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參數資料
| 型號： | TSC2003IPWRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| 封裝： | GREEN, PLASTIC, TSSOP-16 |
| 文件頁數： | 17/28頁 |
| 文件大小： | 560K |
| 代理商： | TSC2003IPWRQ1 |
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PENIRQ Output
PENIRQ
V
DD
10k
30k
to 100k
ON
Y+ or X+ drivers on,
or TEMP0, TEMP1
measurements activated
Y+
X+
Y–
TEMP0
TEMP1
TEMP
DIODE
HIGH except
when TEMP0,
TEMP1 activated
V
DD
V
DD
SBAS454 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
The pen-interrupt output function is shown in Figure 18. By connecting a pullup resistor to VDD (typically 100 k),
the PENIRQ output is high. While in the power-down mode, with PD0 = 0, the Y– driver is on and connected to
GND, and the PENIRQ output is connected to the X+ input. When the panel is touched, the X+ input is pulled to
ground through the touch screen, and PENIRQ output goes low due to the current path through the panel to
GND, initiating an interrupt to the processor. During the measurement cycle for X, Y, and Z positions, the X+
input is disconnected from the PENIRQ pulldown transistor to eliminate any leakage current from the pullup
resistor to flow through the touch screen, thus causing no errors.
Figure 18. PENIRQ Functional Block Diagram
In addition to the measurement cycles for X-, Y-, and Z-position, commands which activate the X-drivers,
Y-drivers, Y+ and X-drivers without performing a measurement also disconnect the X+ input from the PENIRQ
pulldown transistor and disable the pen-interrupt output function regardless of the value of the PD0 bit. Under
these conditions, the PENIRQ output is forced low. Furthermore, if the last command byte written to the
TSC2003 contains PD0 = 1, the pen-interrupt output function is disabled and is not able to detect when the panel
is touched. To re-enable the pen-interrupt output function under these circumstances, a command byte needs to
be written to the TSC2003 with PD0 = 0.
Once the bus master sends the address byte with R/W = 0 (see Figure 12) and the TSC2003 sends an
acknowledge, the pen-interrupt function is disabled. If the command that follows the address byte has PD0 = 0,
then the pen-interrupt function is enabled at the end of a conversion. This is approximately 10
s (12-bit mode)
or 7
s (8-bit mode) after the TSC2003 receives a Stop/Start condition following the reception of a command
In both cases listed above, it is recommended that the master processor mask the interrupt which the PENIRQ is
associated with whenever the host writes to the TSC2003. This prevents false triggering of interrupts when the
PENIRQ line is disabled in the cases listed above.
24
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TSC2003-Q1
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| TSC2003I | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| TSC2003IR | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TSC2003IR | 功能描述:IC TOUCH SCREEN CNTRLLR 16-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 觸摸屏控制器 系列:- 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數/鍵:- 分辨率（位）:- 評估套件:* 數據接口:- 數據速率/采樣率 (SPS，BPS):- 電壓基準:- 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） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| TSC2003IZQCR | 功能描述:觸摸屏轉換器和控制器 4-wire 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 |
| TSC2003-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:I2C TOUCH SCREEN CONTROLLER |
| TSC2004 | 制造商:BB 制造商全稱:BB 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire TOUCH SCREEN CONTROLLER with I2C⑩ Interface |
| TSC2004_12 | 制造商:BB 制造商全稱:BB 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire |
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