Datasheet > MC33884DW

MC33884DW

更新时间： 2024-11-23 11:09:11

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		显示器接口集成电路光电二极管监视器
页数	文件大小	规格书
21页	238K
描述
SWITCH MONITOR INTERFACE

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MC33884DW 数据手册

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by MC33884/D

SEMICONDUCTOR TECHNICAL DATA

The MC33884 Switch Monitor Interface is a monolithic silicon

integrated circuit (IC) that performs switch monitoring functions.

The device provides efficient interface between electrical switches

and low voltage microprocessors. The MC33884 supplies switch

contact pull–up and pull–down current while monitoring the input

voltage level. All inputs are protected for transients when

implemented with an appropriate static discharge capacitor used

on the inputs.

SCALE 1:1

There are four modes of operation – Sleep, Normal, Polling, and

Polling + INT Timer. Sleep mode reduces the current drain to a

quiescent current level of 10 A and disables the IC. Normal mode

interrupts the microprocessor whenever any external switch

changes it’s OPEN or CLOSED state. Polling mode reads a switch

status periodically and interrupts the microprocessor only when an

external switch is sensed as being CLOSED. The Polling + INT

Timer mode is similar to the Polling mode, with the addition of an

interrupt being sent to the microprocessor if a switch is sensed

CLOSED or upon the internal interrupt timer ”timing out”. An

interrupt is always ultimately sent to the microprocessor in this

mode. All modes of operation are easily programmed via the Serial

Peripheral Interface (SPI) control.

DW Suffix

24 Lead SOIC

CASE 751E

PIN CONNECTIONS

VDD

SCLK

CSB

VBG

SP4

SG6

SG5

SG4

SB2

SP3

SP1

SG1

SG2

SG3

SB1

The MC33884 has the following features:

SP2

• Full Operation with 7.0 V ≤ V

Limited Operation with 5.5 V ≤ V

• Input Voltage Range: –14 V to 40 V

≤ 26 V,

≤ 7.0 V

PWR

MASL

VPWR

GND

INTB

SYNC

RSTB

PWR

• Interfaces Directly to Microprocessors Using SPI Protocol

• 24–Lead Wide Body SOIC Package

• Wake–up on Change of Monitored Switch Status

• Programmable Wetting Current

• 4 Programmable Inputs to Monitor 4 Switch–to–Battery or

4 Switch–to–Ground Switches

ORDERING INFORMATION

Operating

Temperature

• 6 (fixed function) Inputs to Monitor 6 Switch–to–Ground Switches

• 2 (fixed function) Inputs to Monitor 2 Switch–to–Battery Switches

• Standby Current During Normal Mode = 100 A

• Quiescent Current in Sleep Mode < 10 A

• Reset (RST) Input Defaults the Device to Sleep Mode

• Active Interrupt (INT) on Change of Switch State in Normal Mode

• 4 Modes of Operation

Device

Package

Range

= – 40 to

105°C

MC33884DW

SO–24

= – 40 to

105°C

MC33884DWR2

(Sleep, Normal, Polling, Polling + INT Timer)

• Designed to Operate –40°C ≤ T ≤ 105°C

This document contains information on a new product. Specifications and information herein are subject to change without notice.

REV 2

09/01

Motorola, Inc. 2001

12 3 4 5 6 7...21

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与MC33884DW相关器件

型号	品牌	获取价格	描述	数据表
MC33884DWR2	MOTOROLA	获取价格	SWITCH MONITOR INTERFACE
MC33884DWR2	FREESCALE	获取价格	Switch Monitor Interface
MC33886	MOTOROLA	获取价格	5.0 A H BRIDGE
MC33886DH	MOTOROLA	获取价格	5.0 A H BRIDGE
MC33886DH	FREESCALE	获取价格	5.0 A H-Bridge
MC33886DH	NXP	获取价格	STEPPER MOTOR CONTROLLER, PDSO20, 16 X 11 MM, 1.27 MM PITCH, PLASTIC, HSOP-20
MC33886DH/R2	MOTOROLA	获取价格	5.0 A H BRIDGE
MC33886DHR2	MOTOROLA	获取价格	5.0 A H BRIDGE
MC33886DHR2	FREESCALE	获取价格	5.0 A H-Bridge
MC33886DHR2	NXP	获取价格	STEPPER MOTOR CONTROLLER, PDSO20, 16 X 11 MM, 1.27 MM PITCH, PLASTIC, HSOP-20

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