Capacitive Touch Adapter
DatasheetCapacitive Touch Adapter Datasheet

Revision HistoryDate

Doc. Rev.

Board VersionChanges

20-Jul-17

Rev. 1.0

V1.0Internal Sample

02-Nov-17

Rev. 1.1

V1.0-

Updated product image on the cover page
Section 4.2.4, Connection with Aster Carrier Board:
Removed detail related to Aster V1.0 board

27-Mar-19

Rev. 1.2

V1.0-Section 4.2.4, Typo correction

08-May-19

Rev. 1.3

V1.0-Section 4.2.4, Corrected SODIM numbers

27-Oct-22

Rev. 1.4

V1.0-Section 4, Removed 3.3V optional connection from thetables
Updated disclaimer
Updated company address and email
Minor cosmetic changes
Updated company address and email-Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

Contents
1.

Introduction ........................................................................................................................................... 4
1.1. Reference Documents ......................................................................................................................... 4
1.1.1
Apalis Computer Modules............................................................................................................ 4
1.1.2
Colibri Computer Modules ........................................................................................................... 4
1.1.3
Toradex Developer Website ........................................................................................................ 4

2.

Features ................................................................................................................................................. 5
2.1.

Overview ................................................................................................................................................ 5

2.2.

Hardware Architecture Block Diagram ............................................................................................... 5

2.3.

Hardware Setup .................................................................................................................................... 62.4. Physical Drawings................................................................................................................................. 72.4.1
Top Side Connectors .................................................................................................................... 73.

4.

Interface Description ........................................................................................................................... 8
3.1.

Capacitive Touch Header (X1) ............................................................................................................ 8

3.2.

Capacitive Touch FFC Connector (X2) ............................................................................................. 8Pin Mapping .......................................................................................................................................... 94.1. Apalis Carrier Boards ........................................................................................................................... 94.1.1
Connection with Apalis Evaluation Board.................................................................................. 94.1.2
Connection with Ixora Carrier Board .......................................................................................... 94.2. Colibri Carrier Boards ......................................................................................................................... 104.2.1
Connection with Colibri Evaluation Board ............................................................................... 104.2.2
Connection with Iris Carrier Board ........................................................................................... 104.2.3
Connection with Viola Carrier Board ........................................................................................ 104.2.4
Connection with Aster Carrier Board ....................................................................................... 115.

Electrical Characteristics ................................................................................................................. 125.1.

6.

Temperature Range ........................................................................................................................... 126.1.

7.

Electrical Specifications ..................................................................................................................... 12

Operating Temperature Range ......................................................................................................... 12

Mechanical Data ................................................................................................................................. 13
7.1.

Capacitive Touch Adapter Dimensions - Top Side ........................................................................ 13

8.

Design Data ......................................................................................................................................... 13

9.

Product Compliance .......................................................................................................................... 14

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

1. Introduction
The Capacitive Touch Adapter is an add-on board for the Toradex carrier boards. The adapter canbe used to connect capacitive touch interface signals between the display and the Colibri / Apalis
carrier board which doesn’t feature capacitive touch connector on the carrier board.

1.1. Reference Documents
For detailed technical information on the suitable computer modules and other reference
documents, please refer the following sections:

1.1.1

Apalis Computer Modules

An overview of the Apalis product family:
https://www.toradex.com/computer-on-modules/apalis-arm-family

1.1.2

Colibri Computer Modules

An overview of the Colibri product family:
https://www.toradex.com/computer-on-modules/colibri-arm-family

1.1.3

Toradex Developer Website

http://developer.toradex.com/Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

2. Features
2.1. Overview
The Capacitive Touch Adapter features:•

10 way FFC connector compatible with Toradex Capacitive Touch Connector.

