Key Performance Characteristics
(Based on development kit DM160211)
Touch Screen Support: up to 3.5" diagonal, independent XY
tracking for 2 touches in real time
Number of Channels: dev kit channels 12 x 9, 108 nodes;
software expandable to 24 channels & 144 nodes
Response Time: <15 ms typical
Report Rate: Single Point: 65 pps, Two Points: 55 pps
Power Consumption: operating 1.5 mA typical, sleep 20 μA
Resolution: 128 bar-to-bar, scaled to 1024 x 1024
Package Size: 44-pin 8 x 8 mm QFN & TQFP
Communication: UART to USB convertor on dev kit for easy
connection to any PC
Technology: Gesture Capable, Auto adjusts for
environmental changes (baseline, calibrate, drift)
mTouch
™
Projected Capacitive
Touch-Screen Sensing Technology
Microchip Technology Incorporated
Microchip’s mTouch™ Projected Capacitive Touch-Screen
Sensing Technology and development kit provide a royalty-
free solution with GUI-based tools. This fl exible, low cost,
low power solution facilitates the design and integration of
projected capacitive touch-screen applications.
Benefi ts of mTouch Projected Capacitive
Touch-Screen Sensing Technology
■
High Flexibility
–
Easily accessible solution via royalty-free source code
license
■
Low-Cost PIC16F707 Microcontroller
– < $0.99 each in volume
■
Low Power
–
Wide operating voltage range of 1.8V-5.5V
–
Operating Current 1.5 mA at 5V typical
mTouch Projected Capacitive Development Kit
(DM160211)
The mTouch Projected
Capacitive Development
Kit includes a 3.5” sensor
mounted on a sensor board,
a projected-capacitive board
with the PIC16F707 MCU and
fully functional firmware. The
kit enablesusers to connect
sensors to up to 24 channels
without modifying the firmware.
Web Links
Touch Sensing Design Center: www.microchip.com/mtouch
Touch #1
Touch #2
Projected Capacitive
Touch Sensor
I
2
C™
(Synchronous
Serial Port)
OR
UART
(AUSART)
Capacitive
Sense Module
(CSM)
Multi-Touch
Processing
Touch Position
Interpolation
Baseline
Detection
PIC16F707 with Projected Capacitive
Royalty-Free Code
Host
CPU
