QST608 ST Microelectronics, QST608 Datasheet - Page 12

• Manufacturer Part Number: QST608
• Description: Capacitive touch sensor device
• Manufacturer: ST Microelectronics

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Device operating mode
Note:
12/44
1
Figure 3.
If you decide to use a rotor with a center dome button, Key 5 must be used.
See Note 1
Pos. 0
Key5
Key4
Key3
Key2
Key1
V
UNREG
Typical application schematic
Keep these parts close to IC
R
R
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
R
R
R
R
SR3
SR2
S4
S3
S2
S1
4.7µF
2.4 to 5.5V
Volt. Reg.
C
R
C
10kΩ
C
C
C
C
C
SR3
SR1
C
SR2
S5
S4
S3
S2
S1
SR1
21
20
29
28
27
26
25
24
23
22
19
18
15
14
17
16
4.7µF
SNSK_SCK5
SNS_SCK5
SNSK_SCK4
SNS_SCK4
SNSK_SCK3
SNS_SCK3
SNSK_SCK2
SNS_SCK2
SNSK_SCK1
SNS_SCK1
SNSKC_MCK1
SNSC_MCK1
SNSKA_MCK1
SNSA_MCK1
SNSKB_MCK1
SNSB_MCK1
V
SS_1
9
100nF
V
V
DD_1
SS_2
8
10
V
V
V
ADD2/GPO3
ADD1/GPO2
ADD0/GPO1
DD_2
SS_3
DD
13
11
100nF
I2C_SDA
I2C_SCL
RESET
GPO5
GPO4
V
SS_4
IRQ
12
2
32
31
30
1
5
4
3
6
1MΩ
1MΩ
1MΩ
V
DD
10 nF
GPO5
GPO3
V
V
GPO2
V
V
GPO1
V
V
To Host
GPO4
Ai12575
DD
SS
DD
SS
DD
SS
QST608