AG Neovo TSC-40-IC User Manual

Analog Resistive Touch Screen Controller TSC-40/IC product specification

TSC-40/IC Product Specification

Table of Contents

1. PRODUCTS OUTLINE .............................................................................................................2

1-1. Scope of Application ........................................................................................................................2

1-2. Outline...............................................................................................................................................2

1-3. Features ............................................................................................................................................2

1-4. General specification ........................................................................................................................3

2. Pin layout and representation................................................................................................4

3. Pin functions............................................................................................................................ 5

4. Initial setting ............................................................................................................................ 7

4-1. EEPROM setting ..............................................................................................................................7

4-2. Touch screen mode setting.............................................................................................................7

4-3. Power supply voltage setting ..........................................................................................................7

5. Data sheet ................................................................................................................................ 8

5-1. Absolute maximum rating ................................................................................................................ 8

5-2. Recommended operational conditions.............................................................................................9

5-3. Timing requirement......................................................................................................................... 10

5-4. DC standards..................................................................................................................................11

6. Packaging Specification....................................................................................................... 12

6-1. Outline.............................................................................................................................................12

6-2. Notes on storage/handling ............................................................................................................. 12

6-3. Basic packaging .............................................................................................................................12

6-4. Small group packaging ..................................................................................................................13

6-5. Tray specification............................................................................................................................14

6-6. Product name label specification ..................................................................................................14

7. Storage Specification............................................................................................................15

7-1. Storage Conditions .........................................................................................................................15

7-2. Baking .............................................................................................................................................15

8. Implementation Temperature Specification .......................................................................16

9. Terminal Pin Specification ...................................................................................................17

10. Cleaning ............................................................................................................................... 17

11. Changes and improvements..............................................................................................18

11-1. Version history..............................................................................................................................18

12. Warranty...............................................................................................................................19

12-1. Warranty Period............................................................................................................................ 19

12-2. Warranty Target............................................................................................................................ 19

12-3. Warranty Exceptions.....................................................................................................................19

13. Notes on use........................................................................................................................20

13-1. Overall handling............................................................................................................................20

13-2. Others............................................................................................................................................20

Dimensional Drawing Circuit Diagram

TSC-40/IC Product Specification

1. PRODUCTS OUTLINE

1-1. Scope of Application

This specification applies to the TSC-40/IC.

1-2. Outline

TSC-40/IC is an analog touch screen control IC that performs A/D conversion on analog signal for the 4-wire and 5-wire resistive analog touch screen, and transmits coordination data with 10bit resolution to the host in a 9600bps serial (asynchronous).

The serial communication enables a connection with PC’s serial port via RS-232C I/F circuit or TTL level.

At the coordinate detection, internal filtering process provides a stabilized coordinate value. By using the correction function, in addition to the losses that occur in the circuit, display deflection between touch screen input point that occur in each element and indicator cursor can be corrected to adjust the display position.

1-3. Features

§ Two coordinate output modes are provided and selected per application: “Coordinate data mode” where coordinate information is sent with 10bit resolution as it is, and “correction data mode” where read coordinate is converted to the indicator’s display coordinate and sent.

§ “Correction data mode“ is available after EEPROM is externally attached. It enables to set up to nine correction points. Coordinate data can be corrected with the base of correction points. Using this function allows the host driver to make the implementation of correction function unnecessary. In addition, by placing correction points at the touch screen center and center points of four edges of touch screen, resistance value deviation of transparent electrode film can be corrected.

§ Two external switch functions are always available in the coordinate (correction) data mode. Two pieces of external switch information are, at the transmission of coordinate data, included in the coordinate data as pen-down/pen-up information. Since in the pen-up mode, pen-up data can be always output to the host, this switch is available as a function switch.

§ At the touch screen input, buzzer and LED outputs are available. Input confirmation via display and sound is available.

§ When no touch screen input is performed, the state moves to “power-save mode“ so that such application can be supported that requests a low power consumption.

§ Seven types of coordinate output rates are provided and either can be selected per application among seven types: six types from 30 to 150p/s plus one type, a point mode that outputs the coordinate only one time when pen-down is performed.

TSC-40/IC Product Specification

1-4. General specification

Item Rating Notes

Power supply voltage DC 3.3V to 5.5V

Power consumption 29.5mW (standard)

Operating Temp

Temperature range at storing

Communication scheme Asynchronous, serial

Communication rate 9600bps

Communication scheme

Operation frequency 6MHz Fixed to 6MHz

Coordinate output rate (point / second)

Linearity error ±3 LSB

Data length 8bits

Stop bit 1bit

Parity None

-20 ˚C to +85 ˚C (No dew condensation)

-40 ˚C to +125 ˚C (No dew condensation)

(1) Point mode (2) 30p/s (3) 50p/s (4) 80p/s (5) 100p/s (6) 130p/s (7) 150p/s

Each setting is fixed

Point Mode: Only when touch screen is input, pen-down ID is sent once. After input ends, no pen-up ID is sent.

Input response time 10ms (TYP) 150p/s, For coordinate data mode.

