DM183026 Microchip Technology, DM183026 Datasheet - Page 21

• Manufacturer Part Number: DM183026
• Description: KIT EVALUATION PIC16F/PIC24F
• Manufacturer: Microchip Technology
• Series: mTouch™r

Specifications of DM183026

• Sensor Type: Touch, Capacitive
• Embedded: Yes, Other
• Utilized Ic / Part: PIC16F727, PIC24FJ128GB106
• Processor To Be Evaluated: PIC16F, PIC24F
• Interface Type: USB
• Silicon Manufacturer: Microchip
• Kit Application Type: Sensing - Touch / Proximity
• Application Sub Type: Capacitive Touch
• Kit Contents: 6x Brds, Analyser, Cable, CD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Interface: -
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2009 Microchip Technology Inc.
3.2.2
The larger window is used to display the status of the individual sensors or channels
for the hardware and subsystem selected in the Board window. When the application
is configured for the CAP TOUCH – CTMU Evaluation Board, the Diagnostic Tool
window changes, as shown in Figure 3-3. Depending on the sensor area selected, the
board shows status displays corresponding to the number of sensor channels used for
that area.
The status display for each of the sensors takes the form of a bar graph. Above each bar
graph display is an indicator; this lights up (changes from dark green to light green) when
the software detects a touch event. The bar graph shows the sensor’s current state in
terms of the A/D conversion value of its channel. Values shown may be in the range of
0 to 65,535 and are dimensionless.
Each bar graph has the following information:
• A constantly moving vertical bar that indicates the instantaneous conversion value
• An orange horizontal indicator across the bar that indicates the moving average of
• A dark blue horizontal indicator showing the hysteresis value for the touch sensor
• A light green horizontal indicator that shows the trip level that the touch channel
• The average and raw conversion values, displayed numerically at the bottom of
A color key for the indicators is provided at the top of the Diagnostic Tool window.
The A/D converter produces values of up to 1023 (10 bits). The CAP TOUCH –
CTMU Evaluation Board contains software algorithms that use scaled values of the raw
A/D reading to improve averaging and overall performance of the hardware.
3.2.2.1
In the Diagnostic Tool window, certain global settings can be changed for all sensors,
and the way the evaluation board and the diagnostic software interact. These features
are available through the Settings dialog box, which opens when Settings in the
mTouch Sensing Solution Diagnostic Tool window is selected (Figure 3-3).
the touch sensor
(the level the sensor must return to after an active or pressed level to change
state to inactive or unpressed)
must reach to become pressed or activated
the bar graph
The Diagnostic Tool Window
GLOBAL DIAGNOSTIC WINDOW SETTINGS
Using the mTouch™ Sensing Solution
DS41385A-page 17