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參數(shù)資料
| 型號(hào)： | 74LCX541BQX |
| 廠商： | Fairchild Semiconductor |
| 文件頁(yè)數(shù)： | 2/10頁(yè) |
| 文件大小： | 0K |
| 描述： | IC BUFF/DVR 8BIT LOW V 20QFN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | 74LCX |
| 邏輯類(lèi)型： | 緩沖器/線路驅(qū)動(dòng)器，非反相 |
| 元件數(shù)： | 1 |
| 每個(gè)元件的位元數(shù)： | 8 |
| 輸出電流高，低： | 24mA，24mA |
| 電源電壓： | 2 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 20-WQFN 裸露焊盤(pán)，20-DQFN |
| 供應(yīng)商設(shè)備封裝： | 20-DQFN |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱(chēng)： | 74LCX541BQXDKR |
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
DS41393B-page 12
Preliminary
2009-2012 Microchip Technology Inc.
3.2
4, 5, 8-Wire Sensor Selection
The desired sensor type of 4/8-wire or 5-wire is
hardware selectable using pin M2.
If 4/8-wire has been hardware-selected, then the
choice of 4-wire or 8-wire is software-selectable via the
TouchOptions Configuration register.
When 4/8-wire is hardware-selected, the controller
defaults to 4-wire operation. If 8-wire operation is
desired, then the TouchOptions Configuration register
must be changed.
3.3
4-Wire Touch Sensor Interface
Sensor tail pinouts can vary by manufacturer and part
number. Ensure that both sensor tail pins for one
sensor axis (layer) are connected to the controller’s
X-/X+ pins and the tail pins for the other sensor axis
(layer) are connected to the controller’s Y-/Y+ pins. The
controller’s X-/X+ and Y-/Y+ pin pairs do not need to
connect to a specific sensor axis. The orientation of
controller pins X- and X+ to the two sides of a given
sensor axis is not important. Likewise, the orientation of
controller pins Y- and Y+ to the two sides of the other
sensor axis is not important.
Connections to a 4-wire touch sensor are as follows
(See Figure 3-2).
FIGURE 3-2:
4-WIRE TOUCH SENSOR INTERFACE
Tie unused controller pins 5WSX-, SX+, SY-, and SY+
to VSS.
See
and
Section 3.9 “Noise Considerations” for important
information regarding the capacitance of the controller
schematic hardware.
TABLE 3-1:
4/8-WIRE vs. 5-WIRE
SELECTION
Type
M2 pin
4/8-wire
VSS
5-wire
VDD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LCX541BQX_08 | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs |
| 74LCX541BQX2 | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs |
| 74LCX541FT(AE) | 功能描述:Buffer, Non-Inverting 1 Element 8 Bit per Element Push-Pull Output 20-TSSOP 制造商:toshiba semiconductor and storage 系列:TC74LCX 包裝:帶卷（TR） 零件狀態(tài):有效 邏輯類(lèi)型:緩沖器，非反向 元件數(shù):1 每元件位數(shù):8 輸入類(lèi)型:- 輸出類(lèi)型:推挽式 電流 - 輸出高，低:24mA，24mA 電壓 - 電源:1.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C（TA） 安裝類(lèi)型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:20-TSSOP 標(biāo)準(zhǔn)包裝:2,500 |
| 74LCX541FT(AJ) | 功能描述:X34 PB-F LCX TSSOP 20 CMOS LOGIC 制造商:toshiba semiconductor and storage 系列:74LCX 包裝:剪切帶（CT） 零件狀態(tài):在售 邏輯類(lèi)型:緩沖器，非反向 元件數(shù):1 每元件位數(shù):8 輸入類(lèi)型:- 輸出類(lèi)型:推挽式 電流 - 輸出高，低:24mA，24mA 電壓 - 電源:1.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C（TA） 安裝類(lèi)型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:20-TSSOPB 標(biāo)準(zhǔn)包裝:1 |
| 74LCX541M | 制造商:STMicroelectronics 功能描述:LVC/LCX/Z SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
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