LC717A00ARGEVK - ON Semiconductor

September, 2014 − Rev. 4 1Publication Order Number:

EVBUM2149/D

LC717A00ARGEVK

Capacitance‐Digital‐Converter

IC for Electrostatic Capacitive

Touch Sensors Evaluation

Board User's Manual

Introduction

This manual contains configuration, usage, setup guide

(page 1), and main specifications regarding Capacitance

touch sensor Evaluation board kit (LC717A00ARGEVK).

For the latest edition of this manual, please refer to

ON Semiconductor homepage.

Product Outline

This kit includes four (4) different Evaluation boards that

can evaluate Capacitance touch sensor operation in various

switch patterns and Communication tools to make register

setting changes on PC.

•Capacitance Touch Sensor Evaluation Board

“LC717A00AR01GEVB”

•Capacitance Touch Sensor Evaluation Board

“LC717A00AR02GEVB”

•Capacitance Touch Sensor Evaluation Board

“LC717A00AR03GEVB”

•Capacitance Touch Sensor Conversion Module

“LC717A00ARGPGEVB”

•Multi-functional USB−I2C Conversion Module

“MM−FT232H”

•USB Cable

SETUP GUIDE

Thank you for purchasing our “LC717A00ARGEVK”,

the Capacitance touch sensor Evaluation board.

Necessary Operational Environment

Following operational environment is necessary in order

to use “LC717A00AR Software”, the Touch sensor

Evaluation board application.

•Correspondence OS: Windows®XP (32 bit),

Windows®7 (32 bit)

•Memory Capacity: More than 16 MB

•Hard Disc Capacity: Amount of Space ³ More than

500 kB (Application Size). Need Additional Size

(Optional) for Obtaining Log File.

•Interface: USB2.0

Setup

1. Download the “D2XX drivers” from the corporate

home page of FTDI (http://www.ftdichip.com).

2. Decompress the zipped file.

3. Connect the “MM−FT232H” and the PC with USB

Cable.

4. Install “D2XX drivers” for “MM−FT232H”. Once

the installation is done, disconnect

“MM−FT232H” from PC.

5. Connect the “MM−FT232H” and the Touch sensor

Evaluation board (LC717A00AR01GEVB or

LC717A00AR02GEVB). Next, connect the

“MM−FT232H” and the PC with USB Cable.

6. Install “LC717A00AR software” to PC.

“LC717A00AR software” is available for

download from the ON Semiconductor website at

www.onsemi.com. Please search part number

LC717A00ARGEVK and look under the software

section. After installing software folder please

double-click on “LC717A00App.exe” to start

program.

Connecting Multifunctional USB Conversion Module

Where appropriate, please connect Capacitance touch

sensor Evaluation board and Multifunctional USB

conversion module as shown in the Figure 2.

When connecting Multifunctional USB conversion

module, make sure to have USB cable unplugged. When

unplugging Multifunctional USB conversion module,

please unplug USB cable before the module.

Use of AC Adapter

Please use 5 V AC adapter when using

LC717A00AR01GEVB without connecting to PC.

NOTES: Please take extra care for polarity – Using wrong polarity

may cause IC damage.

Some AC adapter with large anti-ground noise may not

be used.

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EVAL BOARD USER’S MANUAL

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Usage Advisory

•When using AC adapter, please switch the jumper of

LC717A00AR01GEVB to AC adapter side.

•If error is displayed when starting “LC717A00AR

Software”, please check the following:

♦Please make sure that Device driver is operating

correctly:

If “!” is shown at “USB Serial Port” in Windows’

“Device manager”, Device driver is not operating

correctly. In such a case, disconnect the device from

PC and reconnect it again. If “!” still shows up on

the screen after disconnecting so many times, please

reinstall the Device driver.

EVALUATION BOARDS

LC717A00AR01GEVB Evaluation Board

This Evaluation board has 4×2 switch pattern with an

LED in the center. Acrylic board is mounted on the board

with a space of approx. 1.5 mm. When the user touches the

Green light, which is lit under this acrylic board, the color

will change to Red.

Configuration

1. Connector for Multifunctional USB−I2C

Conversion module:

This is used to connect Multifunctional USB−I2C

conversion module “MM−FT232H”. By using this

module, user can connect the Evaluation board and

PC. By connecting this Evaluation board to PC

and activating Touch sensor evaluation application

“LC717A00AR Software” on PC, user can change

the parameter of touch sensor LSI, or can monitor

an operation condition. Also, power will be

supplied from this connector.

