SX8635I05AWLTRT SEMTECH [Semtech Corporation], SX8635I05AWLTRT Datasheet

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SX8635I05AWLTRT

Manufacturer Part Number
SX8635I05AWLTRT
Description
Low Power, Capacitive Button and Wheel Touch Controller with Enhanced LED
Manufacturer
SEMTECH [Semtech Corporation]
Datasheet

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SX8635I05AWLTRT
Manufacturer:
SEMTECH
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12 100
ADVANCED COMMUNICATIONS & SENSING
G
The SX8635 is an ultra low power, fully integrated
12-channel solution for capacitive touch-buttons and
wheel with proximity detection applications. Unlike
many capacitive touch solutions, the SX8635
features dedicated capacitive sense inputs (that
requires no external components) in addition to 8
general purpose I/O ports (GPIO). Each GPIO is
typically configured as LED driver with independent
PWM source for enhanced lighting control such as
intensity and fading.
The SX8635 includes a capacitive 10 bit ADC analog
interface with automatic compensation up to 100pF.
The high resolution capacitive sensing supports a
wide variety of touch pad sizes and shapes and
allows capacitive buttons to be created using thick
overlay materials (up to 5mm) for an extremely
robust and ESD immune system design.
The SX8635 incorporates a versatile firmware that
was specially designed to simplify capacitive touch
solution design and offers reduced time-to-market.
Integrated
provides the ultimate flexibility to modify key firmware
parameters (gain, threshold, scan period, auto offset
compensation… ) in the field without the need for
new firmware development.
The SX8635 supports the 400 kHz I²C serial bus
data protocol and includes a field programmable
slave address. The tiny 5mm x 5mm footprint makes
it an ideal solution for portable, battery powered
applications where power and density are at a
premium.
T
Revision 7_8, October 10
YPICAL
ENERAL
A
D
PPLICATION CIRCUIT
ESCRIPTION
multi-time
programmable
(12 sensors) with Enhanced LED Drivers and Proximity Sensing
© 2010 Semtech Corp.
Low Power, Capacitive Button and Wheel Touch Controller
memory
1
K
A
O
1
* This device is RoHS/WEEE compliant and Halogen Free
SX8635I05AWLTRT
3000 Units/reel
EY
PPLICATIONS
RDERING
Complete Twelve Sensors Capacitive Touch Controller for
Buttons and Wheel
Proximity Sensing up to several centimetres
High Resolution Capacitive Sensing
Extremely Low Power Optimized for Portable Application
Programmable Scanning Period from 15ms to 1500ms
Auto Offset Compensation
Multi-Time In-Field Programmable Firmware Parameters
for Ultimate Flexibility
"Smart" Wake-up Sequence for Easy Activation from Doze
No External Components per Sensor Input
Internal Clock Requires No External Components
Differential Sensor Sampling for Reduced EMI
400 KHz Fast-Mode I²C Interface with Interrupt
-40°C to +85°C Operation
Notebook/Netbook/Portable/Handheld computers
Cell phones, PDAs
Consumer Products, Instrumentation, Automotive
Mechanical Button Replacement
Part Number
P
Pre-configured for 6 Buttons and a Wheel
8 LED Drivers with Individual Intensity, Fading Control
and Autolight Mode
256 steps PWM Linear and Logarithmic control
Up to 100pF of Offset Capacitance Compensation at
Full Sensitivity
Capable of Sensing through Overlay Materials up to
5mm thick
8uA (typ) in Sleep Mode
80uA (typ) in Doze Mode (Scanning Period 195ms)
220uA (typ) in Active Mode (Scanning Period 30ms)
Eliminates False Triggers due to Environmental
Factors (Temperature, Humidity)
Initiated on Power-up and Configurable Intervals
On-chip user programmable memory for fast, self
contained start-up
RODUCT
I
NFORMATION
F
EATURES
1
-40°C to +85°C Lead Free MLPQ-W32
Temperature
Range
DATASHEET
www.semtech.com
Package
SX8635

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