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Control IC-HW0868

The HW0868 chip is Electromagnetic technology control chip. It works with electromagnetic pen to provide a convenient input solutions, It supports 2 to 100 inch screen and can be applied to Drawing Board, Tablet PC, E-Paper & E-Books, Tablet Monitor, Mobile Handset, Net Book etc.
Features

  • 0.18um Tech
  • 2.7-3.6v voltage supply
  • Integrated PRG converter to provide the internal 1.5V supply
  • Support idle/sleep mode to save power
  • Integrated 16K words (32Kbytes) local program memory
  • Integrated 4K words (8Kbytes) local data memory
  • Run at 4MHz-24MHz frequency, low power consumption
  • Up to 92(in/out configurable) scan points
  • 8M/16M Crystal Oscillator provide the run mode system clock (default 8M)
  • Additional 5 System Time Counters
  • 16 channels GPIO
  • Watch dog timer (clocked by 32K RCOSC or external crystal)
  • 2.7 voltage detect logic
  • 32K on-chip RC Oscillator provide the power saving mode system clock
  • SPI/I2C/UART/USB bus interface
  • USB full speed controller/PHY with 320byte buffer & 3 interrupt endpoints
  • I2C/UART/USB firmware update supported (USB update need user program support)
  • High Screen Resolution 5080lpi.
  • High Pressure Levels 2048.
  • Support analog and digital electromagnetic pen
  • High-precision positioning ±0.1mm.
  • Low power consumption < 8mA. (only chip part)
  • 169 pin BGA package
Item HW0868 HW0808
Touch screen size 2~100 inch 2~10 inch
Support pen type digital and analog pen - analog pen -
Resolution 5080 LPI 2048 LPI
Max. report rate 220 dots/s 133 dots/s
Tilt range ±60 ° ±20 °
Max. read height 25(center)/10(edge) mm 15(center)/5(edge) Mm
Interface I2C、USB、UART - UART -
Interface voltage adjust V 3.3 V
External Crystal 8/16 MHZ 4/8 MHZ
Configurable Frequency 167/333/400/500/533/561/592/667… kHz 167/333/400/500/667 KHz
Voltage 3.3±0.3 V 3.3±0.3 V
Max. Current 10 ma 8 ma
Package BGA169 0.5mm - BGA121 0.5mm -
  - TQFP128 0.4mm -
Operating temperature -40~85 -40~85
 
Pen accuracy ±0.1/0.4 mm ±0.4/0.8 mm
Max. pressure level 2048 - 1024 -
Pen track-ability >3 m/s <1.5 m/s
Pen Inspection time <100(digital pen)/60 ms <100 ms
Max.pen key number 4 - 1 -
Support pen eraser yes - yes -
         

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