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| 型號： | AT42QT1070-MMH |
| 廠商： | ATMEL CORP |
| 元件分類： | Proximity Sensor |
| 英文描述： | PROXIMITY SENSOR-CAPACITIVE, 0.6-2.6V, SQUARE, SURFACE MOUNT |
| 封裝： | 3 X 3 MM, 0.85 MM HEIGHT, 0.45 MM PITCH, ROHS COMPLIANT, PLASTIC, VQFN-20 |
| 文件頁數(shù)： | 25/38頁 |
| 文件大小： | 509K |
| 代理商： | AT42QT1070-MMH |
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31
9596A–AT42–10/10
AT42QT1070
Appendix A.
I2C-compatible Operation
A.1
Interface Bus
The device communicates with the host over an I2C-compatible bus. The following sections give
an overview of the bus; more detailed information is available from www.i2C-bus.org. Devices
are connected to the I
2C-compatible bus as shown in Figure A-1. Both bus lines are connected
to Vdd via pull-up resistors. The bus drivers of all I2C-compatible devices must be open-drain
type. This implements a wired “AND” function that allows any and all devices to drive the bus,
one at a time. A low level on the bus is generated when a device outputs a zero.
Figure A-1.
I2C-compatible Interface Bus
A.2
Transferring Data Bits
Each data bit transferred on the bus is accompanied by a pulse on the clock line. The level of the
data line must be stable when the clock line is high; the only exception to this rule is for
generating START and STOP conditions.
Figure A-2.
Data Transfer
A.3
START and STOP Conditions
The host initiates and terminates a data transmission. The transmission is initiated when the
host issues a START condition on the bus, and is terminated when the host issues a STOP
condition. Between the START and STOP conditions, the bus is considered busy. As shown in
Figure A-3, START and STOP conditions are signaled by changing the level of the SDA line
when the SCL line is high.
Vdd
Device 1
Device 2
Device 3
Device n
R1
R2
SDA
SCL
SDA
SCL
Data Stable
Data Change
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| AT42QT1070-MMH QS529 | 功能描述:IC TOUCH SENSOR 7KEY 20VQFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:QTouch™ 標(biāo)準(zhǔn)包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準(zhǔn):- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AT42QT1070-MMHR | |
| AT42QT1070-SSU | 功能描述:電容觸摸傳感器 QTouch 7 Ch. Touch Sensor IC RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍: |
| AT42QT1070-SSU QS529 | 功能描述:IC TOUCH SENSOR 7KEY 14SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:QTouch™ 標(biāo)準(zhǔn)包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準(zhǔn):- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
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