H8SSLASH2214 datasheet(408/936 Pages) RENESAS

部件名	H8S/2214

功能描述	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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408 / 936 page

Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 348 of 872

REJ09B0189-0400

9.12

Port F

9.12.1

Overview

Port F is an 8-bit I/O port. Port F pins also function as external interrupt input pins (

IRQ2 and

IRQ3), bus control signal I/O pins (AS, RD, HWR, LWR, WAIT, BREQ, and BACK), and the

system clock (

φ) output pin.

The interrupt input pins (

IRQ2 and IRQ3) are Schmitt-triggered inputs.

Figure 9.18 shows the port F pin configuration.

PF7/

PF6/

PF5/

PF4/

HWR

PF3/

LWR/IRQ3

PF2/

WAIT

PF1/

BACK

PF0/

BREQ/IRQ2

Port F pins

Port F

PF7 (input)/

φ (output)

PF6 (input/output)

PF5 (input/output)

PF4 (input/output)

PF3 (input/output)/

IRQ3 (input)

PF2 (input/output)

PF1 (input/output)

PF0 (input/output)/

IRQ2 (input)

Pin functions in mode 7

PF7 (input)/

φ (output)

AS (output)

RD (output)

HWR (output)

PF3 (input/output)/

LWR (output)/IRQ3 (input)

PF2 (input/output)/

WAIT (input)

PF1 (input/output)/

BACK (output)

PF0 (input/output)/

BREQ (input)/IRQ2 (input)

Pin functions in modes 4 to 6

Figure 9.18 Port F Pin Functions

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