ATQT600 Atmel, ATQT600 Datasheet - Page 164

• Manufacturer Part Number: ATQT600
• Description: KIT EVAL TOUCH FOR QT600
• Manufacturer: Atmel
• Series: QTouch™r

Specifications of ATQT600

• Sensor Type: Touch Screen
• Interface: USB
• Embedded: Yes, Other
• Utilized Ic / Part: ATtiny88, ATmega324PA, ATxmega128A1
• Processor To Be Evaluated: ATtiny88, ATmega324, ATxmega128
• Data Bus Width: 8 bit, 16 bit
• Interface Type: USB
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 1.6 V to 3.6 V
• Silicon Manufacturer: Atmel
• Kit Application Type: Sensor
• Application Sub Type: Touch Sensor
• Kit Contents: USB Bridge, MCU Cards, Touchpad Cards
• Svhc: No SVHC (15-Dec-2010)
• Mcu Supported Families: ATtiny88,
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Note1:
For the case of ATtiny20 devices, a ‘touch’ causes the Signal value measured on the Sensor to
increase above the Sensor Reference value (In the case of Generic Library devices, a ‘touch’
causes the Signal value to decrease below the Reference value).
However, the Negative drift rate and Positive drift rate functionality for the case of Tiny20 devices
shall be consistent with the Generic Library case.
So, it is recommended to have a ‘Slower’ Negative Drift rate (4 seconds is the default setting) and
a ‘Faster’ Positive Drift rate (1 second is the default setting) for the Tiny20 device.
6.4.6
The QTouch method IAR Example project for the Tiny20 Evaluation Kit can be found in the
following path.
\Device_Specific_Libraries\8bit_AVR\AVR_Tiny_Mega_XMega\ATtiny20\
tiny20_ek_iar_qt_example
The Example projects demonstrate the 5 button sensor configuration with a Sample LED
application. The Example projects also support QDebug data transfer to QTouch Studio – Touch
Analyzer PC Application.
It is possible to configure the number of Sensors in the Example project from 1 to 5 for testing on
the ATtiny20 Evaluation kit.
6.4.7
The code and data memory requirements for QTouch Library for ATtiny20 devices is captured in
the Table below. The Table indicates these values for the standalone library and not for the
entire Example Project application.
libtiny20-5qt-k-
0rs
libtiny20-5qt-k-
0rs
libtiny20-5qt-k-
0rs
libtiny20-5qt-k-
0rs
libtiny20-5qt-k-
0rs
164
Library
QTouch Library ATtiny20 Example projects
QTouch Library ATtiny20 code and data memory requirements
Table 19 QTouch Library for ATtiny20 Memory requirements
Number of
Sensors
5
4
3
2
1
1231 + 15 bytes
1231 + 12 bytes
Code Memory
1231 + 9 bytes
1231 + 3 bytes
1231+ 6 bytes
Const data
Const data
Const data
Const data
Const data
70
60
50
40
30
memory
Data
CStack= 0x1C bytes
RStack= 10
(16 bytes) is the
Recommended setting.
CStack= 0x1C bytes
RStack= 10
(16 bytes) is the
Recommended setting.
CStack= 0x1C bytes
RStack= 10
(16 bytes) is the
Recommended setting.
CStack= 0x1C bytes
RStack= 10
(16 bytes) is the
Recommended setting.
CStack= 0x1C bytes
RStack= 10
(16 bytes) is the
Recommended setting.
8207J-AT42-02/11
CStack/RStack