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參數(shù)資料
| 型號(hào)： | KIT33972AEWEVBE |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 4/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT EVALUATION FOR MC33972 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 接口，開關(guān)探測(cè) |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MC33972 |
| 主要屬性： | 8 可編程輸入（電池開關(guān)或接地開關(guān)） |
| 次要屬性： | 14 開關(guān)至接地輸入 |
| 已供物品： | 板，CD |
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Analog Integrated Circuit Device Data
12
Freescale Semiconductor
33972
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
Figure 7. Functional Internal Block Description
CONTROL AND PROTECTION CIRCUITRY:
The 33972 is designed to operate from 5.5 V to 38/40 V on
the VPWR terminal. Characteristics are provided for VPWR
from 8.0 to 26 V for the IC (parametric tests are done from 8.0
to 16.0v). Switch contact currents and the internal logic
supply are generated from the VPWR terminal. The VDD
supply terminal is used to set the SPI communication voltage
levels, current source for the SO driver, and pull-up current
on INT and CS.
The on-chip voltage regulator and bandgap supplies the
required voltages to the internal monitor circuitry. The
temperature monitor is active in the Normal mode.
INTERFACE AND CONTROL:
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 33972 device has two modes
of operation, Normal and Sleep.
SWITCH PROGRAMMABLE INPUTS:
Programmable switch detection inputs. These 8 inputs can
selectively detect switch closures to Ground or Battery. 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.
SWITCH–TO-GROUND INPUTS:
Switch detection interface inputs. These 14 inputs can
detect switch closures to ground 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. Note: Each of these inputs may be used to supply
current to sensors external to a module.
MC33972 - Functional Block Diagram
Switch Programmable
Inputs
SP0 - SP7
Control & Protection
Voltage Regulation
Bandgap
Interface & Control
Multiplex Control
Control & Protection
SW-GND Inputs
Interface & Control
Switch–to-Ground
Inputs
SG0 - SG13
Oscillator & Clock
Temp. Sense
Interrupt/Wake-up
SPI Interface
SW Prog Inputs
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KIT33975AEWEVBE | 功能描述:交換機(jī) IC 開發(fā)工具 MULTIPLE SWITCH DETECT I RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評(píng)估:MAX4984E 工作電源電壓:2.8 V to 5.5 V |
| KIT33982CEVBE | 功能描述:電源管理IC開發(fā)工具 2.0 M HIGH-SIDE SW RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| KIT33982PNAEVB | 功能描述:電源管理IC開發(fā)工具 SPSS HIGH-SIDE SWTCH RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| KIT33984CEVBE | 功能描述:電源管理IC開發(fā)工具 4.0 M HIGH-SIDE SW RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| KIT33984PNAEVB | 功能描述:電源管理IC開發(fā)工具 33984 - SPD4 EVAL KIT RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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