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SX8661Z Dataheets PDF



Part Number SX8661Z
Manufacturers Semtech
Logo Semtech
Description Capacitive Button Touch and Proximity Controller
Datasheet SX8661Z DatasheetSX8661Z Datasheet (PDF)

SX8661Z Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output ADVANCED COMMUNICATIONS & SENSING DATASHEET cn cp vdd intb scl sda GENERAL DESCRIPTION The SX8661Z is an ultra low power, fully integrated 8-channel solution for capacitive touch-button and proximity detection applications. Unlike many capacitive touch solutions, the SX8661Z features dedicated capacitive sense inputs (that requires no external components) in addition to 8 gener.

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SX8661Z Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output ADVANCED COMMUNICATIONS & SENSING DATASHEET cn cp vdd intb scl sda GENERAL DESCRIPTION The SX8661Z is an ultra low power, fully integrated 8-channel solution for capacitive touch-button and proximity detection applications. Unlike many capacitive touch solutions, the SX8661Z features dedicated capacitive sense inputs (that requires no external components) in addition to 8 general purpose I/O ports (GPIO). Each of the 8 on-chip GPIO/LED driver is equipped with independent PWM source for enhanced visual effect such as dimming, and breathing. The SX8661Z 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 SX8661Z incorporates a versatile firmware that was specially designed to simplify capacitive touch solution design and offers reduced time-to-market. Integrated multi-time programmable memory 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 SX8661Z supports the 400 kHz I²C serial bus data protocol and includes a field programmable slave address. The tiny 4mm x 4mm footprint makes it an ideal solution for portable, battery powered applications where power and density are at a premium. TYPICAL APPLICATION CIRCUIT Analog Output Interface mother board proximity vana resetb gnd vdig gpo7 gpo6 cap0 cap1 cap2 cap3 cap4 cap5 cap6 cap7 analog sensor interface clock generation RC SX8661Z gnd PWM LED controller gpo5 gpo4 power management gpo3 micro processor RAM ROM GPIO controller NVM I2C gpo2 gnd gpo1 gpo0 bottom plate d6 d5 d4 d3 d2 d1 d0 KEY PRODUCT FEATURES  Complete 8 Sensors Capacitive Touch-Button Solution o Up to 8 LED Drivers for individual Visual Feedback with Auto Lightening o Configurable Single or Continuous Fading Mode o 256 steps PWM Linear and Logarithmic control  Proximity Sensing up to several centimetres  High Resolution Capacitive Sensing o Up to 100pF of Offset Cap. Compensation at Full Sensitivity o Capable of Sensing up thru 5mm thick Overlay Materials  Up to 2 Analog Output Interfaces (AOI-A and AOI-B) o Enable button detection thru host’s ADC  Support of buzzer for audible feedback  User-selectable Button Reporting Configuration o Report Single or Report Strongest  Extremely Low Power o 8uA (typ) in Sleep Mode o 70uA (typ) in Doze Mode (195ms) o 200uA (typ) in Active Mode (30ms)  Programmable Scanning Period from 15ms to several seconds  Auto Offset Compensation o Eliminates false triggers due to environmental factors (temperature, humidity) o Initiated on power-up and configurable intervals  Multi-Time In-Field Programmable Firmware Parameters for Ultimate Flexibility o On-chip user programmable memory for fast, self contained start-up  No External Components per Sensor Input  Internal Clock Requires No External Components  Differential Sensor Sampling for Reduced EMI  Optional 400 KHz I²C Interface with Programmable Address  -40°C to +85°C Operation APPLICATIONS  LCD TVs, Monitors  White Goods  Notebook/Netbook/Portable/Handheld computers  Consumer Products, Instrumentation, Automotive  Mechanical Button Replacement ORDERING INFORMATION Part Number Temperature Range Package SX8661I07ZULTRT1 -40°C to +85°C Lead Free MLPQ-UT28 1 3000 Units/reel * This device is RoHS/WEEE compliant and Halogen Free Revision v4.0, February 2016 © 2012 Semtech Corp. 1 www.semtech.com SX8661Z Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output ADVANCED COMMUNICATIONS & SENSING DATASHEET Table of Contents GENERAL DESCRIPTION........................................................................................................................ 1 TYPICAL APPLICATION CIRCUIT ............................................................................................................ 1 KEY PRODUCT FEATURES..................................................................................................................... 1 APPLICATIONS....................................................................................................................................... 1 ORDERING INFORMATION...................................................................................................................... 1 1 GENERAL DESCRIPTION............................................................................................................... 5 1.1 Pin Diagram 1.2 Marking information 1.3 Pin Description 1.4 Simplified Block Diagram 1.5 Acronyms 5 5 6 7 7 2 ELECTRICAL CHARACTERISTICS .


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