at42qt1085 ATMEL Corporation, at42qt1085 Datasheet - Page 4

• Manufacturer Part Number: at42qt1085
• Description: Qtouch 8-key Touch Sensor Ic
• Manufacturer: ATMEL Corporation

1.3
Figure 1-1.
4
Regulated
Schematic
AT42QT1085
VDD
Typical Circuit
GPIO_10
GPIO_11
GPIO_0
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_1
1 µF
R3
R4 R5
VDD
100 nF
10
11
20
31
32
1
2
3
6
7
8
9
GPIO_0
GPIO_1
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
GPIO_0
GPIO_1
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
Pin 33 is the pad on the underside of the
device which should be connected to Vss.
QT1085
QT1085
VSS
Key_4 / GPIO_15
Key_5 / GPIO_14
Key_6 / GPIO_12
Key_7 / GPIO_12
KEY 4/GPIO 15
KEY 5/GPIO 14
KEY 6/GPIO 13
KEY 7/GPIO 12
HAPTIC PWM
HAPTIC_EN
KEY 0
KEY 2
KEY 3
KEY 1
VSS
27
28
23
24
25
26
19
22
12
13
100 nF
Rs3
Rs4
Rs5
Rs0
Rs1
Rs2
Rs6
Rs7
HAPTIC EN
HAPTIC PWM
Optional 1.2
resistor for noisy
AVdd lines
K0
K1
K2
K3
K4
K5
K6
K7
W
For haptics information refer
the Application Note
QTAN0085, Haptics Design
Guide
Regulated
AVDD
9625BSX–AT42–05/11