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SX8677IWLTRT Datasheet(PDF) 1 Page - Semtech Corporation |
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SX8677IWLTRT Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 63 page  ADVANCED COMMUNICATIONS & SENSING Rev 1 – 25 th July 2011 1 www.semtech.com SX8677/SX8678 Haptics Enabled Multitouch 4/5-Wire Resistive Touchscreen Controller with Proximity Sensing GENERAL DESCRIPTION The SX8677 and SX8678 belong to a family of high performance haptics enabled multitouch 4/5-wire resistive touch screen controller with proximity detection, optimized for hand held applications such as mobile phones, portable music players, game machines, point-of-sales terminal and other consumer and industrial applications. They feature a wide input supply range from 2.3V to 3.6V. The controller computes touch screen X-Y coordinates and touch pressure with a precision, low power 12-bit analog-digital converter. On-chip data averaging processing algorithms can be activated to reduce host activity and suppress system noise. The processing core features low power modes which intelligently minimize current in operation as well as in automatic shut-down. Multitouch feature enables detection of 2 fingers on the touchscreen and several gestures like rotation and pinch/stretch. A capacitive proximity detection circuit has been integrated into the SX8677 to enable host controlled power management for battery applications. Proximity detection above 5 cm is possible using either the resistive touch screen as the sensor or with a single conductive plate, with communication to the host via the serial interface. The SX8677 and SX8678 also integrate a haptics motor driver for Linear Resonant Actuator (LRA) and Eccentric Rotating Mass (ERM) micro motors with up to 250mA drive current. Haptics control can be performed using either an external PWM signal or the I2C serial interface, providing simple host interfacing and minimizing its I/O requirement. The SX8677/78 supports Immersion TouchSense® 3000 haptic control software for high quality touch feedback. Integrated very high ESD protection, of up to ±15kV on display inputs not only saves cost and board area, but also increases application reliability. The three devices have an ambient operating temperature range of -40°C to +85°C, and are offere d in both a 4mm x 4mm, 20-lead QFN package and 2.07mm x 2.07mm 19-lead CSP package for space- conscious applications. TYPICAL APPLICATIONS • Game Machines, Portable Music Players • Mobile Phones • DSC, DVR, Phones • POS/POI Terminals • Touch-Screen Monitors ORDERING INFORMATION KEY PRODUCT FEATURES • Low Voltage Operation 2.3V to 3.6V Supply Integrated Low Drop Out (LDO) Regulator • Low Power Consumption 30uA@2.3V 8ksps (ESR) 0.4uA Shut-Down Current • 4/5-Wire Touchscreen Interface Precision, Ratiometric 12-bit ADC Up to 5000 (X-Y) coordinates/second (c/s) Programmable Digital Filtering/Averaging Touch Pressure Measurement (4-Wire) Programmable Operating Mode (Manual, Pen Detect, Pen Trigger) • Capacitive Proximity Sensing (SX8677) No Additional Components Required Uses Resistive Touchscreen or a Simple Conductive Area as the Sensor >5 cm Detection Distance 8uA @ 200ms Scan Period Fully Programmable (Sensitivity, etc) • Haptics Driver for LRA and ERM (SX8677/78) Supports Immersion TouchSense® 3000 haptic control software Haptics Waveform Generation Control (I2C or PWM Input) Short Circuit Protection Early Warning and Over-Temperature Monitoring and Protection • 400kHz I2C Serial Interface • Several Host Operating Modes Available Maskable Interrupt Output (NIRQ) Real-time Events Monitoring (AUX1-3) Polling (I2C) • Hardware, Software, and Power-On Reset • -40°C to +85°C Operating Temperature Range • 15kV HBM & IEC ESD Protection • Small Footprint Packages • Pb & Halogen Free, RoHS/WEEE compliant Part Number Package Marking SX8677IWLTRT QFN-20 SX8677ICSTRT WLCSP-19 RNT2 SX8678IWLTRT QFN-20 SX8678ICSTRT WLCSP-19 RP9X SX8674EVK Evaluation Kit - I2C NRST NIRQ SX8677 Host Controller MULTITOUCH CONTROL PROXIMITY SENSING M HAPTICS DRIVER |
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