QST104 STMicroelectronics, QST104 Datasheet - Page 6

• Manufacturer Part Number: QST104
• Description: Capacitive touch sensor device 4 keys
• Manufacturer: STMicroelectronics

Pin description
Table 2.
1. S: supply pin, BD: bidirectional pin, SNS: capacitive sensing pin, PP: Output push-pull, OD: Output open-drain,
2. During the reset phase, these pins are floating and the state depends on the option resistor.
3. An external pull-up is required on these pins.
6/45
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
6
7
8
9
TOD: Output true open-drain and HS: 20mA high sink (on N-buffer only)
RESET
NC
V
V
V
V
V
V
SNS_SCK1
SNSK_SCK1
SNS_SCK2
SNSK_SCK2
SNS_SCK3
SNSK_SCK3
SNS_SCK4
SNSK_SCK4
GPO6
GPO7
GPO8
GPO9
GPO10
GPO11
GPO12
GPO13
GPO1/OPT1/KOUT1
GPO2/OPT2/KOUT2
GPO3/OPT3/KOUT3
DD_1
SS_1
SS_2
SS_3
SS_4
DD_2
Device pin description (continued)
Pin name
(2)
(2)
(2)
PP (HS)
PP (HS)
PP (HS)
Type
SNS
SNS
SNS
SNS
SNS
SNS
SNS
SNS
BD
PP
PP
PP
PP
PP
PP
PP
PP
S
S
S
S
S
S
(1)
Reset (active low)
Not connected
Supply voltage
Ground voltage
Ground voltage
Ground voltage
Ground voltage
Supply voltage
Key 1 sense pin to Cs
Key 1 sense pin to Cs/Rs
Key 2 sense pin to Cs
Key 2 sense pin to Cs/Rs
Key 3 sense pin to Cs
Key 3 sense pin to Cs/Rs
Key 4 sense pin to Cs
Key 4 sense pin to Cs/Rs
General-purpose output 6
General-purpose output 7
General-purpose output 8
General-purpose output 9
General-purpose output 10
General-purpose output 11
General-purpose output 12
General-purpose output 13
Key 1 output / BCD output 1
and MODE option resistor
Key 2 output / BCD output 2
and AKS option resistor
Key 3 output / BCD output 3
and LP option resistor
Stand-alone mode function
General-purpose output 1
and MODE option resistor
General-purpose output 2
and I
option resistor
General-purpose output 3
and I
option resistor
I
2
2
2
C mode function
C address bit 0
C address bit 1
www.DataSheet4U.com
10nF
capacitor to
ground
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Option
resistor
Option
resistor
Option
resistor
If unused
QST104