Coordinate resolution 10bit (1024×1024)

Dimension (mm) 9×9×1.7

In the correction data function, resolution follows the setting value

2. Pin layout and representation

SEL0 25

RxD

TxD

SW1

SW0

BEEP

AN0

AN1

20 SXL/UR

21 SXR/LR

22 THO

23 THI

24 RxD_I 1AN2

TSC-40x

xxx

INDEX

####

2AN3

3SEL1

4EEP-DO

5VREF

19 SYU/UL

6RST

18 SYD/LL

7CNVSS

Marking specification

TSC-40x Product number x: version number

xxx ROM number

#### Lot number

TSC-40/IC Product Specification

SEL4/EEP-CS 16

SEL3/EEP-CLK 15

SEL2/EEP-DI 14

LED1 13

P30 12

VSS 11

XOUT 10

XIN 9

8VCC

3. Pin functions

TSC-40/IC Product Specification

number

Pin name I/O Functional description

1 AN2 I/O Touch screen XL/UR input pin.

2 AN3 I/O Touch screen XR/LL input pin.

3 SEL1 I

Transition select pin. H = Auto transition

*1 after reset. L = transition by command.

4 EEP-DO I EEPROM DO input pin; At using no EEPROM, Vcc or GND is connected.

5 VREF I A/D converter reference voltage input pin; Vcc is connected.

RST

I Reset input pin (active L).

7 CNVSS I Operation mode control pin; Vss is connected.

8 VCC I Power supply input pin; Vcc is connected.

9 XIN I Clock input pin; When using external clock, clock is input to this pin.

10 XOUT O Clock output pin; When using external clock, this pin is opened.

11 VSS I Power supply input pin (GND); GND is connected.

12 P30 O Opened*2.

13 LED1 O LED output pin; ON = Lo, OFF = Hi.

14*3 SEL2/EEP-DI I/O

EEPROM DI signal output pin Whether or not EEPROM is used, connect with GND via resistance EEPROM SK signal output pin

15*3 SEL3/EEP-CLK I/O

Touch screen mode setting pin. (L=4-wire, H=5-wire)

; When using EEPROM, EEPROM DI is connected.

; When using EEPROM, EEPROM SK is connected.

Whether or not EEPROM is used, connect with Vcc or GND via resistance EEPROM setting pin shared with EEPROM CS signal output pin.

16*3 SEL4/EEP-CS I/O

EEPROM is set via resistance and Vcc or GND is connected. (L = Used, H = Not used). When using EEPROM, EEPROM CS is connected.

17 O Unused pin; Opened.

18 SYD/LL O Touch screen LL control pin.

19 SYU/UL O Touch screen UL control pin.

20 SXL/UR O Touch screen UR control pin.

21 SXR/LR O Touch screen LR control pin.

22 THO O Pen down detection pin.

23 THI I In power-save mode, start signal input pin by pen down.

24 RxD_I I

25 SEL0 I

In power-save mode, start signal input pin by command reception. Only used serial mode, RxD is connected. If power supply voltage is 4.0 to 5.5V, GND is connected. If power supply voltage is

3.3 to 4.0V, Vcc is connected.

26 RxD I/O Data receive pin.

27 TxD I/O Data send pin.

28 SW1 I SW1 input pin *4; H = ON = 1, L = OFF = 0.

29 SW0 I SW0 input pin *4; H = ON = 1, L = OFF = 0.

30 BEEP O BEEP output pin; Hi output; Output frequency =2.5kHz, Output time =50ms.

31 AN0 I Touch screen YD/LL input pin.

32 AN1 I Touch screen YU/Sense input pin.

TSC-40/IC Product Specification

*1: Auto transition = Mode changes by a command are not performed. It becomes a “Coordinate Data

Mode (150pps)” immediately after reset.

*2: Always open. If connected with V

CC, VSS, or other circuit, an error operation may occur.

*3: About pin number 14, 15 and 16, immediately after a power supply injection, it works as an input

terminal and becomes an output terminal after that. Do not open these terminals.

*4: If neither SW0 nor SW1 function is used, connect 28 and 29 pins to GND directly.

TSC-40/IC Product Specification

4. Initial setting

4-1. EEPROM setting

Depending on that calibration is performed in either TSC-40/IC or host, you can select whether EEPROM is used or not to store the correction data. EEPROM selection can be set via pin number 16, where hardware reset release enables the setting.

(TSC-40/IC)

SEL4/EEP-CS

4-2. Touch screen mode setting

Touch screen mode setting for 4-wire/5-wire is performed by setting pin number 15 to “H” or “L”. When power supply is turned on, or hardware reset is released, pin number 15 is read to turn on in either 4-wire/5-wire mode.

Mode Pin number 15

4-wire touch screen GND

5-wire touch screen Vcc

4-3. Power supply voltage setting

Power supply mode setting for 3.3V/5V is performed by setting pin number 25 to “H” or “L”. When power supply is turned on, or hardware reset is released, pin number 25 is read to turn on in either 3.3V mode/5V mode.

Power supply voltage Mode Pin number 25

3.3 to 4.0V 3.3V mode Vcc

4.0 to 5.5V 5V mode GND

*When you operate it with 3.3V mode, the inside frequency of CPU works at 3MHz, and the sampling rate is 80pps max in calibration data mode.

VCC

(EEPROM)

H= Not used

L= Used

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