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參數資料
| 型號： | MC33972 |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | Multiple Switch Detection Interface with Suppressed Wake-Up(帶抑制喚醒功能的多開關檢測接口) |
| 中文描述： | 多交換檢測接口，具有抑制喚醒（帶抑制喚醒功能的多開關檢測接口） |
| 文件頁數： | 1/28頁 |
| 文件大?。?/td> | 819K |
| 代理商： | MC33972 |
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
33972 Simplified Application Diagram
This document contains information on a new product.
Specifications and information herein are subject to change without notice.
Motorola, Inc. 2003
Document order number: MC33972/D
Rev 2.0, 08/2003
33972
Advance Information
Multiple Switch Detection Interface
with Suppressed Wake-Up
The 33972 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 analog input signal
is buffered and provided on the AMUX output pin for the MCU to read.
The 33972 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 33972 ideal for automotive and
industrial products requiring low sleep state currents.
Note
The 33972 is similar to the 33993 device, with the exception that the
programmable interrupt timer for the 33972’s Sleep mode can be disabled (refer
to the section entitled
Sleep Mode on page 18
).
Features
Designed to Operate 5.5 V
≤
V
PWR
≤
26 V
Switch Input Voltage Range -14 V to V
PWR
, 40 V Max
Interfaces Directly to Microprocessor Using 3.3 V/5.0 V SPI Protocol
Selectable Wake-Up on Change of State
Selectable Wetting Current (16 mA or 2.0 mA)
8 Programmable Inputs (Switches to Battery or Ground)
14 Switch-to-Ground Inputs
V
PWR
Standby Current 100
μ
A Typical, V
DD
Standby Current 20
μ
A Typical
Active Interrupt (
INT
) on Change-of-Switch State
V
DD
V
DD
V
PWR
Power Supply
LVI
Enable
Watchdog
Reset
V
DD
SI
SO
INT
SCLK
CS
AMUX
MOSI
SCLK
CS
MISO
INT
AN0
VBAT
SP0
SP1
SP7
SG1
SG0
SG12
SG13
WAKE
33972
MCU
GND
VBAT
VBAT
MULTIPLE SWITCH
DETECTION INTERFACE WITH
SUPPRESSED WAKE-UP
DWB SUFFIX
CASE 1324
32-LEAD SOICW
ORDERING INFORMATION
Device
Temperature
Range (T
A
)
-40
°
C
to 125
°
C
Package
MC33972DWB/R2
32 SOICW
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關代理商/技術參數 |
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| MC33972ATEK | 功能描述:接口 - 專用 MULT SW DET SUP-WKUP RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MC33972ATEKR2 | 功能描述:接口 - 專用 MULT SW DET SUP-WKUP RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MC33972ATEW | 功能描述:接口 - 專用 MULT SW DET SUP-WKUP RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MC33972ATEWR2 | 功能描述:接口 - 專用 MULT SW DET SUP-WKUP RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| MC33972DWB | 功能描述:IC SWITCH DETECT SPI 32-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 標準包裝:3,000 系列:- 應用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤 供應商設備封裝:24-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) 安裝類型:表面貼裝 產品目錄頁面:1015 (CN2011-ZH PDF) 其它名稱:296-25223-2 |
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