r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 451

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 20.11
20.3.2.4
The U2LCH bit in the U2C1 register is used to select whether the logic of serial data is inverted.
If the U2LCH bit is set to 1 (inverted), the data written to the U2TB register has its logic inverted before being
transmitted. Similarly, the received data has its logic inverted when read from the U2RB register. Figure 23.11
shows the Serial Data Logic Switching.
(1) U2LCH Bit in U2C1 Register = 0 (not inverted)
(2) U2LCH Bit in U2C1 Register = 1 (inverted)
The above applies under the following conditions:
• CKPOL bit in U2C0 register = 0 (transmit data is output at the falling
• UFORM bit in U2C0 register = 0 (LSB first)
• STPS bit in U2MR register = 0 (one stop bit)
• PRYE bit in U2MR register = 1 (parity enabled)
Transfer clock
Transfer clock
edge and receive data is input at the rising edge of the transfer clock)
(not inverted)
Preliminary document
Specifications in this document are tentative and subject to change.
Serial Data Logic Switching Function
Serial Data Logic Switching
(inverted)
TXD2
TXD2
ST
ST
D0
D0
D1
D1
D2
D2
D3
D3
D4
D4
D5
D5
D6
D6
D7
D7
ST: Start bit
P: Parity bit
SP: Stop bit
20. Serial Interface (UART2)
P
P
SP
SP
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