SH7014 datasheet(512/754 Pages) RENESAS

512 / 754 page

17. I/O Ports (I/O)

Rev.5.00 Sep. 27, 2007 Page 478 of 716

REJ09B0398-0500

17.3

Port B

Port B is a 10-pin input/output port (8-pin in the SH7014) as shown in table 17.4.

Table 17.4

Port B

ROM Disabled Extended

Mode (Modes 0, 1)

ROM Enabled Extended

Mode (Mode 2)*

Single Chip Mode*

PB9 (I/O)/

IRQ7 (input)/

A21 (output)

PB9 (I/O)/

IRQ7 (input)/

A21 (output)

PB9 (I/O)/

IRQ7 (input)

PB8 (I/O)/

IRQ6 (input)/

A20 (output)/

WAIT (input)

PB8 (I/O)/

IRQ6 (input)/

A20 (output)/

WAIT (input)

PB8 (I/O)/

IRQ6 (input)

PB7 (I/O)/A19 (output)

PB7 (I/O)

PB6 (I/O)/A18 (output)

PB6 (I/O)

PB5 (I/O)/

IRQ3

(input)/RDWR (output)

PB5 (I/O)/

IRQ3 (input)/

RDWR (output)

PB5 (I/O)/

IRQ3 (input)

PB4 (I/O)/

IRQ2 (input)/

CASH (output)

PB4 (I/O)/

IRQ2 (input)/

CASH (output)

PB4 (I/O)/

IRQ2 (input)

PB3 (I/O)/

IRQ1 (input)/

CASL (output)

PB3 (I/O)/

IRQ1 (input)/

CASL (output)

PB3 (I/O)/

IRQ1 (input)

PB2 (I/O)/

IRQ0 (input)/

RAS (output)

PB2 (I/O)/

IRQ0 (input)/

RAS (output)

PB2 (I/O)/

IRQ0 (input)

A17 (output)

PB1 (I/O)/A17 (output)

PB1 (I/O)

A16 (output)

PB0 (I/O)/A16 (output)

PB0 (I/O)

Note:

SH7016 and SH7017 only.

17.3.1

Table 17.5 summarizes the port B register.

Table 17.5

Port B Register

Name

Abbreviation

R/W

Initial Value

Address

Access Size

Port B data register

PBDR

R/W

H'0000

H'FFFF8390

H'FFFF8391

8, 16, 32

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