DMC TSC-30-IC User Manual

Analog Resistive Touch Screen Controller

TSC-30/IC product specification

TSC-30/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. Communication mode setting ...................................................................................................... 7

4-3. Touch screen mode setting ........................................................................................................ 7

4-4. Configuration in USB mode ........................................................................................................ 8

4-5. Panel ID setting (USB mode)..................................................................................................... 8

5. Data sheet .................................................................................................................. 9

5-1. Absolute maximum rating ........................................................................................................... 9

5-2. Recommended operational conditions ....................................................................................... 10

5-3. Timing requirement ................................................................................................................... 12

5-4. DC standards ............................................................................................................................ 14

6. Packaging Specification .............................................................................................. 16

6-1. Outline....................................................................................................................................... 16

6-2. Notes on storage/handling ........................................................................................................ 16

6-3. Basic packaging ........................................................................................................................ 16

6-4. Small group packaging ............................................................................................................. 17

6-5. Tray specification ...................................................................................................................... 18

6-6. Product name label specification .............................................................................................. 18

7. Storage Specification ................................................................................................. 19

7-1. Storage Conditions.................................................................................................................... 19

7-2. Baking ....................................................................................................................................... 19

8. Implementation Temperature Specification ................................................................... 20

9. Terminal Pin Specification ........................................................................................... 21

10. Cleaning ................................................................................................................. 21

11.Changes and improvements ....................................................................................... 22

11-1. Version history ........................................................................................................................ 22

12. Warranty ................................................................................................................. 24

12-1. Warranty Period ...................................................................................................................... 24

12-2. Warranty Target ...................................................................................................................... 24

12-3. Warranty Exceptions ............................................................................................................... 24

13. Notes on use ........................................................................................................... 25

13-1. Overall handling ...................................................................................................................... 25

13-2. Others ..................................................................................................................................... 25

Dimensional Drawing Circuit Diagram

TSC-30/IC Product Specification

1. Products outline

1-1. Scope of Application

This specification applies to the TSC-30/IC.

1-2. Outline

TSC-30/IC is an analog touch screen control IC that performs A/D conversion on analog signal for the 4-wire, 5-wire and 8-wire resistive analog touch screen, and transmits coordination data with 10bit resolution to the host in a 9600bps serial (asynchronous) and USB.

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.

§ USB has multi-touch screen function enable two simultaneous connections to the host.

§ 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.

§ In the serial communication, 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. In USB mode, USB suspend is supported and restored by the external interrupt of touch screen input.

§ 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-30/IC Product Specification

Item

Rating

Notes

Power supply voltage

DC 3.00V to 5.25V

Power consumption 125mW (standard)

Power supply voltage is 5V.

30mW (standard)

Power supply voltage is 3.3V.

Operating Temp

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

Temperature range at storing

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

Communication scheme (serial)

Communication scheme

Asynchronous, serial

Each setting is fixed

Communication rate

9600bps

Data length

8bits

Stop bit

1bit

Parity

None

Communication scheme (USB)

Transfer rate

USB Specification2.0 Full Speed

Transfer mode Control transfer (command)

Interrupt transfer (coordinate)

Operation frequency

6MHz

Fixed to 6MHz

Coordinate output rate (point / second)

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

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

Linearity error

±3 LSB

Input response time

10ms (TYP)

For coordinate mode, 150p/s, Serial mode

Coordinate resolution

10bit (1024×1024)

In the correction data function, resolution follows the setting value

Dimension (mm)

