R28 datasheet(77/473 Pages) RENESAS

77 / 473 page

R8C/28 Group, R8C/29 Group

7. Programmable I/O Ports

Rev.2.10

Sep 26, 2008

Page 58 of 441

REJ09B0279-0210

Figure 7.8

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 : Do not set.

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 TXD1SEL and TXD1EN in the PMR register. Refer to Figure 7.9 PMR

—

(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

NOTE:

1. Set the TRBOSEL bit to 1 (enabled) before using timer RB.

—

(b7)

—

(b5-b0)

b3 b2

b7 b6 b5 b4

TRBOSEL

00 0

0 : Disabled

1 : Enabled

TRBO pin select bit(1)

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

NOTE:

Set these bits to 1 (enabled) before using timer RC.

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

—

(b5)

—

(b7-b6)

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

Reserved bit

—

TRCIODSEL

—

(b2-b0)

TRCIOCSEL

Reserved bits

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

TRCIOD pin select bit(1)

TRCIOC pin select bit(1)

b7 b6 b5 b4

0 : Disabled

1 : Enabled

b3 b2

0 : Disabled

1 : Enabled

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