参数资料
| 型号： | QT60240-ISG QS130 |
| 厂商： | Atmel |
| 文件页数： | 3/26页 |
| 文件大小： | 0K |
| 描述： | SENSOR IC MTRX TOUCH24KEY 32-QFN |
| 标准包装： | 1 |
| 系列： | QMatrix™ |
| 类型： | 电容性 |
| 输入数/键： | 24 键 |
| 分辨率（位）： | 10 b |
| 评估套件： | 可供 |
| 数据接口： | I²C，串行，SPI? |
| 电压基准： | 外部 |
| 电源电压： | 1.8V，3.3V，5V |
| 电流 - 电源： | 4.6mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN（5x5） |
| 包装： | 剪切带 (CT) |
| 其它名称： | 427-1126-1 |
3.4 CHANGE Pin
Pin 2 (CHANGE) is an active-high output that can be used to
alert the host to key touches or key releases, thus reducing
the need for wasteful I2C communications. Normally, the host
can simply not bother to communicate with the device, except
when the CHANGE pin goes high.
CHANGE becomes active only when there is a change in key
state (either touch or touch release); CHANGE goes low
again only when the host performs a read from address 1, the
detect status register for all keys on Y0. CHANGE does not
self-clear; only an I2C read from location 1 will cause it to
clear.
It is important to read all three key state addresses to ensure
the host has a complete picture of which keys have changed.
In Shift Register mode the CHANGE pin does not operate
and should be left open.
Every key can be individually configured to wake a host
microcontroller upon a touch change; so, a product can wake
from sleep when any key state changes, or only when certain
desired keys change state. The configuration is set in the
Setups block (Section 6.13) on a key-by-key basis.
lQ
11
QT60240-ISG R8.06/0906
Figure 3.2 Shift Register Cycle
Key 0
Key 1
Key 2
Key 21
Key 22
Key 23
Key Scan
SCL
SDA
LATCH
tSCH
tSCL
Key 0
Key 3
Key 4
Key 23
tLATCH
tSDA-SCL
相关PDF资料 |
PDF描述 |
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| QT60248C-ASG | IC TOUCH SENSOR 24KEY 32TQFP |
| SA571N | IC COMPANDOR DUAL GAIN 16-DIP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| QT60248 | 制造商:QUANTUM 制造商全称:QUANTUM 功能描述:16, 24 KEY QMATRIX ICs |
| QT60248-AG | 制造商:QUANTUM 制造商全称:QUANTUM 功能描述:16, 24 KEY QMATRIX ICs |
| QT60248-AS | 功能描述:IC SENSOR 24CHAN QMATRIX 32TQFP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 触摸屏控制器 系列:QMatrix™, QProx™ 标准包装:96 系列:- 类型:- 触摸面板接口:- 输入数/键:- 分辨率（位）:- 评估套件:* 数据接口:- 数据速率/采样率 (SPS，BPS):- 电压基准:- 电源电压:- 电流 - 电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| QT60248-ASG | 功能描述:接口 - 专用 Integrated Circuit RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| QT60248-ASG SL683 | 制造商:Atmel Corporation 功能描述:Q Matrix IC 32-Pin TQFP |
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