CAP1005 Datasheet, PDF (1/53 Pages) SMSC Corporation – 5 and 6 Channel Capacitive Touch Sensor

CAP1005 / CAP1006
5 and 6 Channel Capacitive
Touch Sensor
PRODUCT FEATURES
General Description
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.
The CAP1005 / CAP1006 offers multiple power states
operating at low quiescent currents.
During the Standby mode of operation, one or more
Capacitive Touch Sensors are active.
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.
Datasheet
Applications
„ Desktop and Notebook PC’s
„ LCD Monitors
„ Printers
„ Appliances
Features
„ Six (6) Capacitive Touch Sensor Inputs - CAP1006
„ Five (5) Capacitive Touch Sensor Inputs - CAP1005
— Programmable sensitivity
— Automatic recalibration
— Individual thresholds for each button
„ 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)
„ 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
VDD GND
Capacitive Sensing Algorithm
SMBus
Slave
Protocol
CS1 CS2 CS3 CS4 CS5 CS6
SMCLK¹ / BC_CLK²
SMDATA¹ / BC_DATA²
ALERT#¹ / BC_IRQ#²
1 _{= CAP1006-1}
2 _{= CAP1006-2}
CAP1005 Block Diagram
VDD GND
Capacitive Sensing Algorithm
SPI
Protocol
SPI_CS#
SPI_CLK
SPI_MOSI
SPI_MISO
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)