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參數(shù)資料
| 型號(hào)： | DEMOMPR031 |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 33/33頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DEMO FOR MPR031 CTLR |
| 產(chǎn)品培訓(xùn)模塊： | MPR03x - Low-Power Proximity Sensors |
| 視頻文件： | DEMOPR031 Touch Sensor |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 傳感器類型： | 觸摸，電容式 |
| 接口： | I²C |
| 電源電壓： | 1.71 V ~ 2.75 V |
| 嵌入式： | 否 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MPR031 |
| 產(chǎn)品目錄頁(yè)面： | 2808 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | MPR031EPR2DKR-ND - IC CTLR TOUCH SENSOR 8-DFN MPR031EPR2CT-ND - IC CTLR TOUCH SENSOR 8-DFN MPR031EPR2TR-ND - IC CTLR TOUCH SENSOR 8-DFN |
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MPR03X
Sensors
Freescale Semiconductor
9
4
Modes of Operation
4.1
Introduction
MPR03X’s operation modes are Stop, Run1, and Run2. Stop mode is the start-up and configuration mode.
4.2
Stop Mode
In Stop mode, the MPR03X does not monitor any of the electrodes. This mode is the lowest power state.
4.2.1
Initial Power Up
On power-up, the device is in Stop mode, registers are reset to the initial values shown in Table 4, and MPR03X starts in Stop
mode drawing minimal supply current. The user configurable pin IRQ/ELE2 defaults to being the interrupt output IRQ function.
IRQ is reset on power-up, and so defaults to logic high. Since the IRQ is an open-drain output, IRQ will be high impedance.
4.2.2
Stop Mode Usage
In order to set the configuration registers, the device must be in stop mode. This is achieved by setting the EleEn field in the
Electrode Configuration register to zero.
Table 4. Power-Up Register Configurations
Register
Power-Up Condition
Register Address
HEX Value
Cleared
0x00
Cleared
0x02
0x00
Cleared
0x03
0x00
Cleared
0x04
0x00
Cleared
0x05
0x00
Cleared
0x06
0x00
Cleared
0x07
0x00
Cleared
0x1A
0x00
Cleared
0x1B
0x00
Cleared
0x1C
0x00
Cleared
0x26
0x00
Cleared
0x27
0x00
Cleared
0x28
0x00
Cleared
0x29
0x00
Cleared
0x2A
0x00
Cleared
0x2B
0x00
Cleared
0x2C
0x00
Cleared
0x2D
0x00
Cleared
0x2E
0x00
6 AFE samples, 16 A charge current
0x41
0x10
16 ms detection sample interval,
4 samples for the second level filter,
0.5 S charge time
0x43
0x24
Stop mode. ELE2/IRQ pin is interrupt
function,
0x44
0x00
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