CAP1293-2-SN-TR datasheet(5/63 Pages) MICROCHIP

Part #	CAP1293-2-SN-TR

Description	3-Channel Capacitive Touch Sensor with Proximity

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Manufacturer	MICROCHIP [Microchip Technology]

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 2013-2015 Microchip Technology Inc.

DS00001566B-page 5

CAP1293

APPLICATION NOTE: All digital pins are 5V tolerant pins.

The pin types are described in Table 1-2, "Pin Types".

TABLE 1-1:

PIN DESCRIPTION FOR CAP1293

QFN Pin

#

SOIC Pin

#

Name

Pin Function

Pin Type

Unused

Connection

1

ALERT#

ALERT# - Active low alert / interrupt output

for SMBus alert

OD

Connect to

Ground

22

SMDATA

SMDATA - Bi-directional, open-drain SMBus

or I2C data - requires pull-up resistor

DIOD

n/a

33

SMCLK

SMCLK - SMBus or I2C clock input - requires

pull-up resistor

DI

n/a

4

VDD

Positive Power supply

Power

n/a

5

GND

Ground

Power

n/a

66

CS3

Capacitive Touch Sensor Input 3

AIO

Connect to

Ground

7

CS2 / SG

CS2 - Capacitive Touch Sensor Input 2

AIO

Connect to

Ground

7

SG - Signal Guard output

AIO

Leave open

88

CS1

Capacitive Touch Sensor Input 1

AIO

Connect to

Ground

Bottom

pad

-

Exposed

pad

Not internally connected, but recommend

grounding

--

TABLE 1-2:

PIN TYPES

Pin Type

Description

Power

This pin is used to supply power or ground to the device.

DI

Digital Input - This pin is used as a digital input. This pin is 5V tolerant.

AIO

Analog Input / Output - This pin is used as an I/O for analog signals.

DIOD

Digital Input / Open Drain Output - This pin is used as a digital I/O. When it is used as an

output, it is open drain and requires a pull-up resistor. This pin is 5V tolerant.

OD

Open Drain Digital Output - This pin is used as a digital output. It is open drain and requires

a pull-up resistor. This pin is 5V tolerant.

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CAP1293-2-SN-TR Datasheet(PDF) 5 Page - Microchip Technology

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