2. Power source switching jumper:

This is used to set a supplier of the power source.

If this is set on “PC” side, power is supplied from

Multifunctional USB conversion module. If this is

set on “AC ADAPTER” side, power is supplied

from DC jack.

3. DC Jack:

This is used to connect AC adopter (+5 V).

(Note: Using wrong polarity will damage this jack)

4. RESET switch:

This is used to RESET Capacitance touch sensor

LSI. Use this switch when Error LED is lit or if

any abnormality is found during operation.

5. Error LED:

This will light up when error is occurring in

Capacitance touch sensor LSI. When this LED is

lit, press RESET switch to release the error.

6. Capacitance touch sensor LSI:

Please do not touch this during operation – It may

cause malfunction or breakdown.

7. Touch switch area:

An area where Touch switch is located. Touch

switch is Green at power ON. When the user

touches the Green light, Touch sensor will react

and change the color to Red.

Figure 1. Configuration of LC717A00AR01GEVB

DC Jack

Touch Switch Area

Power Source Switching Jumper

Connector for Multifunctional

USB Conversion Module

RESET Switch

Error LED

Capacitance Touch Sensor LSI

(LC717A00AR)

LC717A00ARGEVK

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How to Use

1. When receiving power from PC, set Power

switching jumper to “PC” side and connect

“MM−FT232H” to the connector for

Multifunctional USB conversion module (See

Figure 2). If receiving power from optional AC

adapter, set the jumper to “AC ADAPTER” side

and connect AD adapter to DC jack.

2. Press RESET switch.

3. Red LED will light up by touching Green LED

light (See Figure 3).

4. Press RESET switch in case of error LED light up

or when Evaluation board is acting strange.

5. Please note: If the user directly touches the IC on

the Evaluation board or patterns with their finger,

it may cause malfunction or breakdown.

Figure 2. MM−FT232H Connection Figure 3. Red Turns On by Touching Green Light

Evaluation Board

LC717A00AR01GEVB

MM−FT232H

Pin 7:

Unconnected

Pin 1:

Connect this

with VDD Pin

CAUTION: When supplying power from Multifunctional conversion module while having Power switch jumper on “AC ADAPTER” side, Green

LED will slightly light up. This is because the current flows via I2C signal line and Pull-up resistor. PLEASE DO NOT USE IN THIS

CONDITION – It may cause equipment failure.

Also, please DO NOT supply power from both AD adapter and Multifunctional USB conversion module while having Power switch

jumper on “AC ADAPTER” side – This may also cause equipment failure.

LC717A00AR02GEVB Evaluation Board

This Evaluation board has 8×1 switch pattern with an

acrylic board placed on top of it. Touching the acrylic board

will turn Red LED light on.

Configuration

1. Connector for Multifunctional USB−I2C

conversion module:

A connector to connect “MM−FT232H”. By

connecting this module, user can connect this

Evaluation board with PC. By connecting this

board to PC and activating Touch sensor

Evaluation application “LC717A00AR software”

on PC, user can change the parameter of touch

sensor LSI, or can monitor an operation condition.

Also, power will be supplied from this connector.

2. RESET switch:

This is used to RESET Capacitance touch sensor

LSI. Press this when error LED is lit or any

abnormality is found during operation.

3. Error LED:

This will light up when error is occurring in

Capacitance touch sensor LSI. When this LED is

lit, press RESET switch to release an error.

4. Capacitance Touch sensor LSI:

Please do not touch this during operation – It may

cause malfunction or breakdown.

5. Touch Switch Area:

An area where Touch switch is located. Touch

switch is Green at power ON. When the user

touches the Green light, touch sensor will react

and the color changes to Red.

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How to Use

1. Connect “MM−FT232H” (See Figure 2).

2. Press RESET switch.

3. Red LED will light up by touching silk prints on

the board.

4. Press RESET switch if error LED is lit or when

Evaluation board is operating strange.

5. Please note: If the user directly touches the IC on

the Evaluation board or patterns with their finger,

it may cause malfunction or breakdown.

Figure 4. Configuration of LC717A00AR02GEVB

Touch Switch Area

Connector for

MM−FT232H

RESET Switch

Error LED

Capacitance Touch Sensor

LED

LC717A00AR03GEVB Evaluation Board

This Evaluation board has 4×2 switch pattern with an

acrylic board placed on back side of the board. Red LED will

light up by touching silk print area (SW1 ~ SW8) of the

Touch switch.

