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Date of release: April 2014

Document order number: 9397 750 17551

Printed in the Netherlands

The eight input channels operate independently of each

other. There is also a built-in option for a matrix arrangement.

With this arrangement, an interrupt is only generated when

two channels are activated simultaneously. The configuration

suppresses additional channel outputs when two channels are

already active.

Both capacitive sensor circuits make it straightforward

to implement a touch display and to add significant

improvements to the user interface. A passive display can be

integrated with touch capabilities in three ways:

(1) add-on integration, where touch pads reside on an extra

touch foil or glass, (2) on-cell integration, where touch pads are

deposited in a separate layer between the front glass and the

top polarizer, and (3) in-cell integration, where touch pads are

placed on the same layer as the display segments, surrounding

the segment electrodes.

RF

RC

CF

opt. RC

opt. RC

opt. RC

opt. RC

RPU

IN[0]

IN[1]

IN[2]

IN[3]

IN[7]

100 nF

100 nF

TEST

100 nF

CPC[0]

CPC[7]

SCL

SDA

CLK_IN

INT_IN

CLK_OUT

INT

A0

SLEEP

PCF8885

RPU

100 nF

to MCU

to MCU

013aaa554

(1)

PCF8885TS application with 16 touch keys

Demo board OM11058 for climate-control application with

touch foil on TFT display

Demo boards OM11057 and OM11057A for multiplexed

and direct-touch applications

Evaluation board OM11056 with two PCF8885TS switches

enabling 64 touch sensors

Touch control on a passive LCD, with touch sensors

integrated into LCD cells

Type number

Channels

Touch /proximity pads

Package(s)

Grade

Evaluation and demo board(s)

PCF8885TS

8

28 with one circuit

64 with two cascaded circuits

TSSOP28

Industrial

Evaluation boards OM11056/7/7A

Touch-on-display demo board OM11058

PCA8885TS

8

28 with one circuit

64 with two cascaded circuits

TSSOP28

Automotive AEC-Q100

Evaluation boards OM11057/57A

Touch-on-display demo board OM11058

PCA8886TS

2

2 touch or poximity pads

TSSOP16

Automotive AEC-Q100

Evaluation and demo board OM11052

PCF8883T, PCF8883CX8

1

1 touch or poximity pad

SO8, WLCSP

Industrial

Evaluation and demo board OM11055

Selection guide