2.2. Hardware Architecture Block Diagram

Fig.1 Capacitive Touch Adapter Hardware Architecture

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

2.3. Hardware Setup
The following block diagram represents the set-up required to use/test a Capacitive Touch
Adapter:

Capacitive Touch Display

FFC Cable
10 ways

X2

FFC Cable
40 ways

Capacitive Touch
Adapter V1.0
X1PatchCable

Unified Interface
Display Connector

Colibri / Apalis Carrier Board
Fig.2 Hardware Set-up Block Diagram

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

2.4. Physical Drawings
2.4.1

Top Side Connectors

X1X2Fig.3 Capacitive Touch Adapter Connectors – Top Side
RefDescription

X1

Capacitive Touch Header

X2

Capacitive Touch FFC Connector

Remarks

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

3. Interface Description
3.1. Capacitive Touch Header (X1)
Manufacturer: Wurth - 61301021821
Type: 2x5 pin Header Female, pitch 2.54mm
PinName1

Description

I/O Type

Voltage

I2C_SDA

I/O+3.3V

2

I2C_SCLO+3.3V

3GND4

TOUCH_INT#I+3.3V

5TOUCH_RESET#

O+3.3V

6+3.3VPWR+3.3V

7

TOUCH_SSP_CLKO+3.3V

8

TOUCH_SSP_CS

O+3.3V

9TOUCH_SSP_TX

O+3.3V

10TOUCH_SSP_RX

I+3.3VI/O Type

VoltagePullup/Pulldown

PWR

3.2. Capacitive Touch FFC Connector (X2)
Manufacturer: Omron - XF2M-1015-1A
Type: FFC Connector, 10 pins, top/bottom contact, pitch 0.5mm
PinNameDescription

1

I2C_SDA

I/O+3.3V

2

I2C_SCL

O+3.3V

3GND

4

TOUCH_INT#

5TOUCH_RESET#

6+3.3V

7Pullup/Pulldown

PWR
I+3.3V

O+3.3VPWR+3.3V

TOUCH_SSP_CLKO+3.3V

8

TOUCH_SSP_CS

O+3.3V

9TOUCH_SSP_TX

O+3.3V

10

TOUCH_SSP_RX

I+3.3V

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

4. Pin Mapping
4.1. Apalis Carrier Boards
4.1.1

Connection with Apalis Evaluation Board

Following table describes the wiring between the Capacitive Touch Adapter connector (X1) and theApalis Evaluation Board V1.0 / V1.1:
Capacitive Touch Adapter V1.0

Apalis Evaluation Board V1.0 / V1.1

X1, Pin 1: I2C_SDA

X8, Pin 40; X9, Pin A40: MXM3_209 (I2C1_SDA)

X1, Pin 2: I2C_SCL

X8, Pin 39; X9, Pin A39: MXM3_211 (I2C1_SCL)

X1, Pin 3: GND

X2/X3/X4, Pin 11: GND

X1, Pin 4: TOUCH_INT#

X2, Pin 6; X3, Pin A6: MXM3_11 (GPIO5)

X1, Pin 5: TOUCH_RESET#

X2, Pin 5; X3, Pin A5: MXM3_13 (GPIO6)

4.1.2

RemarksConnection with Ixora Carrier Board

Following table describes the wiring between the Capacitive Touch Adapter connector (X1) and theIxora Carrier Board V1.0:
Capacitive Touch Adapter V1.0

Ixora Carrier Board V1.0

X1, Pin 1: I2C_SDA

X27, Pin 5: I2C1_SDA

X1, Pin 2: I2C_SCL

X27, Pin 6: I2C1_SCL

X1, Pin 3: GND

X27, Pin 7: GND

X1, Pin 4: TOUCH_INT#

X27, Pin 17: GPIO5

X1, Pin 5: TOUCH_RESET#

X27, Pin 18: GPIO6Remarks

Capacitive Touch Adapter is not required with the Ixora carrier board V1.1 as the Capacitive Touch
Interface connector (X24) is available on the carrier board.

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

4.2. Colibri Carrier Boards
4.2.1

Connection with Colibri Evaluation Board

Following table describes the wiring between the Capacitive Touch Adapter connector (X1) and the
Colibri Evaluation Board V3.1 / V3.2:
Capacitive Touch Adapter V1.0

Colibri Evaluation Board V3.1 / V3.2

X1, Pin 1: I2C_SDA

X9, Pin 47; X8, Pin A47: SODIMM_194 (I2C_SDA)

X1, Pin 2: I2C_SCL

X9, Pin 48; X8, Pin A48: SODIMM_196 (I2C_SCL)

X1, Pin 3: GND

X7/X8/X9, Pin 3: GND

X1, Pin 4: TOUCH_INT#

X10, Pin 27; X11, Pin B27: SODIMM_28 (PWM_B)

