SX8801IRXXMLTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SX8801IRXXMLTRT

Sensing Machine Data Acquisition with 16+10 bit ZoomingADC™

Semtech Corporation 

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XE8801A – SX8801R

11.1 Features

• Input port, 8 bits wide

• Each bit can be set individually for debounced or direct input

• Each bit can be set individually for pull-up or not

• Each bit is an interrupt request source on the rising or falling edge

• A system reset can be generated on an input pattern

• PA[0] and PA[1] can generate two events for the CPU, individually maskable

• PA[0] to PA[3] can be used as clock inputs for the counters/timers/PWM (product dependent)

• PA[0] can be used to enable the RC oscillator

11.2 Overview

Port A is a general purpose 8 bit wide digital input port, with interrupt capability. Figure 11-1 shows its structure.

VBat

Port A

8

8

8

8x

debounce

0

8

1

8

10

18

DebFast

0

(RegSysMisc(2)) 8x

8

8

1

11

PAReset[x]

10

01

0

00

8x

RegPAPullup

RegPADebounce

RegPACtrl

RegPAIn

RegPAEdge

RC

interrupts

events

cntclocks

256 Hz

8 kHz

RegPARes1

RegPARes0

resetfromporta

Figure 11-1:structure of Port A

© Semtech 2005

11-2

www.semtech.com

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