HD6432142 datasheet(72/1177 Pages) RENESAS

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Section 1 Overview

Rev. 4.00 Sep 27, 2006 page 28 of 1130

REJ09B0327-0400

Pin No.

Type

Symbol

FP-100B

TFP-100B

I/O

Name and Function

Bus control

WAIT

Input

Wait: Requests insertion of a wait state in the bus

cycle when accessing external 3-state address

space.

Output Read: When this pin is low, it indicates that the

external address space is being read.

HWR

Output High write: When this pin is low, it indicates that

the external address space is being written to. The

upper half of the data bus is valid.

LWR

Output Low write: When this pin is low, it indicates that the

external address space is being written to. The

lower half of the data bus is valid.

AS/IOS

Output Address strobe: When this pin is low, it indicates

that address output on the address bus is valid.

Interrupt

signals

NMI

Input

Nonmaskable interrupt: Requests a nonmaskable

interrupt.

IRQ0 to

IRQ7

23 to 25,

97 to 99,

34, 35

Input

Interrupt request 0 to 7: These pins request a

maskable interrupt.

FTCI

Input

FRT counter clock input: Input pin for an external

clock signal for the free-running counter (FRC).

16-bit free-

running

timer (FRT)

FTOA

Output FRT output compare A output: The output

compare A output pin.

FTOB

Output FRT output compare B output: The output

compare B output pin.

FTIA

Input

FRT input capture A input: The input capture A

input pin.

FTIB

Input

FRT input capture B input: The input capture B

input pin.

FTIC

Input

FRT input capture C input: The input capture C

input pin.

FTID

Input

FRT input capture D input: The input capture D

input pin.

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