CAP1005 / CAP1006
5 and 6 Channel Capacitive
Touch Sensor
Datasheet
PRODUCT FEATURES
General Description
Applications
Desktop and Notebook PC’s
LCD Monitors
Printers
The CAP1006 and CAP1005 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.
Appliances
Features
Six (6) Capacitive Touch Sensor Inputs - CAP1006
Five (5) Capacitive Touch Sensor Inputs - CAP1005
The CAP1005 / CAP1006 offers multiple power states
operating at low quiescent currents.
—
—
—
Programmable sensitivity
Automatic recalibration
Individual thresholds for each button
During the Standby mode of operation, one or more
Capacitive Touch Sensors are active.
Flexible Capacitive Touch Sense algorithm
Multiple Communication interfaces
—
—
—
SMBus / I2C compliant interface (CAP1006-1 only)
SMSC BC-Link interface (CAP1006-2 only)
SPI communications (CAP1005 only)
The Deep Sleep mode of operation is the lowest power
state available drawing 3uA of current. During this
mode, no sensors are active. Communications will wake
the device.
Low Power operation
—
—
—
3uA quiescent current in Deep Sleep
Samples one or more channels in Standby
Open Drain or Push-Pull
Available in 10-pin 3mm x 3mm RoHS compliant DFN
package
CAP1006 Block Diagram
CAP1005 Block Diagram
VDD GND
VDD GND
SMCLK1 / BC_CLK2
SMBus
SPI_CS#
SPI_CLK
SPI
SMDATA1 / BC_DATA2
Capacitive Sensing Algorithm
Slave
Capacitive Sensing Algorithm
Protocol
Protocol
SPI_MOSI
ALERT#1 / BC_IRQ#2
SPI_MISO
1 = CAP1006-1
2 = CAP1006-2
CS1 CS2 CS3 CS4 CS5 CS6
CS1 CS2 CS3 CS4 CS5
Note: I2C is a trademark of NXP semiconductor. BC-Link is a trademark of SMSC.
SMSC CAP1005 / CAP1006
DATASHEET
Revision 1.1 (08-05-09)