12×12×1.7

1-4. General specification

TSC-30/IC Product Specification

INDEX

1 2 3 4 5 6 7

8 PANEL_AD_XL

PANEL_AD_XR

SW0

SW1 CNVss

RESET

TSC-30x

XXX ######

TrON

USBVref

Vcc

Vss

LED2

LED1

PANEL_UR

PANEL_LL

PANEL_XR/LR

PANEL_XL/UR

PANEL_YU/UL

PANEL_YD/LL

D-

D+

Vcc

Vref

Vss

Xin Xout

Vcc

Vss LED0

JP3

JP4

JP5

JP6

JP7

JP8

PANEL_AD_YD

PANEL_AD_YU

EEP-CLK/JP10

EEP-CS/JP9

RxD

TxD

JP1

JP2

PANEL_THOb1

PANEL_THOa

PANEL_THI

EEP-DO/JP12

EEP-DI/JP11

RxD_I

BEEP

USB_PW

PEN_UP

PANEL_THOb3

PANEL_THOb2

2. Pin layout and representation

Marking specification

TSC-30x Product number x: version number xxx ROM number ###### Lot number

TSC-30/IC Product Specification

number

Pin name

I/O

Functional description

PANEL_AD_XL

Touch Screen XL input pin.

PANEL_AD_XR

Touch Screen XR input pin.

SW0

SW0 input pin; H=ON=1, L=OFF=0.

SW1

SW1 input pin; H=ON=1, L=OFF=0.

5 I

Unused pin. Via resistance; Vcc is connected.

6 I

Unused pin. Via resistance; Vcc is connected.

CNVss

Vss is connected.

RESET

Reset input pin (active L).

Vcc

Power supply input pin; Vcc is connected.

Vref

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

Vss

Power supply input pin (GND); GND is connected.

Xin

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

Xout

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

Vcc

Power supply input pin; Vcc is connected.

Vss

Power supply input pin (GND); GND is connected.

LED0

LED output pin; When internal initialization was finished correctly, output L.

LED1

LED output pin; Touch input, ON=L, OFF=H.

LED2

LED output pin; When a response for the command is NAK, output L.

19 O

Unused pin; Opened.

Vss

Power supply input pin (GND); GND is connected.

Vcc

Power supply input pin; Vcc is connected.

Vcc

Power supply input pin; Vcc is connected.

USBVref

USB reference voltage input pin. If Vcc is 3.3V, Vcc is connected. If Vcc is 5V, GND is connected via capacitor.

TrON

Identification signal for USB. D+ is connected via resistance (1.5k ohm).

D+

I/O

Data send/receive pin; In USB mode, D+ pin. In serial mode, GND is connected via resistance (1k to 10k ohm).

D-

I/O

Data send/receive pin; In USB mode, D- pin. In serial mode, GND is connected via resistance (1k to 10k ohm).

PANEL_YD/LL

Touch screen control pin.

PANEL_YU/UL

Touch screen control pin.

PANEL_XL/UR

Touch screen control pin.

PANEL_XR/LR

Touch screen control pin.

PANEL_LL

Touch screen control pin. Used only in 5-wire mode. In 4-wire/8-wire mode, opened.

PANEL_UR

Touch screen control pin. Used only in 5-wire mode. In 4-wire/8-wire mode, opened.

33 O

Unused pin; Opened.

34 O

Unused pin; Opened.

RxD_I

In power-save mode, start signal input pin by command reception. Only used serial communication mode.

BEEP

BEEP output pin; H output. Output frequency=2.5KHz, Output time=50ms.

USB_PW

USB power supply detection pin. In USB mode, USB-Vbus is connected. *1 In serial mode, GND is connected.

PEN_UP

GND is connected.

PANEL_THOb3

I/O

Touch screen control pin. Used only in 5-wire mode. In 4-wire/8-wire mode, opened.

3. Pin functions

TSC-30/IC Product Specification

PANEL_THOb2

I/O

Touch screen control pin. Used only in 5-wire mode. In 4-wire/8-wire mode, opened.

PANEL_THOb1

I/O

Touch screen control pin. Used only in 5-wire mode. In 4-wire /8-wire mode, opened.

PANEL_THOa

I/O

Pen down detection pin.

PANEL_THI

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

44 O

Unused pin; Opened.

45 O

Unused pin; Opened.

46 O

Unused pin; Opened.

EEP-DO/JP12

I/O

Vcc is connected. When using EEPROM, EEPROM DO is connected.

EEP-DI/JP11

I/O

When using EEPROM, EEPROM DI is connected. When not using EEPROM, Vcc is connected via resistance.

