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PDF CAP1105 Data sheet ( Hoja de datos )
| Número de pieza | CAP1105 | |
| Descripción | 5 and 6 Channel Capacitive Touch Sensor | |
| Fabricantes | SMSC Corporation | |
| Logotipo |  |
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CAP1105 / CAP1106
5 and 6 Channel Capacitive Touch
Sensor
PRODUCT FEATURES
General Description
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.
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.
Datasheet
Applications
Desktop and Notebook PCs
LCD Monitors
Consumer Electronics
Appliances
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
— SMBus / I2C compliant interface (CAP1106-1 only)
— SMSC BC-Link interface (CAP1106-2 only)
— SPI communications (CAP1105 only)
Low Power Operation
— 5uA quiescent current in Deep Sleep
— 50uA quiescent current in Standby (1 sensor input
monitored)
— Samples one or more channels in Standby
Available in 10-pin 3mm x 3mm RoHS compliant DFN
package
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 GND
Capacitive Touch Sensing Algorithm
SMBus /
BC-Link
Protocol
CS1 CS2 CS3 CS4 CS5 CS6
SMCLK1 / BC_CLK2
SMDATA1 / BC_DATA2
ALERT#1 / BC_IRQ#2
1 = CAP1106-1
2 = CAP1106-2
CAP1105 BLOCK DIAGRAM
VDD GND
Capacitive Touch Sensing
Algorithm
SPI Protocol
CS1 CS2 CS3 CS4 CS5
SPI_CS#
SPI_CLK
SPI_MOSI
SPI_MISO
SMSC CAP1105 / CAP1106
DATASHEET
Revision 1.32 (01-05-12)
1 page  
5 and 6 Channel Capacitive Touch Sensor
Datasheet
List of Figures
Figure 1.1
Figure 1.2
Figure 3.1
Figure 3.2
Figure 3.3
Figure 3.4
Figure 3.5
Figure 3.6
Figure 3.7
Figure 3.8
Figure 4.1
Figure 4.2
Figure 4.3
Figure 4.4
Figure 6.1
Figure 6.2
Figure 6.3
Figure 6.4
Figure 6.5
Figure 6.6
CAP1106 Pin Diagram (10-Pin DFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
CAP1105 Pin Diagram (10-Pin DFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SMBus Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SPI Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Example SPI Bus Communication - Normal Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SPI Reset Interface Command - Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SPI Set Address Pointer Command - Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SPI Write Command - Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SPI Read Command - Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SPI Read Command - Normal Mode - Full. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
System Diagram for CAP1106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
System Diagram for CAP1105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Sensor Interrupt Behavior - Repeat Rate Enabled. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Sensor Interrupt Behavior - No Repeat Rate Enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
10-Pin DFN 3mm x 3mm Package Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10-Pin DFN 3mm x 3mm Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10-Pin DFN 3mm x 3mm PCB Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
CAP1106-1 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
CAP1106-2 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
CAP1105 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
SMSC CAP1105 / CAP1106
5
DATASHEET
Revision 1.32 (01-05-12)
5 Page 
5 and 6 Channel Capacitive Touch Sensor
Datasheet
Chapter 2 Electrical Specifications
Table 2.1 Absolute Maximum Ratings
Voltage on 5V tolerant pins (V5VT_PIN)
Voltage on 5V tolerant pins (|V5VT_PIN - VDD|) Note 2.2
Voltage on VDD pin
Voltage on any other pin to GND
Package Power Dissipation up to TA = 85°C for 10 pin DFN
(see Note 2.3)
Junction to Ambient (θJA)
Operating Ambient Temperature Range
Storage Temperature Range
ESD Rating, All Pins, HBM
-0.3 to 5.5
0 to 3.6
-0.3 to 4
-0.3 to VDD + 0.3
0.7
77.7
-40 to 125
-55 to 150
8000
V
V
V
V
W
°C/W
°C
°C
V
Note 2.1
Stresses above those listed could cause permanent damage to the device. This is a stress
rating only and functional operation of the device at any other condition above those
indicated in the operation sections of this specification is not implied.
Note 2.2
Note 2.3
For the 5V tolerant pins that have a pull-up resistor, the voltage difference between
V5VT_PIN and VDD must never exceed 3.6V.
The Package Power Dissipation specification assumes a recommended thermal via design
consisting of a 2x2 matrix of 0.3mm (12mil) vias at 1.0mm pitch connected to the ground
plane with a 1.6 x 2.3mm thermal landing.
Table 2.2 Electrical Specifications
VDD = 3V to 3.6V, TA = 0°C to 85°C, all Typical values at TA = 27°C unless otherwise noted.
CHARACTERISTIC SYMBOL
MIN
TYP MAX UNIT
CONDITIONS
DC Power
Supply Voltage VDD 3.0 3.3 3.6 V
SMSC CAP1105 / CAP1106
11
DATASHEET
Revision 1.32 (01-05-12)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CAP1105.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CAP1105 | 5 and 6 Channel Capacitive Touch Sensor | SMSC Corporation |
| CAP1106 | 5 and 6 Channel Capacitive Touch Sensor | SMSC Corporation |
| CAP1106 | 6 Channel Capacitive Touch Sensor |  Microchip |
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