PC33975AR2 datasheet(1/32 Pages) FREESCALE

Numer części	PC33975AR2

Szczegółowy opis	Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current

PDF	32 Pages

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Producent	FREESCALE [Freescale Semiconductor, Inc]

Strona internetowa	http://www.freescale.com

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Document order number: MC33975

Rev 4.0, 08/2005

Freescale Semiconductor

Technical Data

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

Multiple Switch Detection

Interface with Suppressed

Wake-Up and 32mA Wetting

Current

Freescale offers multiple Switch Detection Interface Devices. The

33975 Multiple Switch Detection Interface with Suppressed Wake-Up

is designed to detect the closing and opening of up to 22 switch

contacts. The switch status, either open or closed, is transferred to the

microprocessor unit (MCU) through a serial peripheral interface (SPI).

The device also features a 22-to-1 analog multiplexer for reading

inputs as analog.

The 33975 device has two modes of operation, Normal and Sleep.

Normal mode allows programming of the device and supplies switch

contacts with pull-up or pull-down current as it monitors switch change

of state. The Sleep mode provides low quiescent current, which makes

the 33975 ideal for automotive and industrial products requiring low

sleep state currents.

Improvements are a programmable interrupt timer for Sleep mode

that can be disabled, switch detection currents of 32 mA and 4.0 mA

for switch-to-ground inputs, and an interrupt bit that can be reset.

Features

• Designed to Operate 5.5 V ≤ VPWR ≤ 28 V

• Switch Input Voltage Range -14 V to VPWR

• Interfaces Directly to Microprocessor Using 3.3 V/5.0 V SPI

Protocol

• Selectable Wake-Up on Change of State

• Selectable Wetting Current (32 mA or 4.0 mA for switch-to-ground

inputs)

• 8 Programmable Inputs (Switches to Battery or Ground)

• 14 Switch-to-Ground Inputs

•VPWR Standby Current 100 µA Typical, VDD Standby Current 20 µA Typical

• Pb-free 32-terminal suffix EK

Figure 1. 33975 Simplified Application Diagram

ORDERING INFORMATION

Device

Temperature

Range (TA)

Package

MC33975EK/R2

-40°C to 125°C

32 SOICW-EP

PC33975AEK/R2

EK Suffix (Pb-Free)

98ARL10543D

32-TERMINAL SOICW EP

33975

33975A

MULTIPLE SWITCH

DETECTION INTERFACE WITH

SUPPRESSED WAKE-UP

33975

VBAT

SP0

SP1

SP7

SG0

SG1

SG12

SG13

VPWR

VDD

AMUX

WAKE

GND

INT

SO

SI

SCLK

CS

MCU

AN0

INT

MISO

MOSI

SCLK

CS

Power Supply

LVI

Watchdog

Reset

Enable

VBAT

VDD

Podobny numer części - PC33975AR2

Producent	Numer części	Arkusz danych	Szczegółowy opis
Renesas Technology Corp	PC339	236Kb / 13P	LOW POWER QUAD COMPARATOR
Freescale Semiconductor...	PC33926PNB	665Kb / 24P	5.0 A Throttle Control H-Bridge
	PC33926PNB/R2	778Kb / 25P	5.0 A Throttle Control H-Bridge
	PC33926PNBR2	665Kb / 24P	5.0 A Throttle Control H-Bridge
Motorola, Inc	PC33981PNA/R2	469Kb / 24P	High-Frequency, High-Current, Self-Protected High-Side Switch (4.0 m??up to 60 kHz)

More results

Podobny opis - PC33975AR2

Producent	Numer części	Arkusz danych	Szczegółowy opis
Motorola, Inc	MC33972	506Kb / 28P	Multiple Switch Detection Interface with Suppressed Wake-Up
Freescale Semiconductor...	MC33972	1Mb / 28P	Multiple Switch Detection Interface with Suppressed Wake-Up
	MC33972	1Mb / 32P	Multiple Switch Detection Interface with Suppressed Wake-Up
	33975	1Mb / 34P	Multiple Switch Detection Interface with Suppressed Wake-up and 32mA Wetting Current
	33972	1Mb / 32P	Multiple Switch Detection Interface with Suppressed Wake-up
	MC33975ATEK	883Kb / 32P	Multiple Switch Detection Interface with Suppressed Wake-up and 32 mA Wetting Current
NXP Semiconductors	CD1030	1Mb / 67P	33 channel multiple switch detection interface with programmable wetting current Rev. 5.0, 7/2018
	MC34972	1Mb / 31P	Multiple Switch Detection Interface with Suppressed Wake-up Rev. 1.0, 9/2013
	MC33972	1Mb / 32P	Multiple Switch Detection Interface with Suppressed Wake-up Rev. 20, 8/2023
	MC33975	1Mb / 32P	Multiple Switch Detection Interface with Suppressed Wake-up and 32 mA Wetting Current Rev 12.0, 08/2023

More results

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