EVK1060A Atmel, EVK1060A Datasheet

EVK1060A

Manufacturer Part Number

EVK1060A

Description

KIT EVAL FOR AT42QT1060-MMU

Manufacturer

Atmel

Series

Quantum, QTouch™r

Datasheets

1.AT42QT1060-MMU.pdf (32 pages)

2.EVK1060A.pdf (1 pages)

3.EVK1060A.pdf (10 pages)

Specifications of EVK1060A

Sensor Type

Touch, Capacitive

Sensing Range

1 Button/Key

Interface

I²C

Sensitivity

2mm ~ 5mm Pad Widths

Voltage - Supply

Embedded

Utilized Ic / Part

AT42QT1060

Silicon Manufacturer

Atmel

Silicon Core Number

AT42QT1060-MMU

Kit Application Type

Sensing - Touch / Proximity

Application Sub Type

Capacitive Touch

Silicon Family Name

QT1060

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Using the EVK1060A:

This kit is for the evaluation and development of applications using the AT42QT1060-MMU

('QT1060') 6 Channel QTouch

working in a battery powered 'Standalone' mode, but can connected to a PC and/or User application

by simple modifications/connections to the EVK1060A Evaluation Board.

The EVK1060A is configured with 6 capacitive keys (one as a 'Guard Channel'), 6 General Purpose

Inputs/Outputs (GPIO's) as Outputs (LED 0 - 5) and the seventh GPIO as an input channel (SW1).

Please refer to the QT1060 datasheet available at

•

5029:

•

AKS Feature:

On the EVK1060A, the AKS feature is a global setting for the 6 capacitive keys.

The AKS mode is changed by moving the 2-way link fitted to J1 as indicated.

• If AKS feature set to 'On' (link on Pins 1 and 2): When touching multiple keys, only the LED

• If set to 'Off' (link on Pins 2 and 3): When touching multiple keys, multiple LEDs will be lit.

SW1:

Pressing SW1 demonstrates the QT1060's 7th GPIO as an input. LED6 will illuminate when SW1 is

pressed.

associated with the key with the strongest signal is lit. The Guard Channel (K5) is configured to

give the strongest signal (large electrode and largest sense capacitor (C5) value)

Ensure the EVK1060A Evaluation Board has 6x clear feet fitted to underside of the PCB.

Insert the CR2032 3V battery provided into the battery holder on the EVK1060A.

Ensure that the battery has the correct orientation (negative (-) side to board) or the

EVK1060A will not work.

The LEDs will illuminate in a set sequence, then extinguish.

Touch and hold the ON/OFF symbol - Power LED will illuminate indicating power to the

QT1060. Remove touch from the ON/OFF symbol.

Touch any of the 5 key(s) (Rewind (K0), Play (K1), Pause (K2), Forward (K3), Stop (K4)) on

the EV1060A and the corresponding LED(s) will illuminate. (The number of LED(s)

illuminated will depend on the Adjacent Key Suppression

If the Guard Channel (K5 which surrounds K0 - K4) is touched, then LED5 will illuminate.

Touch and hold the ON/OFF symbol - The Power LED will extinguish to indicating power to

the QT1060 has been removed. Remove touch from the ON/OFF symbol.

The EVK1060A will power off after approximately 3 minutes of inactivity.

Provides On/Off QTouch

Determines whether connected to USB port/external I2C

Sets the QT1060 through I2C: Default values except:

Address

Value

Integrated Circuit (IC). In this example, the QT1060 is shown

button, including auto power-off

Address

Value

0x3F

www.atmel.com

Address

(AKS

for full details.

) feature setting at J1)

0x3F or 0x00

Value

0x1F

Guard Channel:

K5 Electrode surrounds K0 - K4 electrodes and LED5 is driven by the 5029 to show when touch is

detected on this channel. When AKS feature is on, this channel will can be used to indicate 'non-

desired' touches (e.g. when a product is in a pocket or against an ear) and can be used to advise

the User's host chip to ignore touches on other keys.

The width of the K5 electrode varies to show the Guard Channel effect. Compare the effect of

touching at the 2mm wide area to the effect at the 5mm wide area.

External Keyboard/Electrodes:

The EVK1060A can be connected to user electrodes, using pads adjacent to R0 – R5 and cutting

the associated 6 tracks (LK4 - LK9 on the schematic).

The EVK1060A can be divided, if required, (a cutting tool is required) to separate the QT1060A

circuit from the power and 5029 circuit.

Input/Output:

The EVK2160A can be connected to User applications through I2C, using the /CHG, SCL, SDA

pads.

The Plug-In USB card, Part Number 9206, which uses Atmel’s AT90USB64 IC, can be connected to

the connector J3. PC based software is available to further evaluate the QT1060 settings.

The seven GPIO’s are available at the pads on the top edge of the EVK1060A.

Sense Capacitors/Sensitivity:

C0 - C5 can be replaced with different value X7R capacitors to change the sensitivity of each of the

channels K0 - K5 respectively. Increasing the capacitor values will increase sensitivity and

decreasing the capacitor value will decrease the sensitivity. (All flux residues should be removed

after component replacement.)

The sensitivity of all channels will increase if any pad/component connected to ground is touched.

Compare touching a key when the EVK1060A is on a desk, to when the EVK1060A is picked up

and held at the GND PAD.

Power Supply:

An external power supply can be used instead of the supplied battery, but ensure that Schottky

diodes are fitted to D1 and D2 to prevent cross powering of USB and battery sources.

It is advised to remove the battery when using an external power supply.

Touch Technology Division

1 Mitchell Point

Ensign Way, Hamble

Southampton SO31 4RF

United Kingdom

Tel: +44 (0)23 8056 5600

Fax:+44 (0)23 8045 3939

2x Sample AT42QT1060-MMU ICs

1x CR2032 Battery, 3V, 235mAh

Packed by:

3mm

1x EVK1060A Assembly

2mm

EVK1060A Kit Contents:

1x EVK1060A User Guide

4.5mm

Patented and patents pending

www.atmel.com

qprox.support@atmel.com

REV 100.0908

Dated:

5mm

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