H8SSLASH2214 datasheet(364/936 Pages) RENESAS

Il numero della parte	H8S/2214

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

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 304 of 872

REJ09B0189-0400

9.4

Port 4

9.4.1

Overview

Port 4 is an 8-bit input-only port. Port 4 pins also function as external expansion interrupt input

pins (

EXIRQ6 to EXIRQ0). Port 4 pin functions are the same in all operating modes. Figure 9.3

shows the port 4 pin configuration.

P47

P46

P45

P44

P43

P42

P41

P40

(input)

EXIRQ6 (input)

EXIRQ5 (input)

EXIRQ4 (input)

EXIRQ3 (input)

EXIRQ2 (input)

EXIRQ1 (input)

EXIRQ0 (input)

Port 4 pins

Port 4

Figure 9.3 Port 4 Pin Functions

9.4.2

Table 9.6 shows the port 4 register configuration. Port 4 is an input-only register, and does not

have a data direction register or data register.

Table 9.6

Port 4 Registers

Name

Abbreviation

R/W

Initial Value

Address*

Port 4 register

PORT4

Undefined

H'FFB3

Interrupt request input pin select register 0 IPINSEL0

R/W

H'00

H'FE4A

Note: * Lower 16 bits of the address.

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