ATEVK1012A

ATEVK1012A Datasheet

This kit is designed for the evaluation and development of applications using the AT42QT1012-TSHR 'QT1012' Integrated Circuit IC .

Part	Datasheet
ATEVK1012A	ATEVK1012A (pdf)

PDF Datasheet Preview
Using the EVK1012A: This kit is designed for the evaluation and development of applications using the AT42QT1012-TSHR 'QT1012' Integrated Circuit IC . Default/shipped setting User-set Auto-Off Delay set to infinite J2 Pin1&2 connected by link , Active High Output. Please visit for details of this and similar products, which includes links to relevant product datasheets. Insert the battery provided into the battery holder on the EVK1012A board. Ensure that the battery has the correct orientation negative - side to board or the EVK1012A will not work. Touch KEY and the LED will light. Release Touch. Touch KEY and the LED will switch off. If a non-infinite Auto-Off Delay is set and reached actual time is dependent on Voltage level, Rt and Ct tolerances , the LED will switch off. The LED will light when KEY is touched if the QT1012 is set to Active High Output. If QT1012 is changed to give Active Low Output, then the LED will light until KEY touched. An external power supply can be used instead of a battery. WARNING if an external power supply is used then the battery MUST be removed. Schematic: Configuring the EVK1012A: The Auto-Off Delay stated times ~+/10% and Output Polarity can be set using the table below Remove and refit the battery/power supply when changing Jumper position Jumper Position Pins 1-2 J1 * 60 Minutes Infinite User Rt,Ct 15 Minutes Auto-Off Delay 60 Minutes 15 Minutes User Rt,Ct Infinite 24 Hours Infinite User Rt,Ct 6 Hours 24 Hours 6 Hours User Rt,Ct Infinite Multiplier LK1 x1 VSS x1 VSS x24 VDD Output LK2 Active High VSS Active Low VDD Active High VSS * Remove Rt when Jumper is in J1, J2 or J4 positions. x24 VDD Active Low VDD A User electrode can be connected to the QT1012 using EXT and GND pads The value of Cs may require changing. Large pads either side of Cs are available for fitting leaded capacitors in parallel . The EVK1012A can also connect to a User output using OUT and GND pads . The Auto-Off Delay can be extended or the QT1012 output can be switched off immediately by pulsing the voltage on the delay multiplier resistor RM through J5. Refer to QT1012 Datasheet for further details User-Programmed Auto-Off Delay: By changing the values of Rt and Ct, the Auto-Off Delay can be changed. Possible Rt and Ct combinations are available using the formula:

PDF Datasheet Preview

Using the EVK1012A:

This kit is designed for the evaluation and development of applications using the AT42QT1012-TSHR 'QT1012' Integrated Circuit IC .

Default/shipped setting User-set Auto-Off Delay set to infinite J2 Pin1&2 connected by link , Active High Output.

Please visit for details of this and similar products, which includes links to relevant product datasheets.

Insert the battery provided into the battery holder on the EVK1012A board.

Ensure that the battery has the correct orientation negative - side to board
or the EVK1012A will not work.

Touch KEY and the LED will light. Release Touch.

Touch KEY and the LED will switch off.

If a non-infinite Auto-Off Delay is set and reached actual time is dependent on Voltage level, Rt and Ct tolerances , the LED will switch off.

The LED will light when KEY is touched if the QT1012 is set to Active High Output. If QT1012 is changed to give Active Low Output, then the LED will light until KEY touched.

An external power supply can be used instead of a battery.

WARNING if an external power supply is used then the battery MUST be removed.

Schematic:

Configuring the EVK1012A:

The Auto-Off Delay stated times ~+/10% and Output Polarity can be set using the table below Remove and refit the battery/power supply when changing Jumper position

Jumper Position Pins 1-2 J1 *
60 Minutes Infinite

User Rt,Ct 15 Minutes

Auto-Off Delay
60 Minutes 15 Minutes User Rt,Ct

Infinite
24 Hours Infinite

User Rt,Ct 6 Hours
24 Hours 6 Hours User Rt,Ct Infinite

Multiplier LK1
x1 VSS
x1 VSS
x24 VDD

Output LK2

Active High VSS

Active Low VDD

Active High VSS
* Remove Rt when Jumper is in J1, J2 or J4 positions.
x24 VDD

Active Low VDD

A User electrode can be connected to the QT1012 using EXT and GND pads The value of Cs may require changing. Large pads either side of Cs are available for fitting leaded capacitors in parallel .

The EVK1012A can also connect to a User output using OUT and GND pads .

The Auto-Off Delay can be extended or the QT1012 output can be switched off immediately by pulsing the voltage on the delay multiplier resistor RM through J5. Refer to QT1012 Datasheet for further details

User-Programmed Auto-Off Delay:

By changing the values of Rt and Ct, the Auto-Off Delay can be changed. Possible Rt and Ct combinations are available using the formula:

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ATEVK1012A Datasheet file may be downloaded here without warranties.

Datasheet ID: ATEVK1012A 519345