EEP-CLK/JP10

I/O

When using EEPROM, EEPROM SK is connected. When not using EEPROM, Vcc is connected via resistance.

EEP-CS/JP9

I/O

EEPROM setting pin shared with EEPROM CS signal output pin. EEPROM is set via resistance and Vcc or GND is connected. (L=Used, H=Not used) When using EEPROM, EEPROM CS is connected.

RxD

In serial mode, data receive pin. In USB mode, Vcc is connected via resistance.

TxD

In serial mode, data send pin. In USB mode, opened.

53 O

Unused pin; Opened.

54 O

Unused pin; Opened.

JP1

GND is connected.

JP2

GND is connected.

JP3

GND is connected.

JP4

Panel ID select pin.

JP5

Panel ID select pin.

JP6

Touch screen mode setting pin; L=4 / 8 wire, H=5-wire

JP7

Touch screen mode setting pin; L=4 / 5 wire, H=8-wire

JP8

In USB mode, if Vcc is 5V, Vcc is connected via resistance. If Vcc is 3.3V, GND is connected. In serial mode, Vcc is connected via resistance or GND is connected.

PANEL_AD_YD

Touch Screen YD input pin.

PANEL_AD_YU

Touch Screen YU input pin.

*1: Please be careful if you use a external power supply not to exceed the power supply voltage in this

terminal.

TSC-30/IC Product Specification

USB_PW

USB Vbus

L= Serial

H = USB

(TSC-30/IC)

EEP-CS/JP9

VCC

L= Used

H= Not used

(TSC-30/IC)

(EEPROM)

Mode

Pin number 60

Pin number 61

4-wire touch screen

GND

5-wire touch screen

Vcc

GND

8-wire touch screen

GND

Vcc

4. Initial setting

4-1. EEPROM setting

Depending on that calibration is performed in either TSC-30/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 50, where hardware reset release enables the setting.

4-2. Communication mode setting

Communication mode setting for serial/USB is performed by setting pin number 37 to “H” or “L”. When power supply is turned on, or hardware reset is released, pin number 37 is read to turn on in either USB/ serial mode.

No both communication schemes are used at a time. After the hardware reset, if setting is performed with jumper switch, the setting is enabled by power supply restart or hardware reset.

4-3. Touch screen mode setting

Touch screen mode setting for 4-wire, 5-wire or 8-wire is performed by setting pin number 60 and 61 to “H” or “L”. When power supply is turned on, or hardware reset is released, pin number 60 and 61 are read to turn on in either 4-wire, 5-wire or 8-wire mode.

TSC-30/IC Product Specification

JP4

VCC

(TSC-30/IC)

VCC

JP5

Item

Specification

USB standard

Specification Rev2.0 Full Speed

Power supply

Bus power supply / Self-Power

Device class

Vendor definition

Interrupt (coordinate) transfer interval

1ms

End point buffer size

EP0: 8byte EP1: 5byte (EP0: control transfer, EP1: interrupt transfer)

JP4

JP5

iProduct

Panel ID

L L 00h

H L 01h

L H 02h

H H 03h

Host

TSC-30/IC

End Point 0

IN/OUT

Control transfer

(Descriptor, Device Request (command))

Interrupt transfer

(Coordinate data)

End Point 1

Buffer

4-4. Configuration in USB mode

§ Basic configuration

§ Connection with Host

Coordinate data, correction value or other various output data are all output to the host as a response

to IN token. Output coordinate in coordinate data mode and correction data mode is output in the interrupt transfer, while other data is output to the host with control transfer.

4-5. Panel ID setting (USB mode)

If two (three or four) touch screens to the same host are connected simultaneously, each TSC-30/IC to the host needs panel ID setting. This function is enabled in the USB mode, by setting pin number 58 (JP4) and pin number 59 (JP5) to “ H” or “ L” . Setting is enabled when hardware is reset, where Device Descriptor’ s iProduct is set to “ 0” or “ 1” and this value is identified by the host as panel ID.

