H8SSLASH2224 datasheet(436/1071 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]

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Section 10 I/O Ports

Rev. 5.00 Aug 08, 2006 page 350 of 982

REJ09B0054-0500

10.11 Port F

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

• Port F data direction register (PFDDR)

• Port F data register (PFDR)

• Port F register (PORTF)

10.11.1 Port F Data Direction Register (PFDDR)

PFDDR specifies input or output of the port F pins using the individual bits. PFDDR 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

PF7DDR

0/1*

PF6DDR

PF5DDR

PF4DDR

PF3DDR

PF2DDR

PF1DDR

PF0DDR

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

setting this bit to 1 makes the corresponding port F

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

an input port.

Note:

* In modes 4 to 6, initial value is 1. In mode 7, initial value is 0.

H8S/2224 Scheda tecnica(PDF) 436 Page - Renesas Technology Corp