R26 datasheet(81/487 Pages) RENESAS

81 / 487 page

R8C/26 Group, R8C/27 Group

7. Programmable I/O Ports

Rev.2.10

Sep 26, 2008

Page 62 of 453

REJ09B0278-0210

Figure 7.10

Registers PINSR1, PINSR2, and PINSR3

Pin Select Register 1

Symbol

Address

After Reset

PINSR1

00F5h

00h

Bit Symbol

Bit Name

Function

NOTE:

b1 b0

0 0 : P3_7(TXD1/RXD1)

0 1 : P3_7(TXD1), P4_5(RXD1)

1 0 : P3_6(TXD1/RXD1)

1 1 : Do not set.

TXD1/RXD1 pin select bit(1)

b3 b2

b7 b6 b5 b4

UART1SEL1

UART1SEL0

0000

The UART1 pins can be selected by using bits U1PINSEL, TXD1SEL and TXD1EN in the PMR register. Refer to Figure

7.11 PMR Register.

—

(b2)

—

(b7-b3)

Set to 1. When read, the content is 0.

Set to 0. When read, the content is 0.

Reserved bits

Reserved bit

Pin Select Register 2

Symbol

Address

After Reset

PINSR2

00F6h

00h

Bit Symbol

Bit Name

Function

—

(b7)

—

(b5-b0)

b3 b2

b7 b6 b5 b4

TRBOSEL

00 0

0 : P3_1

1 : P1_3

TRBO pin select bit

Set to 0. When read, the content is 0.

Reserved bits

Reserved bit

Pin Select Register 3

Symbol

Address

After Reset

PINSR3

00F7h

00h

Bit Symbol

Bit Name

Function

0 : P5_3

1 : P3_4

b3 b2

b7 b6 b5 b4

TRCIOCSEL

—

(b2-b0)

Reserved bits

Set to 1. When read, the content is 0.

TRCIOC pin select bit

—

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

TRCIODSEL

TRCIOD pin select bit

0 : P5_4

1 : P3_5

—

(b5)

—

(b7-b6)

Set to 1. When read, the content is 0.

Reserved bit

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