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Resumen del manual
8 5-1. Version History ............................................................................................................................. 8 6. Warranty .............................................................................................................................. 9 6-1. Warranty Period ........................................................................................................................... 9 6-2. Warranty Target ........................................................................................................................... 9 6-3. Warranty Exceptions ..................................................................................................................... 9 7. Precautions for Use .......................................................................................................... 10 7-1. General Handling........................................................................................................................ 10 7-2. Others ........................................................................................................................................ 10 Dimensional Drawing 1. Product Overview 1-1. Products Applicable This specification is applicable to TSC-34/U-L. 1-2. Overview TSC-34/U-L is a touch screen controller board that performs an A/D conversion of an analog signal of a 4 wire resistive touch screen, and transmits the coordinate data to the host in a 10-bit resolution via USB interface. TSC-34/U-L can be used for various applications for its functions including the power saving mode, seven sampling speed settings (max. 150p/s *1), two external switch connections, and automatic calibration data loading with an external EEPROM. TSC-34/U-L is a succeeding model of the boards of the TSC-10/USB-PI. TSC-34/U-L is lead-free and compliant with RoHS. § TSC-34/U-L TSC-34/U-L dispenses a need to newly design the peripheral circuits, and can easily be used by connecting to the touch screen and the host. Using the driver software *2 enables the mouse emulation on various operation systems and dispenses the need to newly design the controller software. TSC-34/U-L is the product compatible with software of the TSC-10/USB-PI. *1: 150 transmissions of coordinate data per second. *2: Please contact the local sales representatives for software availability. 1-3. Peripheral Composition Overview A resistive touch screen is operated by resistance sensitive system between two layers such as film or glass. Two pieces of transparent materials with conductive coating are placed in the same direction as two electrodes face each other. The touch screen is activated when these transparent conductive layers are pressed to contact each other with a finger or a pen. The one of these conductive layers functions as an X-coordinates electric circuits and the other as a Y-coordinates circuits. To measure the X-coordinates TSC-34/U-L supplies voltage, Vcc to the one of X-coordinates electrodes with GND to the other. When the touch screen is pressed under this environment the voltage of the X-coordinates re- sistance is detected by the Y-coordinates electrode (A_in) at the input point (x1), where the X-Y coordinate resistance layers make contact. The detected voltage in supply side is higher than the GND side, which means ‘A_in’=Vcc at the point ‘E’ and ‘A_in’=0(*1) at the point ‘A’. TSC-34/U-L calculates coordinates data starting from A/D conversion of the ‘A_in’ voltage. The Y-coordinates is measured in the same way. By repeating this process alternately, coordinate value at the input point is determined. (*1) Excluding the loss in the controller circuits and touch screen. Actual detected voltage should be low- er than ‘Vcc - GND’ because of loss happened in the circuitry. xl X-resistive-layer (reverse side) Y-resistive-layer A_in E D C B A A_ in Vcc Y electrode X electrode (reverse side) Touch Vcc = 5.0V xl A_in Output Data A 0V 0000h (Min.) B 1.25V 00FFh C 2.5V 01FFh D 3.75V 02FFh E 5V 03FFh (Max.) Y-resistive-layer To host USB (TSC-34/U-L) (Touch Screen) A B C D E (TSC-30/IC) Vcc Touch X-resistive-layer A_in xl 2. Specifications General Specifications Item Rating Remarks Operating Temp. 0°C to +70°C No dew condensation Storing Temp. -20°C to +85°C No dew condensation Supply Voltage DC 4.0V to 5.25V Consumption Current 25mA 150p/s, Vin=Vbus, Touch screen is activated. Correspondence (USB) Spec USB Specification 2.0 Full Speed Transfer Mode Control transfer (command) Interrupt transfer (coordinate) Device class Vendor definition Frequency 6MHz 6MHz fixed Dimension 30 x 53 mm Max height of components 4.8 mm Performance Specifications Description Rating Note Coordinate Output Rate (point/sec) (1) point mode (2) 30p/s (3) 50p/s (4) 80p/s (5) 100p/s (6) 130p/s (7) 150p/s Default: 150pps with DMC original driver software. Coordinate Resolution 10bit (1024 x 1024) The value will be lower in the active area of the touch screen Linearity Error .3 LSB ...