Configuration

1. Pin for Multi-functional USB conversion module:

This is a pin to solder Pin header of 2.54 mm pitch

and connect “MM−FT232H”. By connecting this

module, parameter change of Touch sensor LSI

and the operation condition can be monitored by

using Touch sensor evaluation application

“LC717A00AR Software” on PC.

2. USB Connector:

This is used for PC connection. This connector

does power delivery only and PC does not identify

this connector as USB device. In case of using

“LC717A00AR Software”, please use pins for

“MM−FT232H”.

3. Error LED:

This will light up when error is occurring in

Capacitance touch sensor LSI. When this LED is

lit, unplug Evaluation board from PC and plug

back again.

4. Capacitance Touch sensor LSI:

Please do not touch this during operation – It may

cause malfunction or breakdown.

5. Touch Switch Area, LED:

An area where Touch switch is located. Red LED

will light up by touching silk print area

(SW1 ~ SW8) of the Touch switch.

How to Use

1. Connect USB connector of the Evaluation board to

USB connector of the PC.

2. Red LED light will light up by touching silk print

on the board.

3. When error LED is on or having strange

Evaluation board operation, unplug the Evaluation

board from PC, and plug back again.

4. Please note: If the user directly touches the IC on

the Evaluation board or patterns with their finger,

it may cause malfunction or breakdown.

LC717A00ARGEVK

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Figure 5. Configuration of LC717A00AR03GEVB

LED

Touch Switch Area

Pin for

MM−FT232H

USB Connector

Error LED

Capacitance Touch Sensor

LC717A00ARGPGEVB Conversion Module

This is a sensor module with Capacitance touch sensor

LSI “LC717A00AR” on DIP IC form of board that has

28 pins with 600 mil width. This is used to evaluate

self-produced switch patterns.

Figure 6. LC717A00ARGPGEVB

Reset Switch

Capacitance Touch Sensor

Power LED

Please refer to Detail Description of

LC717A00ARGPGEVB section for more detail.

MM−FT232H Multifunctional USB−I2C Conversion

Module

This is a module for USB Interface and I2Ct Interface

conversion. This is used when connecting each Evaluation

board and PC. When connecting to the Evaluation board,

please set I/O switching jumper on 5 V side.

Figure 7. Configuration of MM−FT232H

I/O Power Switching Jumper

USB Connector

Connector for

Evaluation Board

Connection

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MAIN SPECIFICATIONS

Main specifications of each device are as listed below:

Table 1. MAIN SPECIFICATIONS OF LC717A00AR01GEVB

Parameter Conditions Remarks

Board Size 155 ×115 (mm)

Board Material Glass Epoxy (FR4) Copper Foil 35 mm, Thickness 1.6 mm, Double-sided Board

Supply Voltage 5V Provided from either DC Jack or MM−FT232H

Capacitance Touch Sensor LC717A00AR

External RESET Circuit With Manual REWSET Switch

Switch Pattern 4×2 Configuration

Connector 6 Pins ×1 Row, DC Jack

Table 2. MAIN SPECIFICATIONS OF LC717A00AR02GEVB

Parameter Conditions Remarks

Board Size 127 ×28.5 (mm)

Board Material Glass Epoxy (FR4) Copper Foil 35 mm, Thickness 1.6 mm, Double-sided Board

Supply Voltage 5V Provided from MM−FT232H

Capacitance Touch Sensor LC717A00AR

External RESET Circuit With Manual REWSET Switch

Switch Pattern 8×1 Configuration

Connector 6 Pins ×1 Row

Table 3. MAIN SPECIFICATIONS OF LC717A00AR03GEVB

Parameter Conditions Remarks

Board Size 29 ×69 (mm)

Board Material Glass Epoxy (FR4) Copper Foil 35 mm, Thickness 1.6 mm, Double-sided Board

Supply Voltage 5V Provided from USB Connector

Capacitance Touch Sensor LC717A00AR

External RESET Circuit N/A

Switch Pattern 4×2 Configuration

Connector USB A Type

Table 4. MAIN SPECIFICATIONS OF LC717A00ARGPGEVB

Parameter Conditions Remarks

Board Size 17.78 ×35.56 (mm)

