data output when performing reception only.)
RXDi
Input Serial data input
Set the port direction bits sharing pins to 0.
Input Input port
Set the port direction bits sharing pins to 0. (can be used as
an input port when performing transmission only)
i = 0 to 2, 5 to 7
Pins CLKi and CTSi/RTSi are not used. (They can be used as I/O ports.)
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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