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PDF SX9510 Data sheet ( Hoja de datos )
| Número de pieza | SX9510 | |
| Descripción | 8 Capacitive Buttons / LEDs and IR Decoder and Proximity Controller | |
| Fabricantes | Semtech | |
| Logotipo |  |
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SX9510/11
8 Capacitive Buttons, LEDs, IR Decoder and
Proximity Controller with Analog Outputs
WIRELESS & SENSING PRODUCTS
DATASHEET
GENERAL DESCRIPTION
KEY PRODUCT FEATURES
The SX9510 and SX9511 are 8–button capacitive
touch sensor controllers that include 8-channels of
LED drivers, a buzzer, an IR detector and analog
outputs designed ideally for TV applications. The
SX9510 offers proximity sensing.
Separate Core and I/O Supplies
o 2.7V – 5.5V Core Supply Voltage
o 1.65V – 5.5V I/O Supply Voltage
8 - Button Capacitance Controller
The SX9510 and SX9511 operate autonomously
using a set of programmable button sensitivities &
thresholds, plus LED intensities & breathing
functions with no external I2C communication
required.
All devices feature three individual LED driver
engines for advanced LED lighting control. On the
SX9510, a proximity detection illuminates all LEDs
to a pre-programmed intensity. Touching a button
will enable the corresponding LED to a pre-
programmed mode such as intensity, blinking or
breathing.
o Capacitance Offset Compensation to 40pF
o Adaptive Measurements For Reliable Proximity And
Button Detection
Proximity Sensing (SX9510)
o High Sensitivity
o LEDs Activated During Proximity Sense
8-channel LED Controller & Driver
o Blink And Breathing Control
o High Current, 15 mA LED Outputs
2-Channel Analog Output, 6-bit DAC Programmable
Whenever the capacitive value changes from
either a proximity detection or finger
touch/release, the controller informs the host
processor through the analog output(s) or an open
drain interrupt and an I2C register read.
The SX9510 and SX9511 do not require additional
external dynamic programming support or setting
of parameters and will adapt to humidity and
temperature changes to guarantee correct
touch/no touch information.
Control
Support Metal Overlay UI Design (SX9510)
Infra Red Detector for Power-On signaling and LED
feedback
o programmable address with eight commands
o compatible with NEC, RC5, RC6, Toshiba, RCA, etc
Simple (400kHz) I2C Serial Interface
o Interrupt Driven Communication via NIRQ Output
Power-On Reset, NRST Pin and Soft Reset
The SX9510 and SX9511 are offered in 20-ld QFN
and 24-ld TSSOP packages and operate over an
ambient temperature range of -40°C to +85°C.
Low Power
o Sleep, Proximity Sensing: 330uA
o Operating: 600uA
-40°C to +85°C Operation
TYPICAL APPLICATION CIRCUIT
4.0 mm x 4.0 mm, 20-lead QFN package
4.4 mm x 7.8 mm, 24-lead TSSOP package
CAPACITIVE
TOUCH BUTTONS
LED [7:0]
BL0
BL1
VDD
SVDD
IR-DECODER
Pb & Halogen free, RoHS/WEEE compliant
IRIN APPLICATIONS
PWRON LCD TVs, Monitors
CONTROL
BL2
BL3
BL4
BL5
TOUCH
BUTTON &
LED
DRIVER
INTERFACE
GPO/LED
ENGINE
POR
OSC
ANALOG
OUTPUT
NRST
SPO2
AOUT2/
NIRQ/
BUZZER/
PWRSTATE
SPO1
AOUT1
SVDD
BL6 SDA
I2C SCL
NVM
BL7
LS GND
White Goods
Consumer Products, Instrumentation, Automotive
Mechanical Button Replacement
ORDERING INFORMATION
Part Number
SX9511EWLTRT1
SX9511ETSTRT2
SX9510EWLTRT1
SX9510ETSTRT2
Package
QFN-20
TSSOP-24
QFN-20
TSSOP-24
SX9510EVK
Evaluation Kit
Marking
ZK72
AC72T
ZL73
AC73X
-
1 3000 Units/Reel
2 2500 Units/Reel
Revision v1.12, November 2012
© 2012 Semtech Corp.
