H8SSLASH2224 datasheet(395/1071 Pages) RENESAS

Il numero della parte	H8S/2224

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	1071 Pages

Scroll/Zoom	100%

Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

Logo

395 / 1071 page

Section 10 I/O Ports

Rev. 5.00 Aug 08, 2006 page 309 of 982

REJ09B0054-0500

10.1

Port 1

Port 1 is an 8-bit I/O port and has the following registers.

• Port 1 data direction register (P1DDR)

• Port 1 data register (P1DR)

• Port 1 register (PORT1)

10.1.1

Port 1 Data Direction Register (P1DDR)

P1DDR specifies input or output of the port 1 pins using the individual bits. P1DDR cannot be

read; if it is, an undefined value will be read. This register is a write-only register, and cannot be

written by bit manipulation instruction. For details, see section 2.9.4, Access Methods for

Registers with Write-Only Bits.

Bit

Bit Name

Initial Value

R/W

Description

P17DDR

P16DDR

P15DDR

P14DDR

P13DDR

P12DDR

P11DDR

P10DDR

When a pin is specified as a general purpose I/O

port, setting this bit to 1 makes the corresponding

port 1 pin an output pin. Clearing this bit to 0

makes the pin an input pin.

H8S/2224 Scheda tecnica(PDF) 395 Page - Renesas Technology Corp