R28 datasheet(78/473 Pages) RENESAS

Part #	R28

Description	RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/2x SERIES

PDF	473 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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78 / 473 page

R8C/28 Group, R8C/29 Group

7. Programmable I/O Ports

Rev.2.10

Sep 26, 2008

Page 59 of 441

REJ09B0279-0210

Figure 7.9

PMR Register

Port Mode Register

Symbol

Address

After Reset

PMR

00F8h

00h

Bit Symbol

Bit Name

Function

NOTE:

1. The UART1 pins can be selected by using bits TXD1SEL and TXD1EN, and bits UART1SEL1 and UART1SEL0 in the

PINSR1 register.

IICSEL

SSU / I2C bus pin sw itch bit

0 : Selects SSU function

1 : Selects I2C bus function

TXD1EN

TXD1/RXD1 select bit(1)

0 : RXD1

1 : TXD1

TXD1SEL

Port/TXD1 pin sw itch bit(1)

0 : Programmable I/O port

1 : TXD1

U1PINSEL

TXD1 pin sw itch bit(1)

Set to 1 to use UART1.

SSISEL

SSI pin select bit

0 : P3_3

1 : P1_6

—

(b0)

Set to 0.

—

(b2-b1)

—

Reserved bit

Nothing is assigned. If necessary, set to 0.

When read, the content is 0.

b3 b2 b1

b7 b6 b5 b4

PINSR1 Register

UART1SEL1,

UART1SEL0 bit

TXD1SEL bit

TXD1EN bit

P3_7(TXD1)

P3_7(RXD1)

P3_7(TXD1)

P4_5(RXD1)

×: 0 or 1

Pin Function

00b

01b

PMR Register

R28 Datasheet(PDF) 78 Page - Renesas Technology Corp

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