User Manual

9570H–AT42–02/10

AT42QT1110-MZ/AT42QT1110-AZ

1.2 Pin Descriptions

I Input only I/O Input and output

O Output only, push-pull OD Open drain output P Ground or power

Table 1-1. Pin Listing

Pin Name Type Comments If Unused, Connect To...

1 SNS0K I/O Sense Pin Leave open

2 SNS1 I/O Sense Pin Leave open

3 SNS1K I/O Sense Pin Leave open

4 Vdd P Power –

5 Vss P Supply Ground –

6 SNS2K I/O Sense Pin Leave open

7 SNS2 I/O Sense Pin Leave open

8 SNS3 I/O Sense Pin Leave open

9 SNS3K I/O Sense Pin Leave open

10 SNS4 I/O Sense Pin Leave open

11 SNS4K I/O Sense Pin Leave open

12 SNS5 I/O Sense Pin Leave open

13 SNS5K I/O Sense Pin Leave open

14 SS

I Enable SPI

Vss via 100 k resistor to enable SPI

Vdd via 100 k resistor to disable SPI

15 MOSI I SPI Data In Leave open

16 MISO O SPI Data Out Leave open

17 SCK I SPI Clock Leave open

18 Vdd P Power –

19 SNS6K I/O Sense Pin Leave open

20 SNS6 I/O Sense Pin Leave open

21 Vss P Supply Ground –

22 SNS7K/DETECT0 I/O Sense Pin/Key Status Indicator Leave open

23 SNS7/DETECT1 I/O Sense Pin/Key Status Indicator Leave open

24 SNS8/DETECT2 I/O Sense Pin / Key Status Indicator Leave open

25 SNS8K/DETECT3 I/O Sense Pin / Key Status Indicator Leave open

26 SNS9/DETECT4 I/O Sense Pin / Key Status Indicator Leave open

27 SNS9K/DETECT5 I/O Sense Pin / Key Status Indicator Leave open

28 CHANGE

OD Touch Event Indicator Leave open

29 RESET

I Reset Vdd

30 SNS10/DETECT6 I/O Sense Pin / Key Status Indicator Leave open

31 SNS10K/SYNC I/O Sense Pin / Synchronization Input Vdd or Vss via 100 k resistor

32 SNS0 I/O Sense Pin Leave open