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參數(shù)資料
| 型號(hào)： | 74LCX541BQX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 4/10頁 |
| 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 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-WQFN 裸露焊盤，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： | 74LCX541BQXDKR |
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
DS41393B-page 14
Preliminary
2009-2012 Microchip Technology Inc.
3.5
8-Wire Touch Sensor Interface
Sensor tail pinouts can vary by manufacturer and part
number. Ensure 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.
The 8-wire sensor differs from a 4-wire sensor in that
each edge of an 8-wire sensor has a secondary
connection brought to the sensor’s tail. These
secondary connections are referred to as “sense” lines.
The controller pins associated with the sense line for an
8-wire sensor contain an ‘S’ prefix in their respective
names. For example, the SY- pin is the sense line
connection associated with the main Y- pin connection.
Consult with the sensor manufacturer’s specification to
determine which member of each edge connected pair
is the special 8-wire “sense” connection. Incorrectly
connecting the sense and excite lines to the controller
will adversely affect performance.
The controller requires that the main and “sense” tail
pin pairs for sensor edges be connected to controller
pin pairs as follows:
Y- and SY-
Y+ and SY+
X- and 5WSX-
X+ and SX+
Connections to a 8-wire touch sensor are shown in
Figure 3-4 below.
FIGURE 3-4:
8-WIRE TOUCH SENSOR INTERFACE
See
and
Section 3.9 “Noise Considerations” for important
information regarding the capacitance of the controller
schematic hardware.
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| 74LCX541BQX_08 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs |
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| 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 邏輯類型:緩沖器，非反向 元件數(shù):1 每元件位數(shù):8 輸入類型:- 輸出類型: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 |
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| 74LCX541M | 制造商:STMicroelectronics 功能描述:LVC/LCX/Z SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
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