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GSL1680 Dataheets PDF



Part Number GSL1680
Manufacturers Silead
Logo Silead
Description Capacitive Touchscreen Controller
Datasheet GSL1680 DatasheetGSL1680 Datasheet (PDF)

GSL1680, 1688 Capacitive Touchscreen Controller Features  Highlight o Outstanding anti RF, LCD and power supply interference o Perfect soft-touch feeling o Auto tuning and auto calibration  Number of Channels o Up to 16x10 o Detect up to 10 fingers o Scan order programmable  Zero Additional part Count o Power bypass capacitor only  Signal Processing o Advanced anti-interference signal processing using both hardware engine and firmware o Self-Calibration o Water and face suppression o Down an.

  GSL1680   GSL1680


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GSL1680, 1688 Capacitive Touchscreen Controller Features  Highlight o Outstanding anti RF, LCD and power supply interference o Perfect soft-touch feeling o Auto tuning and auto calibration  Number of Channels o Up to 16x10 o Detect up to 10 fingers o Scan order programmable  Zero Additional part Count o Power bypass capacitor only  Signal Processing o Advanced anti-interference signal processing using both hardware engine and firmware o Self-Calibration o Water and face suppression o Down and up scaling support to match LCD resolution o Support axis flipping and axis switch over for portrait and landscape modes  Scan Speed o Maximum single touch up to 200Hz o Configurable to allow power/speed optimization  Response times o Initial latency < 10ms for first touch from idle  Sensors o Support single layer ITO true multi-touch mutual capacitive sensor o Support non-MoAlMo sensor o Support OGS ( one glass sensor) o Works with PET or glass sensors, including curved profiles o Works with single or dual ITO layer o Works with all proprietary sensor patterns on the markets o Works with passive stylus  Panel Thickness o Glass up to 2.5mm, screen size dependent o Plastic up to 1.2mm, screen size dependent  Interface o I2C compatible slave mode 400KHz. o Interrupt to Host  Power o Single Power supply, 2.6v~3.3v 1 Silead Inc. Capacitive Touchscreen Controller GSL1680, 1688 Capacitive Touchscreen Controller o I/O Interface 1.8v /3.3 compatible  Power consumption o Active: <9mA, subject to configuration o Green: <3mA, subject to configuration o Sleep: <30uA  Package o 40-pin QFN, 5x5 mm 2 Silead Inc. Capacitive Touchscreen Controller GSL1680, 1688 Capacitive Touchscreen Controller Contents Features................................................................................................................................................................1 1. Pinout and Schematic .................................................................................................................................6 1.1. Pinout Configuration ..........................................................................................................................6 1.2. Pinout Description ..............................................................................................................................6 1.3. Schematic ............................................................................................................................................8 2. Overview......................................................................................................................................................8 2.1. Introduction ........................................................................................................................................8 2.2. Resources ............................................................................................................................................9 3. Capacitive touch Basics.............................................................................................................................10 3.1. Sensor and Electrode construction..................................................................................................10 3.2. Scanning Sequence ...........................................................................................................................11 3.3. Touchscreen sensitivity ....................................................................................................................11 4. Detail Operation........................................................................................................................................12 4.1. Power Up and Reset .........................................................................................................................12 4.2. Calibration .........................................................................................................................................12 4.3. Communication.................................................................................................................................13 4.3.1. Communications Protocol .......................................................................................................13 4.3.2. I2C-compatible Addresses .......................................................................................................13 4.3.3. Writing to the Device ...............................................................................................................13 4.3.4. Reading from the Device..........................................................................................................14 4.3.5. SDA, SCL.....................................................................................................................................14 4.3.6. IRQ .....................................................................................................


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