QST104 datasheet(5/45 Pages) STMICROELECTRONICS

Part #	QST104

Description	Capacitive touch sensor device 4 keys with individual key state outputs or I2C interface

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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QST104

Pin description

5/45

Pin description

An external pull-up is required on these pins.

Figure 1.

32-pin package pinout

32 31 30 29 28 27 26 25

9 1011 1213 14 15 16

I2C_SCL1) (HS)

RESET

VDD_1

GPO4/KOUT4/OPT4 (HS)

GPO5/OPT5 (HS)

IRQ/OPT6 (HS)

I2C_SDA1) (HS)

GPO8

GPO7

SNSK_SCK2

SNS_SCK3

SNS_SCK4

GPO6

SNSK_SCK4

SNSK_SCK3

QST104KT6

(HS) 20 mA high sink capability (on N-buffer only)

Table 2.

Device pin description

Pin name

Type (1)

Stand-alone mode function

I2C mode function

If unused

GPO4/OPT4/KOUT4 (2)

PP (HS)

Key 4 output / BCD output 4

and MOD_0 option resistor

General-purpose output 4

and I²C address bit 2

option resistor

Option

resistor

GPO5/OPT5 (2)

PP (HS) MOD_1 option resistor

General-purpose output 5

Open or

option

resistor

3OPT6/IRQ (2)

PP/OD

(HS)

OM_0 option resistor

Interrupt line (active low)

Open or

option

resistor

4I2C_SDA(3)

TOD

(HS)

I2C serial data

Open

5I2C_SCL(3)

TOD

(HS)

I2C serial clock

Open

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