R5F2L3ACBNFP datasheet(130/848 Pages) RENESAS

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7. I/O Ports

REJ09B0441-0010 Rev.0.10

Jul 30, 2008

Page 94 of 809

Under development Preliminary specification

Specifications in this manual are tentative and subject to change.

R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,

R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group

7.4.11

UART1 Pin Select Register (U1SR)

The U1SR register selects which pin is assigned as the UART1 input/output. To use the I/O pins for UART1,

set this register.

Set the U1SR register before setting the UART1 associated registers. Also, do not change the setting value of

this register during UART1 operation.

Address 0189h

Bit

b4b3b2b1b0

Symbol

—

CLK1SEL0

—

RXD1SEL0

—

TXD1SEL0

After Reset

0000

Bit

Symbol

Bit Name

Function

R/W

TXD1SEL0 TXD1 pin select bit

0: TXD1 pin not used

1: TXD1 pin used

R/W

—

Nothing is assigned. If necessary, set to 0. When read, the content is 0.

—

RXD1SEL0 RXD1 pin select bit

0: RXD1 pin not used

1: RXD1 pin used

R/W

—

Nothing is assigned. If necessary, set to 0. When read, the content is 0.

—

CLK1SEL0 CLK1 pin select bit

0: CLK1 pin not used

1: CLK1 pin used

R/W

—

Nothing is assigned. If necessary, set to 0. When read, the content is 0.

—

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