TSC-30/IC Product Specification

Item

Symbol

Ratings

Unit

Description

Minimum

Maximum

Power supply voltage

VCC

-0.3

6.5

Input voltage

-0.3

Vcc+0.3

Output voltage

-0.3

Vcc+0.3

Power consumption

PD 500

Ta=25˚C

Operation temperature

TOPR

-20

+85

˚C

Storage temperature

TSTG

-40

+125

˚C

5. Data sheet

5-1. Absolute maximum rating

TSC-30/IC Product Specification

Item

Symbol

Limits

Unit

Description

Minimum

Standard

Maximum

Power supply voltage

Vcc

3.00

5.00

5.25 V

Analog reference voltage

AVcc Vcc

Analog reference voltage

AVREF

2.0 Vcc V

Analog reference voltage USB

USBVREF

3.0 3.6

Vcc=3.6 to 4.0V

3.0 Vcc

Vcc=3.0 to 3.6V

Power supply voltage

Vss 0 V

Analog reference voltage

AVss 0 V

“H” input voltage

(Pin number 16-19, 27-50)

VIH

0.8Vcc

Vcc V

“H” input voltage

(Pin number 1-6, 51-64)

VIH

0.8Vcc

Vcc V

“H” input voltage

RESET, XIN, Pin number 7, 15

VIH

0.8Vcc

Vcc V

“H” input voltage

D+, D-

VIH

2.0 3.6 V

“L” input voltage

(Pin number 16-19, 27-50)

VIL 0

0.2Vcc V

“L” input voltage

(Pin number 1-6, 51-64)

VIL 0

0.2Vcc V

“L” input voltage

RESET, XIN, Pin number 7, 15

VIL 0

0.2VCC V

“L” input voltage

D+, D-

VIL 0

0.8 V

“H” output total peak current *1

(Pin number 16-19, 27-50)

IOH (peak)

-80

“H” output total peak current *1

(Pin number 1-6, 51-64)

IOH (peak)

-80

“L” output total peak current *1

(Pin number 27-50)

IOL (peak)

“L” output total peak current *1

(Pin number 16-19)

IOL (peak)

“L” output total peak current *1

(Pin number 1-6, 51-64)

IOL (peak)

“H” output total average current*1

(Pin number 16-19, 27-50)

IOH (avg)

-40

“H” output total average current*1

(Pin number 1-6, 51-64)

IOH (avg)

-40

“L” output total average current*1

(Pin number 27-50)

IOL (avg)

“L” output total average current*1

(Pin number 16-19)

IOL (avg)

“L” output total average current *1

(pin number 1-6, 51-64)

IOL (avg)

“H” output peak current *2

(Pin number 16-19, 27-50)

IOH (peak)

-10

“H” output peak current *2

(Pin number 1-6, 51-64)

IOH (peak)

-10

5-2. Recommended operational conditions

TSC-30/IC Product Specification

“L” output peak current *2

(Pin number 27-50)

IOH (peak)

“L” output peak current *2

(Pin number 16-19)

IOH (peak)

“L” output peak current *2

(Pin number 1-6, 51-64)

IOH (peak)

“H” output average current *3

(Pin number 16-19, 27-50)

IOH (avg)

-5

“H” output average current *3

(Pin number 1-6, 51-64)

IOH (avg)

-5

“L” output average current *3

(Pin number 27-50)

IOL (avg) 5 mA

“L” output average current *3

(Pin number 16-19)

IOL (avg)

“L” output average current *3

(Pin number 1-6, 51-64)

IOL (avg) 5 mA

Vibration frequency *4

XIN

6.0

MHz

In USB mode

Tolerance:±0.25%

*1 The total peak output current is the absolute value of the peak currents flowing through all the

applicable ports. The total average output current is the average value of the absolute value of the

currents measured over 100ms flowing through all the applicable ports. *2 The peak output current is the absolute value of the peak current flowing in each port. *3 The average output current is the average value of the absolute value of the currents measured over

100ms. *4 The duty of oscillation frequency is 50%.

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