TWR-K60N512-KEIL Freescale Semiconductor, TWR-K60N512-KEIL Datasheet - Page 160

• Manufacturer Part Number: TWR-K60N512-KEIL
• Description: K60N512 Keil Tower Kit
• Manufacturer: Freescale Semiconductor
• Series: Kinetisr
• Type: MCUr

Specifications of TWR-K60N512-KEIL

• Rohs Compliant: YES
• Contents: 4 Boards, Documentation, DVD
• Peak Reflow Compatible (260 C): Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: Freescale Tower System, K60N512

TSI configuration
These features enable the following special characteristics:
17.4 TSI configuration
All use cases for the TSI module refer to using capacitive electrodes as touch sensors. For
further information on using touch sensors and HMI see application notes titled How to
Implement a Human Machine Interface Using the Touch Sensing Software Library
(document number AN3934) and Designing Touch Sensing Electrodes (document
number AN3863) at the Freescale webpage www.freescale.com/touchsensing.
There are three modes of operation that must be considered when configuring the TSI.
The three modes are used in most applications:
160
• 16 input capacitive touch sensing pins, each with individual result registers
• Automatic detection of electrode capacitance changes with programmable upper and
• TSI interrupt end of scan—Interrupt after scanning all electrodes once.
• Electrode short—Detects when electrode is shorted to V
• Conversion overrun—If the conversion time of electrodes goes above scan period.
• No external components needed, the pin can be directly connected to an electrode (a
• Single pin-per-electrode architecture.
• Operation of 16 electrodes on run modes and 1 wake-up electrode in all low power
• Automatic touch event interrupt from any of the electrodes.
• External and reference oscillator subject to the same temperature variation so
• Number of scan can be configured for faster response time or for higher resolution.
• Current sources are far more robust than external weak pull-ups used in traditional
• Continuous active mode
• Software triggered active mode
lower threshold (for each electrode).
series resistor can be used to limit the current that might flow into the pin in case of
an ESD event, but it is not necessary).
modes
calibration thresholds are compensated, no touch detection variations over
temperature range.
GPIO measurement methods.
• All enabled electrodes are scanned continuously
• Scanning period is determined by SMOD register
• Ideal for scanning once the application is in run mode
This feature will be available in the second mask of the TSI.
Kinetis Quick Reference User Guide, Rev. 0, 11/2010
NOTE
DD
or V
SS
.
Freescale Semiconductor