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參數(shù)資料
| 型號： | AT42QT2161-MMU |
| 廠商： | Atmel |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TOUCH SENSOR 16KEY 28QFN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QMatrix™, QSlide™ |
| 類型： | 電容性 |
| 觸摸面板接口： | 8，2 線 |
| 輸入數(shù)/鍵： | 16 鍵，滑塊 |
| 分辨率（位）： | 10 b |
| 評估套件： | * |
| 數(shù)據(jù)接口： | I²C，串行 |
| 電壓基準(zhǔn)： | 內(nèi)部 |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 電流 - 電源： | 1.14mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 28-VQFN |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | AT42QT2161-MMUDKR |
6
9614A–AT42–08/10
AT42QT2161
The QT2161 includes all signal processing functions necessary to provide stable
sensing under a wide variety of changing conditions. Only a few external parts are
required for operation. The entire circuit can be built within a few square
centimeters of single-sided PCB area. CEM-1 and FR1 punched, single-sided
materials can be used for the lowest possible cost. The PCB’s rear can be mounted
flush on the back of a glass or plastic panel using a conventional adhesive, such as
3M VHB two-sided adhesive acrylic film.
The device uses an I2C-compatible interface to allow key data to be extracted and
to permit individual key parameter setup. The command structure is designed to
minimize the amount of data traffic while maximizing the amount of information
conveyed.
In addition to normal operating and setup functions the device can also report back
actual signal strengths.
Figure 2-1.
Field Flow Between X and Y Elements
2.2
Keys and Slider
The QT2161 is capable of a maximum of 16 keys. These can be located anywhere within an
electrical grid of 8X and 2Y scan lines.
A lesser number of enabled keys will cause any unused acquisition burst timeslots to be pared
from the sampling sequence, to optimize acquire speed and lessen power consumption. Thus, if
only 8 keys are actually enabled, only 8 timeslots are used for scanning.
Additional processing can be done on the keys to form a slider. The slider will have to start at X0
and use only Y0. The slider can consist of a minimum of 2 keys and a maximum of 8 keys.
2.3
Enabling/Disabling Keys
Keys can be enabled by setting a nonzero burst length. A zero burst length disables the key.
overlying panel
X
element
Y
elem ent
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT42QT2161-MMU QS519 | 制造商:Atmel Corporation 功能描述:QSLIDE, 16 KEY - QMATRIX SENSO |
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| AT42QT4120 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Patented spread-spectrum charge-transfer (transverse mode) |
| AT42QT4160 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Patented spread-spectrum charge-transfer (transverse mode) |
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