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NDS使用的触摸屏幕 为标准电容压感方式,屏幕上面有一层压感电容的膜, 大航海家|航海游戏|游戏下载|游戏攻略|游戏秘籍|精美贴图|娱乐搞笑|电脑技术|潮流电玩|文学原创|大航海家3下载|大航海家3攻略& h% K6 `' Q- L9 @0 q) p
通过不停的测量XY方向电容值的变化来确定坐标变化,也就是感应你的触摸压力。
负责这些测量工作的IC 型号是TSC2046 德州仪器制造,主要特性指标如下: 航海游戏论坛,大航海家3,航海游戏玩家的家,开心、自由、为论坛的宗旨。9 a$ }% P4 t: ], G, @( v: |' m- X) K6 n
FEATURES
SAME PINOUT AS ADS7846
2.2V TO 5.25V OPERATION
1.5V TO 5.25V DIGITAL I/O 航
INTERNAL 2.5V REFERENCE
AUTO POWER-DOWN
AVAILABLE IN TSSOP-16, QFN-16, AND
VFBGA-48 PACKAGES
DESCRIPTION
The TSC2046 is a next-generation version to the ADS7846 OK中国休闲娱乐社区-9 d/ K# m: r% P1 H3 _
4-wire touch screen controller which supports a low-voltage 大航海家|航海游戏|游戏下载|游戏攻略|游戏秘籍|精美贴图|娱乐搞笑|电脑技术|潮流电玩|文学原创|大航海家3下载|大航海家3攻略* f4 ~; q* a+ p/ W1 ?8 F
I/O interface from 1.5V to 5.25V. The TSC2046 is 100% pincompatible
with the existing ADS7846, and will drop into the
socket. This allows for easy upgrade of current applications 航海游戏论坛,大航海家3,航海游戏玩家的家,开心、自由、为论坛的宗旨。3 J2 O, H) B) O% . {, w5 j& M
to the new version. The TSC2046 also has an onchip
2.5V reference that can be used for the auxiliary input, OK中国休闲娱乐社区-: T4 l* [* c% Y) z* n% @
battery monitor, and temperature measurement modes. The 2 x% I' C$ W: O. h+ H, S
reference can also be powered down when not used to " ^, d) H" E6 h3 l& d1 B% }2 C
conserve power. The internal reference operates down to
2.7V supply voltage, while monitoring the battery voltage
,TR,travianfrom 0V to 6V
The low-power consumption of < 0.75mW typ at 2.7V (reference
off), high-speed (up to 125kHz sample rate), and onchip
idrivers make the TSC2046 an ideal choice for batteryoperated systems such as personal digital assistants (PDAs)
with resistive touch screens, pagers, cellular phones, and
other portable equipment. The TSC2046 is available in
TSSOP-16, QFN-16, and VFBGA-48 packages and is specified
over the –40°C to +85°C temperature range.
从上面可以看出这个芯片除了能进行触摸屏控制外 还可以进行电池电压测量、温度测量等功能, 航海游戏论坛,大航海家3,航海游戏玩家的家,开心、自由、为论坛的宗旨。$ / e2 J% P+ }2 O; g
属于一个多用芯片, 这就是 "边冲边玩引起NDS屏幕失准"的第一个关联
中国休闲娱乐社区-) t; c7 G( t8 }& ?% O8 `
由于压感触摸屏幕的信号采用模拟方式,而这种模拟信号受到外部温度的影响会产生比较大的浮动偏差
就需要对外界温度进行测量然后进行纠正, 也叫做温度补偿。 www.okkq.com6 h9 @# I1 x, _" _% O& w
NDS充电时电池本身会发热,如果同时开机运行游戏,则温度补偿程序也在运作,就会把当时高温状态下的信号进行纠正并记录,长此以往纠正程序的结果就会像高温状态靠拢,则屏幕也就越来越不准了。 |
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