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SX8677ICSTRT Datasheet(PDF) 3 Page - Semtech Corporation |
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SX8677ICSTRT Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 63 page ADVANCED COMMUNICATIONS & SENSING Rev 1 – 25 th July 2011 3 www.semtech.com SX8677/SX8678 Haptics Enabled Multitouch 4/5-Wire Resistive Touchscreen Controller with Proximity Sensing 5.3.5 PROXDIFF Update 32 5.3.6 PROXSTAT Update 32 5.4 Host Operation 33 5.4.1 General Description 33 5.4.2 Proximity Sensing vs Touch Operations 33 5.4.3 Minimum Scan Period (i.e. PROXSCANPERIOD) 35 6 HAPTICS INTERFACE (SX8677/78) .......................................................................................... 36 6.1 Introduction 36 6.2 ERM Load 36 6.2.1 Introduction 36 6.2.2 PWM Mode 37 6.2.3 I2C Mode 37 6.3 LRA Load 37 6.3.1 Introduction 37 6.3.2 PWM Mode 38 6.3.3 I2C Mode 38 6.4 Short-Circuit Protection 38 7 TEMPERATURE SENSOR.......................................................................................................... 39 8 INTERRUPT (NIRQ) .................................................................................................................. 40 8.1 Introduction 40 8.2 Registers Overview 40 8.2.1 RegIrqMsk 40 8.2.2 RegIrqSrc 40 8.2.3 RegStat 40 8.3 Host Procedure 40 9 AUXILIARY PINS (AUX1/AUX2/AUX3)...................................................................................... 41 10 RESET...................................................................................................................................... 42 10.1 Hardware (POR and NRST) 42 10.2 Software (RegReset) 42 10.3 ESD Event (RESETSTAT) 42 11 I2C INTERFACE........................................................................................................................ 43 11.1 Introduction 43 11.2 I2C Address 43 11.3 Write Register 43 11.4 Read Register 44 11.5 Write Command (Touchscreen Interface) 44 11.6 Read Channel (Touchscreen Interface) 45 12 REGISTERS DETAILED DESCRIPTION ...................................................................................... 47 13 APPLICATION INFORMATION ................................................................................................... 59 13.1 Typical Application Circuit 59 13.2 External Components Recommended Values 59 13.3 Multitouch Gestures 59 13.3.1 Pinch/Stretch 59 13.3.2 Rotate 60 14 PACKAGING INFORMATION ..................................................................................................... 61 14.1 QFN Package 61 14.2 CSP Package 62 |
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