QST104 Datasheet, PDF (5/45 Pages) STMicroelectronics – Capacitive touch sensor device 4 keys with individual key state outputs or I2C interface

QST104
2
Pin description
Figure 1. 32-pin package pinout
Pin description
GPO4/KOUT4/OPT4 (HS)
GPO5/OPT5 (HS)
IRQ/OPT6 (HS)
I2C_SDA¹⁾ (HS)
I2C_SCL¹⁾ (HS)
RESET
NC
V_{DD_1}
32 31 30 29 28 27 26 25
1
24
2
23
3
22
4 _QST104KT6 21
5
20
6
19
7
18
8
17
9 10 11 12 13 14 15 16
GPO8
GPO7
GPO6
SNSK_SCK4
SNS_SCK4
SNSK_SCK3
SNS_SCK3
SNSK_SCK2
(HS) 20 mA high sink capability (on N-buffer only)
1. An external pull-up is required on these pins.
Table 2.
Pin
Device pin description
Pin name
Type ⁽¹⁾ Stand-alone mode function
I²C mode function
If unused
1
GPO4/OPT4/KOUT4 ⁽²⁾
PP (HS)
Key 4 output / BCD output 4
and MOD_0 option resistor
2 GPO5/OPT5 ⁽²⁾
PP (HS) MOD_1 option resistor
3 OPT6/IRQ ⁽²⁾
4 I2C_SDA⁽³⁾
5 I2C_SCL⁽³⁾
PP/OD
(HS)
OM_0 option resistor
TOD
(HS)
TOD
(HS)
General-purpose output 4
and I²C address bit 2
option resistor
Option
resistor
Open or
General-purpose output 5 option
resistor
Interrupt line (active low)
Open or
option
resistor
I²C serial data
Open
I²C serial clock
Open
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