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參數(shù)資料
| 型號： | DEMOMPR031 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 7/33頁 |
| 文件大小： | 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
15
6
Interrupts
6.1
Introduction
The MPR03X has one interrupt output that is triggered on any touch related event. The interrupts trigger on both the up or down
motion of a finger as defined by a set of configurable thresholds.
6.2
Triggering an Interrupt
An interrupt is asserted any time data changes in the Touch Status Register (Section 5.2). This means that if an electrode touch
or release occurs, an interrupt will alert the application of the change.
6.3
Interrupt Handling
The MPR03X has one interrupt output that is asserted on any touch related event. The interrupts trigger on both the up or down
motion of a finger as defined by a set of configurable thresholds as described in Section 9. To service an interrupt, the application
must read the Touch Status Register (Section 5.2) and determine the current condition of the system. As soon as an I2C read
takes place the MPR03X will release the interrupt.
6.4
IRQ Pin
The IRQ pin is an open-drain latching interrupt output which requires an external pull-up resistor. The pin will latch down based
on the conditions in Section 6.2. The pin will de-assert when an I2C transaction reads from the MPR03X.
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