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PDF CAP1214 Data sheet ( Hoja de datos )
| Número de pieza | CAP1214 | |
| Descripción | Multiple Channel Capacitive Touch Sensor and LED Driver | |
| Fabricantes | SMSC Corporation | |
| Logotipo |  |
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CAP1214
Multiple Channel Capacitive Touch
Sensor and LED Driver
PRODUCT FEATURES
Datasheet
General Description
Features
The CAP1214 is a multiple channel Capacitive Touch
sensor and LED Driver.1
The CAP1214 contains up to fourteen (14) individual
Capacitive Touch sensor inputs with programmable
Fourteen (14) capacitive touch sensor inputs
— Compensates for variable sensing pads
— Programmable sensitivity
— High SNR allows for easy tuning
— Automatic recalibration
sensitivity for use in touch button and slider switch
applications. Each sensor input contains automatic
recalibration with programmable time delays.
— Slider acceleration and position detection
— Proximity detection
Lid closure detection
The CAP1214 includes compensation circuitry that
provides uniform touch sensitivity across a wide range
of external sensing pad capacitance.
Low power operation
— 4.5uA quiescent current in Deep Sleep
— 250uA quiescent current in Sleep, monitoring 1 button
FEEDBACK pin can drive a piezo transducer when a
The CAP1214 also contains eleven (11) low side LED
touch is detected
drivers that offer full-on / off, variable rate blinking,
dimness controls, and breathing. LED outputs can be
linked to capacitive sensor channels.
User controlled reset
Low external component count
SMBus 2.0 compliant interface to change operating
Applications
Consumer Electronics
parameters to work in a wide variety of systems
— Block Read and Write function for quick tasking
Eleven (11) LED driver outputs
Desktop and Notebook PCs
LCD Monitors
— Programmable blink, breathe, and dimness controls
— 8 configurable as GPIOs
— LEDs can be linked to capacitive sensor channels
1. SMSC and the SMSC logo are registered trademarks and
SMSC RightTouch is a trademark of Standard Microsystems
Corporation ("SMSC").
Development boards and software available
Available in 32-pin 5mm x 5mm QFN Lead-free
RoHS Compliant package
Block Diagram
LED2
LED4
LED6
LED8 LED10
LED1
LED3
LED5
LED7
LED9 LED11
RESET
VDD GND
LED Blink, Breathe, and Dimness control
Capacitive Sensing Algorithm
SMBus
Slave
Protocol
CS1
CS3
CS5
CS7
CS9
CS11
CS13
CS2
CS4
CS6
CS8
CS10
CS12
CS14
SMCLK
SMDATA
ALERT
FEEDBACK
SMSC CAP1214
DATASHEET
Revision 1.0 (08-30-10)
1 page  
Multiple Channel Capacitive Touch Sensor and LED Driver
6.39
6.40
6.41
6.42
6.43
6.44
6.45
6.46
6.47
6.48
6.49
6.50
6.51
6.52
6.53
6.54
6.55
6.56
6.57
6.58
6.59
6.60
6.61
6.62
Datasheet
LED Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.39.1 LED Status 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.39.2 LED Status 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Feedback Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Feedback Channel Configuration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.41.1 Feedback Channel Configuration 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.41.2 Feedback Channel Configuration 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Feedback One-Shot Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
LED / GPIO Direction Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
LED / GPIO Output Type Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
GPIO Input Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
LED Output Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
6.46.1 LED Output Control 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
6.46.2 LED Output Control 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
LED Polarity Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
6.47.1 LED Polarity 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.47.2 LED Polarity 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Linked LED Transition Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
6.48.1 Linked LED Transition Control 1 - 77h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
6.48.2 Linked LED Transition Control 2 - 78h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
LED Mirror Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
6.49.1 LED Mirror Control 1 - 79h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
6.49.2 LED Mirror Control 2 - 7Ah . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Sensor LED Linking Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
LED Behavior Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
6.51.1 LED Behavior 1 - 81h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
6.51.2 LED Behavior 2 - 82h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
6.51.3 LED Behavior 3 - 83h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
LED Pulse 1 Period Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
LED Pulse 2 Period Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
LED Breathe Period Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
LED Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
LED11 Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
LED Pulse and Breathe Duty Cycle Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
LED Direct Ramp Rates Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
LED Off Delay Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Sensor Calibration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Product ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Revision Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Chapter 7 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
7.1 Package Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
7.2 Package Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Chapter 8 Datasheet Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
SMSC CAP1214
5
DATASHEET
Revision 1.0 (08-30-10)
5 Page 
PIN # PIN NAME
23 RESET
24
25
26
27
28
29
30
31
32
Bottom
Plate
FEEDBACK
N/C
CS1
CS2
CS3
CS4
CS5
CS6
CS7
GND
Multiple Channel Capacitive Touch Sensor and LED Driver
Table 1.1 Pin Description for CAP1214 (continued)
Datasheet
PIN FUNCTION
Soft reset for system - resets all registers to
default values
Sensor press feedback output.
Not Connected
Capacitive Touch Sensor 1
Capacitive Touch Sensor 2
Capacitive Touch Sensor 3
Capacitive Touch Sensor 4
Capacitive Touch Sensor 5
Capacitive Touch Sensor 6
Capacitive Touch Sensor 7
PIN
TYPE
DI (5V)
DO
N/A
AIO
AIO
AIO
AIO
AIO
AIO
AIO
UNUSED
CONNECTION
Connect to Ground
Leave open
Connect to Ground
Connect to Ground
Connect to Ground
Connect to Ground
Connect to Ground
Connect to Ground
Connect to Ground
Connect to Ground
Power Ground
Power
n/a
The pin types are described in Table 1.2, "Pin Types". All pins labeled with (5V) are 5V tolerant.
Note: For all 5V tolerant pins that require a pull-up resistor, the voltage difference between VDD and
the pull-up voltage must never exceed 3.6V.
Table 1.2 Pin Types
PIN TYPE
AIO
DI
DIOD
DO
OD
Power
DESCRIPTION
Analog Input / Output - this pin is used as an I/O for analog signals.
Digital Input - this pin is used as a digital input. This pin is 5V tolerant.
Digital Input / Open Drain Output - this pin is used as an digital I/O. When it is used as an
output, It is open drain and requires a pull-up resistor. This pin is 5V tolerant.
Push-pull Digital Output - this pin is used as a digital output and can sink and source current.
Open Drain Digital Output - this pin is used as a digital output. It is open drain and requires a
pull-up resistor. This pin is 5V tolerant.
This pin is used to supply power or ground to the device.
SMSC CAP1214
11
DATASHEET
Revision 1.0 (08-30-10)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CAP1214.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CAP1214 | Multiple Channel Capacitive Touch Sensor and LED Driver | SMSC Corporation |
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