ATQT600 Atmel, ATQT600 Datasheet - Page 114
ATQT600
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
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
ATQT600
Manufacturer:
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Quantity:
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6.3.7.3
The clock for the CAT module, CLK_CAT, is generated by the Power Manager (PM). This clock is
turned on by default, and can be enabled and disabled in the PM. The user must ensure that
CLK_CAT is enabled before initializing the QTouch Library.
QMatrix operations also require the CAT generic clock, GCLK_CAT. This generic clock is
generated by the System Control Interface (SCIF), and is shared between the CAT and the
Analog Comparator Interface. The user must ensure that the GCLK_CAT is enabled in the SCIF
before using QMatrix functionality. For proper QMatrix operation, the frequency of GCLK_CAT
must be less than one fourth the frequency of CLK_CAT.
For QMatrix operation, the Analog comparators channels are used (using the ACIFB interface)
depending on the Y Lines enabled. See Note 4 in Section 6.3.7.4.
The QMatrix method acquisition using the CAT module requires two Peripheral DMA channels
that must be provided by the application.
6.3.7.4
The above figure represents a typical 4 X 4 matrix of QMatrix sensor arrangement along with the
channel numbers. The Channel numbering starts with Channel 0 (Ch0) and increase sequentially
from Ch0 to Ch15. Similarly the Sensor numbering starts with Sensor 0. The Channel number
signifies the order in which the QTouch Library stores the acquisition data in the memory.
Note: The touch_qm_sensor_config API must follow the above Channel and Sensor numbering
when configuring the Sensors.
6.3.7.5
For the QMatrix operation, the CAT_CLK and GCLK_CAT clocks must be setup appropriately as
a first step. The QMatrix and Common configuration parameters in the touch_config_at32uc3l.h
configuration must then be set up.
114
QMatrix method hardware resource requirement for UC3L
QMatrix method Channel and Sensor numbering for UC3L
QMatrix method API Flow for UC3L
Figure 38 QMatrix channel numbering for UC3L
8207J-AT42-02/11
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