AT42QT2100_14 datasheet(4/44 Pages) ATMEL

Part #	AT42QT2100

Description	QTouch Touch Sensor IC

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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4

AT42QT2100 [DATASHEET]

9554E–AT42–01/13

I/O

CMOS input/output

I

CMOS input only

OD

CMOS open drain output (pull-up to Vdd)

OF

CMOS output that can float during Reset, Sleep or LP modes

P

Ground or power

13

SNSB7 (1)

I/O

Sense pin. Connect to CsB7

Open

14

SS

I

SPI Slave Select (active low)

-

15

MOSI

I

SPI Master Out /Slave In

-

16

MISO

OF

SPI Master In/Serial Out

-

17

SCK

I

SPI Clock

-

18

VDD

P

Power

-

19

DRDY

OF

SPI Data Ready handshake line

Open

20

CHANGE

OF

State change notification

Open

21

VSS

P

Ground

-

22

SPREAD

OD

Spread-spectrum drive

Connect to Vdd (high) to enable

Connect to Vss (low) to disable

-

23

SNSA1 (1)

I/O

Sense pin. Connect to CsA1

Open

24

SNSKA1

I/O

Sense pin. Connect to any CsA + slider/wheel

Open

25

SNSA2 (1)

I/O

Sense pin. Connect to CsA2

Open

26

SNSKA2

I/O

Sense pin. Connect to any CsA + slider/wheel

Open

27

SNSA3 (1)

I/O

Sense pin. Connect to CsA3

Open

28

SNSKA3

I/O

Sense pin. Connect to any CsA + slider/wheel

Open

29

RESET

I

Reset (active low)

Vdd via resistor

30

SNSB1 (1)

I/O

Sense pin. Connect to CsB1

Open

31

SNSKB1

I/O

Sense pin. Connect to any CsB + Key

Open

32

SNSB2 (1)

I/O

Sense pin. Connect to CsB2

Open

1.

SNS terminals can be paired with any SNSK terminals of the same group. For example, SNSA1 can be paired with

any SNSKA terminal.

Table 1-1.

Pin Listing (Continued)

Name

Type

Function

If Unused, Connect To...

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AT42QT2100 Datasheet(PDF) 4 Page - ATMEL Corporation

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