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參數資料
| 型號： | TSC2008IRGVR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
| 封裝： | 4 X 4 MM, GREEN, PLASTIC, VQFN-16 |
| 文件頁數： | 5/40頁 |
| 文件大小： | 1028K |
| 代理商： | TSC2008IRGVR |
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R
TOUCH
+
R
Xplate
@ XPostition
4096
Z
1
*1 *RYplate @ 1*
Y
Position
4096
(2)
X-Position
MeasureX-Position
MeasureZ -Position
1
Touch
X+
Y+
X
-
Y
-
Z -Position
1
Touch
X+
Y+
Y
-
X
-
MeasureZ -Position
2
Z -Position
2
Touch
X+
Y+
Y
-
X
-
www.ti.com.......................................................................................................................................................... SBAS406B – JUNE 2008 – REVISED MARCH 2009
The second method requires knowing both the X-plate and Y-plate resistance, measurement of X-Position and
Figure 22. Pressure Measurement
When the touch panel is pressed or touched and the drivers to the panel are turned on, the voltage across the
touch panel will often overshoot and then slowly settle down (decay) to a stable dc value. This effect is a result of
mechanical bouncing caused by vibration of the top layer sheet of the touch panel when the panel is pressed.
This settling time must be accounted for, or else the converted value is incorrect. Therefore, a delay must be
introduced between the time the driver for a particular measurement is turned on, and the time a measurement is
made.
In some applications, external capacitors may be required across the touch screen for filtering noise picked up by
the touch screen (for example, noise generated by the LCD panel or back-light circuitry). The value of these
capacitors provides a low-pass filter to reduce the noise, but creates an additional settling time requirement when
the panel is touched. The settling time typically shows up as gain error. The TSC2008 has a built-in noise filter
(see the Preprocessing section). These capacitors can be reduced to minimal value or not installed.
The TSC2008 touch screen interface can measure position (X,Y) and pressure (Z).
Copyright 2008–2009, Texas Instruments Incorporated
13
Product Folder Link(s): TSC2008
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TSC2008IRGVT | 功能描述:觸摸屏轉換器和控制器 Nano-Pwr Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2008IYZGR | 功能描述:觸摸屏轉換器和控制器 Nano-Pwr Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2008IYZGT | 功能描述:觸摸屏轉換器和控制器 Nano-Pwr Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2008-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER with SPIa?￠ |
| TSC2008RGVR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER with SPI? |
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