收藏本站
QMatrix uses a pair of sensing electrodes for each channel. One is an emitting electrode into
which a charge consisting of logic pulses is driven in burst mode. The other is a receive electrode
that couples to the emitter via the overlying panel dielectric. When a finger touches the panel the
field coupling is changed, and touch is detected. The drive electrode (or drive line) used for
QMatrix charge transfer is labeled as the X line. The receiver electrode (or receive line) used for
QMatrix charge transfer is labeled as the Y line.
QMatrix circuits offer good immunity to moisture films, extreme levels of temperature stability,
superb low power characteristics, and small IC package sizes for a given key count.
5.2.3 Sensor schematics for a QMatrix acquisition method design
Atmel MCU
RX0
Sensors,
X,Y
X0
Xn
...
Sensor
0,0
Sensor
n,0
Sensor
0,m
Sensor
n,m
RXn
RY0
Y0A
...
YmA
RYm
Y0B
YmB
CS0
...
CSm
Typical values:
RX: 1k
RY: 1k
CS: 4.7nF
RYB: 470k
----------------------------------
Port-pin count =
n + (2 * m) + 2
n – number of X lines
SMP
RYB0
RYBm
m – number of Y lines
----------------------------------
Port requirements:
X: Configurable I/O pin
YA:Configurable I/O pin (*)
YB: ADC port (*)
SMP: Configurable I/O pin
Vref: AIN0 (Comparator)
Vref
(*): The port I/O pin should
be in consecutive order
Figure 5-5 : Schematics for a QMatrix acquisition method design
5.3 Global settings common to all sensors of a specific
acquisition method
The touch sensing using QTouch library could be fine tuned by using a number of configurable
settings. This section explains the settings that are common to all sensors of a specific acquisition
method like QMatrix or QTouch.
15
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ATU6-P305T-R CABLE CAT6 FULL-BOX 305M GRAY
ATUP-P305T-R CABLE CAT5E PULL-BOX 305M GRAY
ATUP-V305T-R CABLE CAT5E REEL 305M GRAY
AWG28-05/F-1/300-R CABLE 5 COND MULTI 300' RIBBON
AWG28-05/G-1/300-R CABLE 5 COND GRAY 300' RIBBON
AWG28-09/F-1/300-R CABLE 9 COND MULTI 300' RIBBON
AWG28-09/G-1/300-R CABLE 9 COND GRAY 300' RIBBON
AWG28-25/F-1/300-R CABLE 25 COND MULTI 300' RIBBON
相关代理商/技术参数
ATQT600IB 功能描述:界面开发工具 ATQT600IB Interface Brd RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V
ATQT6-XPRO 功能描述:Xplained Pro - Extension Board 制造商:atmel 系列:- 零件状态:有效 配件类型:扩展板 配套使用产品/相关产品:Xplained Pro 标准包装:1
ATR 1078 功能描述:TOOL INSERTION TWEEZER 20 GA 制造商:astro tool corp 系列:* 零件状态:有效 标准包装:1
ATR 1079 功能描述:TWEEZER INSERTION 20 GA 制造商:astro tool corp 系列:* 零件状态:有效 标准包装:1
ATR 1080 制造商:Astro Tool Corp 功能描述:TOOL INSERTION 20 GA
ATR 1080-135 功能描述:INSERTION TOOL 20 GA ANGLED TIP 制造商:astro tool corp 系列:* 零件状态:有效 标准包装:1
ATR 1080-S 功能描述:INSERTION TOOL STRAIGHT 制造商:astro tool corp 系列:* 零件状态:有效 标准包装:1
ATR 1105 功能描述:TOOL INSERTION TWEEZER 16 GA 制造商:astro tool corp 系列:* 零件状态:有效 标准包装:1