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QST104 데이터시트(PDF) 13 Page - STMicroelectronics

부품명 QST104
상세설명  Capacitive touch sensor device 4 keys with individual key state outputs or I2C interface
PDF  45 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
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QST104 데이터시트(HTML) 13 Page - STMicroelectronics

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QST104
Device operating modes
13/45
4.5.2
KOUT outputs
KOUTn outputs directly reflect the state of keys. These pins are push-pull outputs. Under
RESET, these pins are floating and their state depends on the option resistors. Pins KOUTn
are active high meaning that when a key is “touched”, the corresponding KOUT pin outputs
a ‘1’.
Figure 3.
Stand-alone mode typical schematic
Ai12572
MOD_1
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
MODE/KOUT1
Binary-
coded
Output
Mode
10nF
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
1
2
3
6
8
9
101112
13
14
15
16
17
18
19
20
21
30
31
32
1M
Ω
VDD
VSS
1M
Ω
VDD
VSS
KOUT4
1M
Ω
VDD
VSS
KOUT3
1M
Ω
VDD
VSS
KOUT2
1M
Ω
VDD
KOUT1
VDD
1M
Ω
VDD
VSS



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