X1, Pin 5: TOUCH_RESET#

X10, Pin 28; X11, Pin B28: SODIMM_30 (PWM_C)

4.2.2

Remarks

Connection with Iris Carrier Board

Following table describes the wiring between the Capacitive Touch Adapter connector (X1) and theIris Carrier Board V1.1:
Capacitive Touch Adapter V1.0

Iris Carrier Board V1.1

X1, Pin 1: I2C_SDA

X16, Pin 5: I2C_SDA

X1, Pin 2: I2C_SCL

X16, Pin 6: I2C_SCL

X1, Pin 3: GND

X16, Pin 7: GND

X1, Pin 4: TOUCH_INT#

X16, Pin 38: SODIMM_28 (PWM_B)

X1, Pin 5: TOUCH_RESET#

X16, Pin 39: SODIMM_30 (PWM_C)

4.2.3

Remarks

Connection with Viola Carrier Board

Following table describes the wiring between the Capacitive Touch Adapter connector (X1) and theViola Carrier Board V1.0:
Capacitive Touch Adapter V1.0

Viola Carrier Board V1.0

X1, Pin 1: I2C_SDA

X9, Pin 6: I2C_SDA

X1, Pin 2: I2C_SCL

X9, Pin 5: I2C_SCL

X1, Pin 3: GND

X9, Pin 7: GND

X1, Pin 4: TOUCH_INT#

X9, Pin 44: SODIMM_28 (PWM_B)

X1, Pin 5: TOUCH_RESET#

X9, Pin 41: SODIMM_30 (PWM_C)

Remarks

Following table describes the wiring between the Capacitive Touch Adapter connector (X1) and theViola Carrier Board V1.1/V1.2 and Viola Plus Carrier Board V1.2:
Capacitive Touch Adapter V1.0

Viola Carrier Board V1.1 / V1.2

Remarks

Viola Plus Carrier Board V1.2
X1, Pin 1: I2C_SDA

X9, Pin 6: I2C_SDA

X1, Pin 2: I2C_SCL

X9, Pin 5: I2C_SCL

X1, Pin 3: GND

X9, Pin 7: GND

X1, Pin 4: TOUCH_INT#

X9, Pin 42: SODIMM_28 (PWM_B)

X1, Pin 5: TOUCH_RESET#

X9, Pin 43: SODIMM_30 (PWM_C)

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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4.2.4

Connection with Aster Carrier Board

Capacitive Touch Adapter is not required with the Aster carrier board V1.1 as the Capacitive Touch
Interface connector (X24) is available on the carrier board.
Please note that TOUCH_INT# and TOUCH_RESET# signal are connected to SODIMM_106 andSODIMM_107 pins respectively. For more details, please refer to Aster Carrier Board V1.1
schematics.

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

5. Electrical Characteristics
5.1. Electrical Specifications
SymbolDescription

V_3.3V

Voltage+3.3

I_3.3V

MinTypMax

Unit+3.3

V

0.5

A

6. Temperature Range
6.1. Operating Temperature Range•+30 to +85 °C

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

7. Mechanical Data
7.1. Capacitive Touch Adapter Dimensions - Top Side

Fig.5 Capacitive Touch Adapter Dimensions – Top SideAll dimensions are in millimeters (mm)8. Design Data
The design data for the Toradex carrier boards and adapter boards are freely available in theAltium Designer format. The design data includes schematics, layout, and component libraries.
To download the board design data, please use the web-link below:
http://developer.toradex.com/carrier-board-design/reference-designs

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

9. Product Compliance
Up-to-date information about product compliance such as RoHS, CE, UL-94, Conflict Mineral,REACH etc. can be found on our website at: http://www.toradex.com/support/product-compliance

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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Capacitive Touch Adapter Datasheet

DISCLAIMER:Copyright © Toradex AG. All rights are reserved. The information and content in this document areprovided “as-is” with no warranties of any kind and are for informational purposes only. Data andinformation have been carefully checked and are believed to be accurate; however, no liability or
responsibility for any errors, omissions, or inaccuracies is assumed.
Brand and product names are trademarks or registered trademarks of their respective owners.
Specifications are subject to change without notice.

Toradex AG l Ebenaustrasse 10 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l support@toradex.com

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