CAP1105 / CAP1106
5 and 6 Channel Capacitive Touch
Sensor
PRODUCT FEATURES
Data Brief
General Description
Applications
The CAP1106 and CAP1105, which incorporate SMSC’s
RightTouch® 1 technology, are multiple channel Capacitive
Touch sensors. The CAP1106 contains six (6) individual
capacitive touch sensor inputs while the CAP1105 contains
five (5) sensor inputs. Both devices offer programmable
sensitivity for use in touch sensor applications. Each sensor
input automatically recalibrates to compensate for gradual
environmental changes.
The CAP1105 / CAP1106 includes Multiple Pattern Touch
recognition that allows the user to select a specific set of
buttons to be touched simultaneously. If this pattern is
detected, then a status bit is set and an interrupt generated.
Features
Six (6) Capacitive Touch Sensor Inputs - CAP1106
Five (5) Capacitive Touch Sensor Inputs - CAP1105
— Programmable sensitivity
— Automatic recalibration
— Individual thresholds for each button
Proximity Detection
Multiple Button Pattern Detection
Calibrates for Parasitic Capacitance
Analog Filtering for System Noise Sources
Press and Hold feature for Volume-like Applications
Multiple Communication Interfaces
Low Power Operation
Available in 10-pin 3mm x 3mm RoHS compliant DFN
package
Additionally, the CAP1105 / CAP1106 includes circuitry and
support for enhanced sensor proximity detection.
The CAP1105 / CAP1106 offers multiple power states
operating at low quiescent currents. In the Standby state of
operation, one or more capacitive touch sensor inputs are
active.
Deep Sleep is the lowest power state available, drawing
5uA (typical) of current. In this state, no sensor inputs are
active. Communications will wake the device.
Desktop and Notebook PCs
LCD Monitors
Consumer Electronics
Appliances
— SMBus / I2C compliant interface (CAP1106-1 only)
— SMSC BC-Link interface (CAP1106-2 only)
— SPI communications (CAP1105 only)
— 5uA quiescent current in Deep Sleep
— 50uA quiescent current in Standby (1 sensor input
monitored)
— Samples one or more channels in Standby
1. SMSC, the SMSC logo and RightTouch are registered trademarks
and the RightTouch logo is a trademark of Standard Microsystems
Corporation ("SMSC").
CAP1106 BLOCK DIAGRAM
VDD
CAP1105 BLOCK DIAGRAM
VDD
GND
GND
SMCLK1 / BC_CLK2
Capacitive Touch Sensing Algorithm
SMBus /
BC-Link
Protocol
SMDATA1 / BC_DATA2
SPI_CS#
Capacitive Touch Sensing
Algorithm
ALERT#1 / BC_IRQ#2
1
2
CS1
CS2
CS3
CS4
CS5
CS6
= CAP1106-1
= CAP1106-2
SPI_CLK
SPI Protocol
SPI_MOSI
SPI_MISO
CS1
SMSC CAP1105 / CAP1106
CS2
CS3
CS4
CS5
Revision 1.32 (01-05-12)
PRODUCT PREVIEW
5 and 6 Channel Capacitive Touch Sensor
Order Number(s):
ORDERING NUMBER
PACKAGE
FEATURES
CAP1106-1-AIA-TR
10-pin DFN 3mm x 3mm
(Lead-free RoHS compliant)
Six capacitive touch sensor inputs,
SMBus interface
CAP1106-2-AIA-TR
10-pin DFN 3mm x 3mm
(Lead-free RoHS compliant)
Six capacitive touch sensor inputs, BCLink interface
CAP1105-1-AIA-TR
10-pin DFN 3mm x 3mm
(Lead-free RoHS compliant)
Five capacitive touch sensor inputs, Full
Duplex SPI interface
REEL SIZE IS 4,000 PIECES
This product meets the halogen maximum concentration values per IEC61249-2-21
For RoHS compliance and environmental information, please visit www.smsc.com/rohs
Copyright © 2012 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for
construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC
reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications
before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent
rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated
version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not
designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property
damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of
this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered
trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders.
The Microchip name and logo, and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE
OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL
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TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Revision 1.32 (01-05-12)
2
PRODUCT PREVIEW
SMSC CAP1105 / CAP1106
5 and 6 Channel Capacitive Touch Sensor
Package Information
Figure 1 10-Pin DFN 3mm x 3mm Package Drawings
SMSC CAP1105 / CAP1106
3
PRODUCT PREVIEW
Revision 1.32 (01-05-12)
5 and 6 Channel Capacitive Touch Sensor
Figure 2 10-Pin DFN 3mm x 3mm Package Dimensions
Figure 3 10-Pin DFN 3mm x 3mm PCB Footprint
Revision 1.32 (01-05-12)
4
PRODUCT PREVIEW
SMSC CAP1105 / CAP1106