QST102 STMicroelectronics, QST102 Datasheet - Page 5

• Manufacturer Part Number: QST102
• Description: Capacitive Touch Sensor Device 2 Keys With Individual Key State Outputs
• Manufacturer: STMicroelectronics

QST102
2
Pin description
Figure 1.
Table 2.
1. S: supply pin, PP: Output push-pull pin and SNS: Capacitive sensing pin
2. To ensure correct reset of device, a 1nF capacitor must be connected to this pin. During reset phase, this
3. During the reset phase, this pin is floating and its state depends on the option resistor.
Pin
no.
(HS) 20 mA high sink capability (on N-buffer only)
1
2
3
4
5
6
7
8
pin must not be driven.
VDD
SNSK_SCK2
SNS_SCK2
KOUT2/SVI_CLK
KOUT1/AKS/SVI_DATA
SNS_SCK1/SVI0
SNSK_SCK1/SVI1
VSS
8-pin VFQFPN8 (DFN8) package pinout
Device pin description
Pin name
SVI_CLK/KOUT2
SNSK_SCK2
SNS_SCK2
(2)
VDD
(3)
5
1
2
3
4
Type
SNS
SNS
SNS
SNS
PP
PP
S
S
QST102AU6
(1)
Ground voltage
Supply voltage
Key 2 sense pin to C
Key 2 sense pin to C
Key 2 output and Serial Validation
Interface clock output
Key 1 output, AKS option resistor
and Serial Validation Interface
data output
Key 1 sense pin to C
Validation Interface input 0
Key 1 sense pin to C
Serial Validation Interface input 1
(HS) 5
8
7
6
Function
VSS
SNSK_SCK1/SVI1
SNS_SCK1/SVI0
KOUT1/AKS/SVI_DATA
S
S
S
S
/R
/R
and Serial
S
S
and
Pin description
Open
Open
1nF capacitor
Option resistor
Open
Open
If unused
5/29