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| 型号： | MCZ33972EWR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH DETECTION MULT 32-SOIC |
| 标准包装： | 1,000 |
| 应用： | 开关监控 |
| 接口： | SPI |
| 电源电压： | 8 V ~ 26 V |
| 封装/外壳： | 32-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 32-SOIC |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
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Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
Document Number: MC33972
Rev. 19.0, 3/2012
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2009-2012. All rights reserved.
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.
Features
Designed to operate 5.5 V
≤ VPWR ≤ 26 V
Switch input voltage range -14 V to VPWR, 40 V Max
Interfaces directly to MPU using 3.3 V/5.0 V SPI protocol
Selectable wake-up on change of state
Selectable wetting current (16 or 2.0 mA)
8 programmable inputs (switches to battery or ground)
14 switch-to-ground inputs
Typical standby current - VPWR = 100 μA and VDD = 20 μA
Active interrupt (INT) on change-of-switch state
Figure 1. 33972 Simplified Application Diagram
MULTIPLE SWITCH
DETECTION INTERFACE
EW SUFFIX (Pb-FREE)
98ARH99137A
32-PIN SOICW
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33972TEW/R2
-40 °C to 125 °C
32 SOICW
MC33972ATEW/R2
MC33972ATEK/R2
32 SOICW EP
33972/A/T
EK SUFFIX (Pb-FREE)
98ASA10556D
32-PIN SOICW EP
VBAT
SP0
SP1
SP7
SG0
SG1
SG12
SG13
VPWR
VDD
WAKE
SI
CS
SO
INT
AMUX
GND
MOSI
SCLK
CS
MISO
INT
AN0
33972
MCU
SCLK
POWER SUPPLY
LVI
ENABLE
WATCHDOG
RESET
VDD
VBAT
VDD
VBAT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCZ33972TEW | 制造商:Freescale Semiconductor 功能描述:MULTI-SW DETECT W/SUPRES - Bulk |
| MCZ33972TEW/R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Multiple Switch Detection Interface with Suppressed Wake-up |
| MCZ33972TEWR2 | 制造商:Freescale Semiconductor 功能描述:MULTI-SW DETECT W/SUPRES - Tape and Reel |
| MCZ33975AEK | 功能描述:输入/输出控制器接口集成电路 ENHANCED MULTI SW DETECT RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MCZ33975AEKR2 | 功能描述:接口 - 专用 ENHANCED MULTI SW DETECT RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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