H8SSLASH2224 datasheet(408/1071 Pages) RENESAS

Il numero della parte	H8S/2224

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

PDF	1071 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

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Section 10 I/O Ports

Rev. 5.00 Aug 08, 2006 page 322 of 982

REJ09B0054-0500

10.4

Port 7

Port 7 is an 8-bit I/O port and has the following registers.

• Port 7 data direction register (P7DDR)

• Port 7 data register (P7DR)

• Port 7 register (PORT7)

10.4.1

Port 7 Data Direction Register (P7DDR)

P7DDR specifies input or output of the port 7 pins using the individual bits. P7DDR 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

P77DDR

P76DDR

P75DDR

P74DDR

P73DDR

P72DDR

P71DDR

P70DDR

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

setting this bit to 1 makes the corresponding port 7

pin an output pin. Clearing this bit to 0 makes the pin

an input pin.

H8S/2224 Scheda tecnica(PDF) 408 Page - Renesas Technology Corp