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QST108 Datasheet(PDF) 13 Page - STMicroelectronics

Part # QST108
Description  Capacitive touch sensor device 8 keys with individual key state outputs or I2C interface
PDF  38 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

QST108 Datasheet(HTML) 13 Page - STMicroelectronics

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QST108
Device operating modes
13/38
Figure 3.
Stand-alone mode typical schematic
Ai12560
MOD_1/KOUT5
MOD_0/KOUT4
LP/KOUT3
AKS/KOUT2
VSS_1
VSS_2
VSS_3
VSS_4
VDD_1
VDD_2
RESET
VUNREG
4.7µF
4.7µF
2.4~5.5V
Volt. Reg.
OM/KOUT6
KOUT7
KOUT8
MODE/KOUT1
VDD
Binary-
coded
Output
Mode
10nF
VDD
47k
Ω
47k
Ω
To Host
100nF
100nF
SNS_SCK1
SNSK_SCK1
Key1
RS1
10k
Ω
CS1
Keep these parts close to IC
SNS_SCK2
SNSK_SCK2
Key2
RS2
10k
Ω
CS2
SNS_SCK3
SNSK_SCK3
Key3
RS3
10k
Ω
CS3
SNS_SCK4
SNSK_SCK4
Key4
RS4
10k
Ω
CS4
SNS_SCK5
SNSK_SCK5
Key5
RS5
10k
Ω
CS5
SNS_SCK6
SNSK_SCK6
Key6
RS6
10k
Ω
CS6
SNS_SCK7
SNSK_SCK7
Key7
RS7
10k
Ω
CS7
SNS_SCK8
SNSK_SCK8
Key8
RS8
10k
Ω
CS8
1
2
3
4
5
6
8
9
101112
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1M
Ω
VDD
VSS
KOUT6
1M
Ω
VDD
VSS
KOUT5
1M
Ω
VDD
VSS
KOUT4
1M
Ω
VDD
VSS
KOUT3
1M
Ω
VDD
VSS
KOUT2
1M
Ω
VDD
KOUT1
VDD
KOUT8
KOUT7



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