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参数资料
| 型号： | MC33972 |
| 厂商： | 飞思卡尔半导体(中国)有限公司 |
| 英文描述： | Multiple Switch Detection Interface with Suppressed Wake-Up(带抑制唤醒功能的多开关检测接口) |
| 中文描述： | 多交换检测接口，具有抑制唤醒（带抑制唤醒功能的多开关检测接口） |
| 文件页数： | 10/28页 |
| 文件大小： | 819K |
| 代理商： | MC33972 |
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33972/D
10
Go to: www.freescale.com
WAKE
The
WAKE
pin is an open-drain output and a wake-up input.
The pin is designed to control a power supply Enable pin. In the
Normal mode, the
WAKE
pin is low. In the Sleep mode, the
WAKE
pin is high. The
WAKE
pin has a pull-up to the internal
+5.0 V supply.
In Sleep mode with the
WAKE
pin high, falling edge of
WAKE
will place the 33972 in Normal mode. In Sleep mode with V
DD
applied, the INT pin must be high for negative edge of
WAKE
to
wake up the device. If V
DD
is not applied to the device in Sleep
mode,
INT
does not affect
WAKE
operation.
V
PWR
The V
PWR
pin is battery input and Power-ON Reset to the
33972 IC. The V
PWR
pin requires external reverse battery and
transient protection. Maximum input voltage on V
PWR
is 50 V.
All wetting, sustain, and internal logic current is provided from
the V
PWR
pin.
V
DD
The V
DD
input pin is used to determine logic levels on the
microprocessor interface (SPI) pins. Current from V
DD
is used
to drive SO output and the pull-up current for
CS
and
INT
pins.
V
DD
must be applied for wake-up from negative edge of
CS
or
INT
.
GND
The GND pin provides ground for the IC as well as ground for
inputs programmed as switch-to-battery inputs.
SP0–SP7
The 33972 device has 8 switch inputs capable of being
programmed to read switch-to-ground or switch-to-battery
contacts. The input is compared with a 4.0 V reference. When
programmed to be switch-to-battery, voltages greater than
4.0 V are considered closed. Voltages less than 4.0 V are
considered open. The opposite holds true when inputs are
programmed as switch-to-ground. Programming features are
defined in
Table 1
through
Table 6
in the
Device Operation
section of this datasheet beginning on page 12. Voltages
greater than the V
PWR
supply voltage will source current
through the SP inputs to the V
PWR
pin. Transient battery
voltages greater than 40 V must be clamped by an external
device.
SG0–SG13
The SGn pins are switch-to-ground inputs only. The input is
compared with a 4.0 V reference. Voltages greater than 4.0 V
are considered open. Voltages less than 4.0 V are considered
closed. Programming features are defined in
Table 1
through
Table 6
in the
Device Operation
section of this datasheet
beginning on page 12. Voltages greater than the V
PWR
supply
voltage will source current through the SG inputs to the V
PWR
pin. Transient battery voltages greater than 40 V must be
clamped by an external device.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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相关代理商/技术参数 |
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|---|---|
| MC33972ATEK | 功能描述:接口 - 专用 MULT SW DET SUP-WKUP 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 |
| MC33972ATEKR2 | 功能描述:接口 - 专用 MULT SW DET SUP-WKUP 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 |
| MC33972ATEW | 功能描述:接口 - 专用 MULT SW DET SUP-WKUP 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 |
| MC33972ATEWR2 | 功能描述:接口 - 专用 MULT SW DET SUP-WKUP 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 |
| MC33972DWB | 功能描述:IC SWITCH DETECT SPI 32-SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 专用 系列:- 标准包装:3,000 系列:- 应用:PDA，便携式音频/视频，智能电话 接口:I²C，2 线串口 电源电压:1.65 V ~ 3.6 V 封装/外壳:24-WQFN 裸露焊盘 供应商设备封装:24-QFN 裸露焊盘（4x4） 包装:带卷 (TR) 安装类型:表面贴装 产品目录页面:1015 (CN2011-ZH PDF) 其它名称:296-25223-2 |
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