Atmel SAM4S-EK2 Atmel ATSAM4S-EK2 ATSAM4S-EK2 Data Sheet

Product codes

ATSAM4S-EK2

Evaluation Kit Hardware

SAM4S-EK2 User Guide

4-13

11176A–ATARM–24-Sep-12

Figure 4-18. QST Keys

4.3.13.2 Slider

A group of channels forms a Slider. A Slider is composed of three channels for a QTouch acquisition
method using three pairs of PIOs. Such a sensor is used to detect a linear finger displacement on a sen-
sitive area. A typical implementation is volume control.

Figure 4-19. QT_Slider

4.3.14

User Buttons

There are two mechanical user buttons on the SAM4S-EK2, which are connected to PIO lines and
defined to be "left" and "right" buttons by default.

In addition, a mechanical button controls the system reset, signal NRST.

Figure 4-20. System Buttons

PC25

PC24

PC31

PC30

PC29

PC28

PC23

PC22

PC27

PC26

R53

C49
22nF

R60

R51

R57

C51
22nF

R55

C47
22nF

K1
DNP

C53
22nF

C52
22nF

22nF use X7R

S1
QTouch S lide r

PA 1

PA 3

PA 0

C4 8
22 nF

C5 0
22 nF

C4 6
22 nF

PA 2

PA 4

PA 5

R5 0

R5 4

R5 2

PB3

PC12

DGND

NRST

JP26

BP1

BP3

JP25

BP2