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Document No. DEM-S0071A 

Rev.1.1    ©2020 DMC Co., Ltd. 

 

TSC-52/U User

’s Guide 

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-52/U 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 resistance 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-52/U calculates coordinates data starting from A/D con-

version 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 lower 
than 

‘Vcc - GND’ because of loss happened in the circuitry. 

 

 
 

 

xl 

A_in

 

Output Data 

0V 

0000h  (Min.) 

1.25V 

00FFh 

2.5V 

01FFh 

3.75V 

02FFh 

5V 

03FFh  (Max.) 

 
 
 
 

 
 

 
 
 
 
 

 

 
 

 

 
 
 
 
 
 

 

Vcc 

=  5.0V 

 

xl 

A_in 

X-resistive-layer 

Y-resistive-layer 

Touch 

Vcc 

(TSC-52/IC) 

(Touch  Screen) 

TSC-52/U 

(RS

-2

3

2

C/USB)

 

To host 

Y-resistive-layer 

X-resistive-layer  (reverse  side) 

xl 

X  electrode 

(reverse  side) 

Y electrode 

Vcc 

A_in 

Summary of Contents for TSC-52/U

Page 1: ...Analog Resistive Touch Screen Controller Board with Gesture Function TSC 52 U User s Guide...

Page 2: ...Connector 7 3 1 Explanation of a connector terminal 7 3 2 The mounted connector 7 4 Interface type 8 4 1 Serial mode 8 4 2 USB mode 8 5 Packing Specification 9 5 1 Outline 9 5 2 Packing material 9 5 3...

Page 3: ...then send them to host computer Filtering processing function in the IC during detecting coordinates data enables to obtain stable coordinates data Also using compensa tion function on the host comput...

Page 4: ...e of the X coordinates resistance 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 h...

Page 5: ...bigger While Pinch in is defined as the motion that when 2 points are input the dis tance between them moves narrower There are two case in Pinch in Pinch out as shown be low 2 Rotation Rotation is de...

Page 6: ...condensation Supply Voltage DC 5 0V 5 Consumption Current 55mA TYP In USB mode Vin 5 0V one point touch input Correspondence Serial Format Asynchronous Serial Fixed value Transfer Rate 9600bps Data Fo...

Page 7: ...ive area of the touch screen Linearity Error 3 LSB Input Response Time 10ms TYP 2 point Input Resolution Min 2 point input able distance 7mm typ After gesture calibration 4mm typ with LST 121B080A 12...

Page 8: ...RS 232C Data Output 2 Din RS 232C Data Input 3 GND RS 232C GND CN5 1 XL Touch screen Input XL 2 YU Touch screen Input YU 3 XR Touch screen Input XR 4 YD Touch screen Input YD CN8 1 I2C0_SDA Unused 2...

Page 9: ...power on of TSC 52 U and computer Because it may cause malfunction 4 1 Serial mode In serial mode please use CN3 for connecting to host computer and CN1 for power supply Specifications Transmission fo...

Page 10: ...type and puts it in a packing box 5 2 Packing material Outer case 75 x 55 x 15 mm clay coated newsback board Cushioning 120 x 70 mm air packing static protection 5 3 Outer case and lot label T S C 5...

Page 11: ...lot number 3I09 3 the last digits of the year I Month Jan A Jul G Feb B Aug H Mar C Sep I Apr D Oct J May E Nov K Jun F Dec L 09 Date manufactured S01 Control number for DMC use 00001 Serial number 5...

Page 12: ...11 Rev 1 1 2020 DMC Co Ltd TSC 52 U User s Guide 6 Changes Improvements 6 1 Version History Ver 1 0 October 28 2020 First edition release Ver 1 1 November 20 2020 2 Specifications Performance Specifi...

Page 13: ...ng this product Onsite repair or replacement is not supported We will do our best for delivery problem and product defections but the warranty for the production line is not covered 7 3 Warranty Excep...

Page 14: ...or use in standard applications computers office automation and other office equipment industrial communications and measurement equipment personal and household devices etc Please avoid using this pr...

Page 15: ......

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