AT42QT1011-TSHR Atmel, AT42QT1011-TSHR Datasheet - Page 2

• Manufacturer Part Number: AT42QT1011-TSHR
• Description: IC TOUCH SENSOR 1KEY SOT23-6
• Manufacturer: Atmel
• Series: QTouch™r
• Type: Capacitiver

Specifications of AT42QT1011-TSHR

• Touch Panel Interface: 1, 2-Wire
• Number Of Inputs/keys: 1 Key
• Data Interface: Serial
• Voltage Reference: Internal
• Voltage - Supply: 1.8 V ~ 5.5 V
• Current - Supply: 219µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Output Type: Logic
• Interface: Digital
• Input Type: Logic
• Supply Current: 17µA
• Supply Voltage Range: 1.8V To 5.5V
• Sensor Case Style: SOT-23
• No. Of Pins: 6
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AT42QT1011-TSHRTR

2
The AT42QT1010 and AT42QT1011 are identical apart from their behavior
when the sensor is “in detect” for an extended period.
The AT42QT1010 has a “maximum on” duration of ~ 60s. If there is an ob-
struction on the sensor, the device output will go low after the “maximum
on” detection period, so that subsequent touches can be detected.
The AT42QT1011 has no timer and the device will remain on whilst the
sensor is activate.
Speed Settings
The AT42QT1010 and AT42QT1011 have three speed settings:
n
n
n
When the device is in low power mode or when the synchronisation mode is selected, a HeartBeat™ output
is available. This provides a pulse whilst the device isn’t in detect which can be used to verify the device is
working correctly.
The device is similar to the AT42QT1010 and AT42QT1011 but it has touch-on/touch-off (toggle) functionality and a power down
timer.
Auto Off Timers
The QT1012 has a number of options for automatic power down which can be used to conserve power in situations where the
device could be left on inadvertently. There are predefined power down settings which can be used to power the device down after
15 minutes or 60 minutes. There is also the option for no power down timer so the device remains on until touched again.
AT42QT1012
AT42QT1010 and AT42QT1011
For devices where a quick response is required, a fast response setting is available with a 12.2 ms maximum response time.
It is also possible to set up the device for low power consumption, at the expense of a slower response time of up to 88.6 ms.
A third option is to synchronize the device to an external clock which makes it possible to synchronize several ICs in the same
device. This technique can be used to enhance noise immunity by syncing to a noise source such as mains. The response time
is then dependent on the external clock.
Single button or
proximity sensor
Prolonged touch
timeout after
60 seconds
AT42QT1010
Single-Key Touch Controllers
Single button or
proximity sensor
No power down, remains
active while touch present
AT42QT1011
Single button or
proximity sensor
Toggle (touch on/off)
functionality
Power down after
configurable time period
AT42QT1012