Board Material Glass Composite (CEM3) Copper Foil 35 mm, Thickness 1.6 mm, Double-sided Board

Supply Voltage 2.6 to 5.5 V

Capacitance Touch Sensor LC717A00AR

External RESET Circuit With Manual REWSET Switch

Switch Pattern 4×2 Configuration

Connector Connector 600 mil Width 28 Pins

DIP Type

LC717A00ARGEVK

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CIRCUIT DIAGRAMS

Figure 8. LC717A00AR01GEVB

Unpopulated

LC717A00ARGEVK

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Figure 9. LC717A00AR02GEVB

Unpopulated

LC717A00ARGEVK

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Figure 10. LC717A00AR03GEVBFigure 11. LC717A00AR03GEVB

LC717A00ARGEVK

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Figure 12. LC717A00ARGPGEVB

LC717A00ARGEVK

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DETAIL DESCRIPTION OF LC717A00ARGPGEVB

Configuration

Figure 13. Configuration of LC717A00ARGPGEVB

Touch Sensor LSI (LC717A00AR)

Power LED

RESET Switch

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Table 5. SIGNAL PIN FUNCTIONS

No Name I/O Functions

1 Pout7 Output Cin0 Evaluation Result Output

2 Pout6 Output Cin1 Evaluation Result Output

3 Pout5 Output Cin2 Evaluation Result Output

4 Pout4 Output Cin3 Evaluation Result Output

5 Pout3 Output Cin4 Evaluation Result Output

6 Pout2 Output Cin5 Evaluation Result Output

7 Pout1 Output Cin6 Evaluation Result Output

8 Pout0 Output Cin7 Evaluation Result Output

9 ERROR Output ERROR State Output

10 Cref Input Reference Capacity Input Pin

11 Cdrv Output Output for Capacitive Sensor Drive

12 INTOUT Output Interruption Output

13 GAIN Input Pin for Gain Initial Value Selection (JP1 Initialization : H Level = ×14)

14 GND − GND (EARTH)

15 Vdd − Power Source

16 SCL/SCK Input Clock Input (I2C)/Clock Input (SPI) (2.2 kW Pull-up)

17 SDA/SI I/O Data I/O (I2C)/Data Input (SPI) (2.2 kW Pull-up)

18 SA/SO I/O Slave Address Selection (I2C)/Data Output (SPI) (JP2 Initialization : L Level)

19 CS Input Interface Selection/Chip Select Inverting Input (SPI)

20 RESET Input External RESET Signal Inverting Input (2.2 kW Pull-up, with Switch)

21 Cin0 I/O Capacitive Sensor Input

22 Cin1 I/O Capacitive Sensor Input

23 Cin2 I/O Capacitive Sensor Input

24 Cin3 I/O Capacitive Sensor Input

25 Cin4 I/O Capacitive Sensor Input

26 Cin5 I/O Capacitive Sensor Input

27 Cin6 I/O Capacitive Sensor Input

28 Cin7 I/O Capacitive Sensor Input

*For evaluation result output of Pout0~7; Evaluation result (ON/OFF) after removing Capacitive sensor input’s chattering will come out.

Capacitive sensor’s measurement will become readable by connecting I2C compatible bus or SPI.

Table 6. JUMPER, PATTERN FOR ADDITIONAL PARTS

Pattern Parameter Set Contents

JP1 Initial Gain Setting H Level (1-2 Short) = High-sensitivity (×14) *: Initial Setting: H Level

L Level (2-3 Short) = Low-sensitivity (×7)

JP2 Slave Address Selection (I2C)

Data Output (SPI)

When Interface is Selected as I2C Compatible Bus by CS Pin;

H Level (2-3 Short) = 0x16 (7 Bits)

L Level (1-2 Short) = 0x17 (7 Bits) *: Initial Setting: L Level

C3 Pattern for Cref Capacity

Adjustment Implement Capacitor of any Capacity as Needed (Size: 1608)

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PRECAUTION FOR USE

1. For more information on the Touch Sensor or how

to design a custom switch pattern:

Please refer to the Application and Design Note on

the ON Semiconductor homepage.

2. Auto OFF Function:

As a fail safe the LSI has an initial setting to turn

OFF outputs if switch is held for a long period of

time. Output will turn OFF after holding a switch

for 10 seconds. By using Switch ON Count

Lower/Higher Register in I2C compatible bus or

SPI connection, the time to set OFF will be

adjustable.

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