H8SSLASH2214 datasheet(374/936 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 314 of 872

REJ09B0189-0400

9.6

Port 9

9.6.1

Overview

Port 9 is a 1-bit input-only port. Port 9 pins also function as D/A converter analog output pin

(DA0). Port 9 pin functions are the same in all operating modes. Figure 9.5 shows the port 9 pin

configuration.

P96 (input)/DA0 (output)

Port 9 pins

Port 9

Figure 9.5 Port 9 Pin Functions

9.6.2

Table 9.9 shows the port 9 register configuration. Port 9 is an input-only register, and does not

have a data direction register or data register.

Table 9.9

Port 9 Registers

Name

Abbreviation

R/W

Initial Value

Address*

Port 9 register

PORT9

Undefined

H'FFB8

Note: * Lower 16 bits of the address.

(1) Port 9 Register (PORT9)

—

P96

—*

—

Bit

Initial value :

R/W

Note: * Determined by the state of pin P96.

PORT9 is an 8-bit read-only register. The pin states are always read when a port 9 read is

performed. This register cannot be written to. Bits 7 and 5 to 0 are reserved, and will return an

undefined value if read.

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