1
www.semtech.com
1 page  
SX9510/11
8 Capacitive Buttons, LEDs, IR Decoder and
Proximity Controller with Analog Outputs
WIRELESS & SENSING PRODUCTS
DATASHEET
1.3 Marking information SX9510
ZL73
yyww
xxxxx
yyww = Date Code
xxxxx = Semtech lot number
Figure 3 Marking Information SX9510 (QFN, TSSOP)
Revision v1.12, November 2012
© 2012 Semtech Corp.
5
www.semtech.com
5 Page 
SX9510/11
8 Capacitive Buttons, LEDs, IR Decoder and
Proximity Controller with Analog Outputs
WIRELESS & SENSING PRODUCTS
DATASHEET
3 FUNCTIONAL DESCRIPTION
3.1 Introduction
3.1.1 General
The SX9510/11 is intended to be used in applications which require capacitive sensors covered by isolating
overlay material and which may need to detect the proximity of a finger/hand though the air. The SX9510/11
measures the change of charge and converts that into digital values. The larger the charge on the sensors, the
larger the number of digital value will be. The charge to digital value conversion is done by the SX9510/11 Analog
Sensor Interface (ASI).
The digital values are further processed by the SX9510/11 and converted in a high level, easy to use information
for the user’s host.
The information between SX9510/11 and the user’s host is passed through the I2C interface with an additional
interrupt signal indicating that the SX9510/11 has new information. For buttons this information is simply touched
or released. The SX9510/11 can operate without the I2C and interrupt by using the analog output interface
(SPO1, SPO2) with a changing voltage level to indicate the button touched.
3.1.2 Feedback
Visual feedback to the user is done by the button and LED pins BL[7...0]. The LED drivers will fade-in when a
finger touches a button or proximity is detected and fade-out when the button is released or finger goes out of
proximity. Fading intensity variations can be logarithmic or linear. Interval speed and initial and final light intensity
can be selected by the user.
Audible feedback can be obtained through the Special Purpose Output (SPO2) pin connected to a buzzer.
3.1.3 Analog Output Interface SPO1 and SPO2
The Analog Output Interface (AOI) is a Digital signal driven from GND to SVDD and controlled by a PWM. When
the digital signal on the SPO line is filtered with an RC low pass filter you produce a DC voltage, the level of which
depends on the buttons that has been touched. A host controller can then measure the voltage delivered by the
SPO output and determine which button is touched at any given time.
The AOI feature allows the SX9510/11 device to directly replace legacy mechanical button controllers in a quick
and effortless manner. The SX9510/11 supports up to two Analog Output Interfaces, on SPO1 and SPO2
respectively. The SX9510/11 allows buttons to be mapped on either SPO1 or SPO2. The button mapping as well
as the mean voltage level that each button produces on an SPO output can be configured by the user through a
set of parameters described in later chapters.
3.1.4 Buzzer
The SX9510/11 can drive a buzzer (on SPO2) to provide audible feedback on button touches. The buzzer
provides two phases, each of which can vary from 5ms to 30ms in length and can drive 1KHz, 2KHz, 4KHz or
8KHz tones.
3.1.5 Configuration
The control and configuration registers can be read from and written to an infinite number of times. During the
development phase the parameters can be determined and fine tuned by the users and updated over the I2C.
Once the parameter set has been determined, the settings can be downloaded over the I2C by the host each time
the SX9510/11 boots up or they can be stored in the Multiple Time Programmable (MTP) Non Volatile Memory
(NVM) on the SX9510/11. This allows the flexibility of dynamically setting the parameters at the expense of I2C
traffic or autonomous operation without host intervention.
Revision v1.12, November 2012
© 2012 Semtech Corp.
11
www.semtech.com
11 Page | ||
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