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QST508AB1 Fiches technique(PDF) 7 Page - STMicroelectronics

No de pièce QST508AB1
Description  Capacitive touch sensor device 8 keys with individual key state outputs or I2C interface
PDF  51 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

QST508AB1 Fiches technique(HTML) 7 Page - STMicroelectronics

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QST108
Pin description
7/51
6
RESET
BD
Reset (active low)
10nF
capacitor to
ground
7
NC
Not connected
8VDD_1
S
Supply voltage
9VSS_1
S
Ground voltage
10
VSS_2
S
Ground voltage
11
VSS_3
S
Ground voltage
12
VSS_4
S
Ground voltage
13
VDD_2
S
Supply voltage
14
SNS_SCK1
SNS
Key 1 sense pin to Cs
Open
15
SNSK_SCK1
SNS
Key 1 sense pin to Cs/Rs
Open
16
SNS_SCK2
SNS
Key 2 sense pin to Cs
Open
17
SNSK_SCK2
SNS
Key 2 sense pin to Cs/Rs
Open
18
SNS_SCK3
SNS
Key 3 sense pin to Cs
Open
19
SNSK_SCK3
SNS
Key 3 sense pin to Cs/Rs
Open
20
SNS_SCK4
SNS
Key 4 sense pin to Cs
Open
21
SNSK_SCK4
SNS
Key 4 sense pin to Cs/Rs
Open
22
SNS_SCK5
SNS
Key 5 sense pin to Cs
Open
23
SNSK_SCK5
SNS
Key 5 sense pin to Cs/Rs
Open
24
SNS_SCK6
SNS
Key 6 sense pin to Cs
Open
25
SNSK_SCK6
SNS
Key 6 sense pin to Cs/Rs
Open
26
SNS_SCK7
SNS
Key 7 sense pin to Cs
Open
27
SNSK_SCK7
SNS
Key 7 sense pin to Cs/Rs
Open
28
SNS_SCK8
SNS
Key 8 sense pin to Cs
Open
29
SNSK_SCK8
SNS
Key 8 sense pin to Cs/Rs
Open
30
GPO1/OPT1/KOUT1 (2)
PP (HS)
Key 1 output / BCD output 1
and MODE option resistor
General purpose output 1
and MODE option resistor
Option
resistor
31
GPO2/OPT2/KOUT2 (2)
PP (HS)
Key 2 output / BCD output 2
and AKS option resistor
General purpose output 2
and I2C address bit 0
option resistor
Option
resistor
32
GPO3/OPT3/KOUT3 (2)
PP (HS)
Key 3 output / BCD output 3
and LP option resistor
General purpose output 3
and I2C address bit 1
option resistor
Option
resistor
1.
S: supply pin, BD: bidirectional pin, SNS: capacitive sensing pin, PP: Output push-pull, OD: Output open-drain,
TOD: Output true open-drain and HS: 20mA high sink capability (on N-buffer only)
2.
During the reset phase, these pins are floating and their state depends on the option resistor.
3.
An external pull-up is required on these pins.
Table 2.
Device pin description (continued)
Pin
Pin name
Type (1)
Stand-alone mode function
I2C mode function
If unused



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