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參數(shù)資料
| 型號： | TSC2200EVM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TSC2200 Touch Screen Controller Evaluation Module(TSC2200觸摸屏控制器評估模塊) |
| 中文描述： | TSC2200觸摸屏控制器評估模塊（TSC2200觸摸屏控制器評估模塊） |
| 文件頁數(shù)： | 29/45頁 |
| 文件大?。?/td> | 468K |
| 代理商： | TSC2200EVM |
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Operation
3-11
is pulled HIGH by R1, so that if no parallel port is connected, U1's outputs are tri-stated,
allowing the external SPI bus to drive the TSC2200. When the PC parallel port is
connected, the PC software will pull pin 1 of the parallel port, which is connected to pin 1
of U1, LOW in order to enable the PC to control the SPI bus.
Each signal from the SPI inputs is buffered through open drain buffers (U4, U5). These
buffers translate the input signals to 3.3V logic levels to drive the touch screen controller;
likewise, output signals from the controller are translated to 5V logic levels. These signals
are all connected to J6, the digital interface to the daughter card. On the daughter card,
these signals are connected directly to the TSC2200.
An I
logic levels to the device are 3.3V logic, and logic levels to the PC are 5V. The I
are routed to J9, the I
signals are routed to a footprint for a 24LC64 EEPROM, which is not installed. This is to
allow for extra functionality for future applications.
2
C interface is provided from the PC parallel port, and this too is level shifted so that
C signals
C interface to the daughter card. On the daughter card, these
3.3.3 Touch Screen and Analog Inputs
On the motherboard, terminal block J7 provides input connection points for the battery
and auxiliary inputs. Battery inputs may range from 0VDC to 6VDC, and the auxiliary
inputs can range from 0VDC to 2.5VDC. The touch screen can be connected to J8 on the
motherboard.
Each of these eight inputs has provision for an RC filter to be placed in line with the
signal. As shipped, all the resistors are 0
s, and the capacitors are not installed. If noisy
conditions prevent obtaining good readings from the TSC2200, 0.1uF capacitors may be
installed in positions C6 through C13. If more filtering is required, the 0
resistors should
be unsoldered from the board and replaced with small resistors. Note that increasing the
capacitance on the touch screen inputs will require increased panel voltage stabilization
time, as well as increased precharge and sense times, thus lowering the available number
of readings per second.
The filtered signals for all the analog inputs are routed to J10, the X-Y Interface to the
daughter card. On the daughter card, these signals are connected directly to the
TSC2200.
3.3.4 Keypad Interface
A 4x4 matrix keypad is on the daughter card. This keypad connects directly to the
TSC2200. No other circuitry is needed since the TSC2200 contains all the keypad control
circuitry.
Do not drive the external SPI bus when the PC parallel port is
connected. Disconnect the PC parallel port cable from the
TSC100PM if you want to use the external SPI bus.
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| TSC2200IPW | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IPWG4 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IPWR | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IPWRG4 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| TSC2200IRHB | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/12-Bit 125KHz ADC & Key Ifc RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
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