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參數(shù)資料
| 型號： | AT42QT2161-MMU |
| 廠商： | Atmel |
| 文件頁數(shù)： | 12/14頁 |
| 文件大小： | 0K |
| 描述： | IC TOUCH SENSOR 16KEY 28QFN |
| 標準包裝： | 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： | 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： | 標準包裝 |
| 其它名稱： | AT42QT2161-MMUDKR |
7
9614A–AT42–08/10
AT42QT2161
3.
Hardware and Functional
3.1
Matrix Scan Sequence
The circuit operates by scanning each key sequentially, key by key. Key scanning begins with
location X = 0, Y = 0 (key 0). X axis keys are known as rows while Y axis keys are referred to as
columns although this has no reflection on actual wiring. Keys are scanned sequentially by row,
for example the sequence X0Y0 X1Y0 – X7Y0, X0Y1, X1Y1... etc. Keys are also numbered from
0 – 15. Key 0 is located at X0Y0. Table 3-1 shows the key numbering.
Table 3-1.
Key Numbers
Each key is sampled in a burst of acquisition pulses whose length is determined by the Setups
parameter BL (Section 3.2 on page 8); this can be set on a per-key basis. A burst is completed
entirely before the next key is sampled; at the end of each burst the resulting signal is converted
to digital form and processed. The burst length directly impacts key gain; each key can have a
unique burst length in order to allow tailoring of key sensitivity on a key-by-key basis.
X7
X6
X5
X4
X3
X2
X1
X0
Y0
765
432
10
Key numbers
Y1
15
14
13
12
11
10
9
8
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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 |
| AT42QT2640-AU | 功能描述:Capacitive Touch Buttons, Slider, Wheel 44-TQFP (10x10) 制造商:atmel 系列:QMatrix?? 包裝:托盤 零件狀態(tài):有效 類型:按鈕，滑塊，撥輪 接近探測:無 輸入數(shù):最高 64 LED 驅(qū)動器通道:- 接口:SPI 分辨率:11 b 電壓 - 電源:4.75 V ~ 5.25 V 電流 - 電源:13mA 工作溫度:-40°C ~ 105°C 封裝/外殼:44-TQFP 供應(yīng)商器件封裝:44-TQFP（10x10） 標準包裝:160 |
| AT42QT2640-AUR | 功能描述:64 CHANNEL QMATRIX FMEA EN60730 制造商:microchip technology 系列:QMatrix?? 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:按鈕，滑塊，撥輪 接近探測:無 輸入數(shù):最高 64 LED 驅(qū)動器通道:- 接口:SPI 分辨率:11 b 電壓 - 電源:4.75 V ~ 5.25 V 電流 - 電源:13mA 工作溫度:-40°C ~ 105°C 封裝/外殼:44-TQFP 供應(yīng)商器件封裝:44-TQFP（10x10） 標準包裝:1 |
| 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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