CAP1006 datasheet(23/53 Pages) SMSC

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5 and 6 Channel Capacitive Touch Sensor

Datasheet

SMSC CAP1005 / CAP1006

Revision 1.1 (08-05-09)

DATASHEET

Chapter 4 General Description

The CAP1006 / 1005 are multiple channel Capacitive Touch sensors. The CAP1006 contains six (6)

individual Capacitive Touch sensor inputs while the CAP1005 contains five (5) sensors. Both devices

offer programmable sensitivity for use in touch sensor applications. Each sensor automatically

recalibrates to compensate for gradual environmental changes.

The CAP1005 / CAP1006 offers multiple power states operating at low quiescent currents during its

Deep Sleep state. It can monitor one or more channels while in a lower power state and respond to

communications normally.

The device communicates with a host controller using the SPI bus (CAP1005 only), SMSC BC-Link

bus (CAP1006-2 only), or via SMBus / I2C (CAP1006-1 only). The host controller may poll the device

for updated information at any time or it may configure the device to flag an interrupt whenever a touch

is detected on any sensor.

A typical system diagram for the CAP1006 is shown in Figure 4.1 and a system diagram for the

CAP1005 is shown in Figure 4.2.

Figure 4.1 System Diagram for CAP1006

CAP1006

CS6

Embedded Controller

VDD

CS4

CS2

CS5

CS3

CS1

Touch

Button

Touch

Button

Touch

Button

Touch

Button

Touch

Button

Touch

Button

1 = CAP1006-1

2 = CAP1006-2

CAP1006 Datasheet(PDF) 23 Page - SMSC Corporation

CAP1006 Datasheet(HTML) 23 Page - SMSC Corporation

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