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AK4185
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带有SPI控制I/F的低能耗触摸屏控制器

Low Power Touch Screen Controller with SPI Control I/F

The AK4185 is a 4-wire/5-wire resistive touch screen controller with SPI serial interface. The AK4185 incorporates a 12-bit A/D converter, enabling a precise measurement of pressed location its pressure. The AK4186 offers an automatic continuous measurement mode and complex sequential measurement option with MAV filter preprocessing, allowing a host controller to save its computing load. The AK4185 operates with a supply voltage down to 1.6V, and is available in a chip-scale ultra package, allowing the device ideally to be used for portable/mobile applications which require high performance touch screen sensing with low power and small footprint.
Features
  1. 4-wire or 5-wire Touch Screen Interface
  2. SPI* Serial Interface
  3. 12bit SAR A/D Converter with S/H circuit
  4. Throughput Rate: 300Ksps (Typ.)
  5. Pen Pressure Measurement (4-wire)
  6. Continuous Read by one time command (External Clock Mode)
  7. Built-in Clock Generator (For Sequence Mode)
  8. Preprocessing with Median Averaging Filter (in Sequence Mode)
  9. Screen Touch Detection Output Pin (PENIRQN)
  10. On-chip Temperature Measurement
  11. Low Voltage Operation: VDD = 1.6V ~ 3.6V
  12. Low Power Consumption: 240μA at 1.8V
  13. Auto Power Down
  14. Package: 12-pin CSP (1.96mm x 1.46mm, pitch 0.5mm)
  15. Software Compatible with AK4182A

  16. * SPI is a trademark of Motorola, Inc
Applications

     

  1. Mobile Phones, Smart Phones

  2. PMP, MP3 Players, PNDs

  3. Digital Still Cameras, Digital Video Camcorders
AK4185 BLOCK DIAGRAM
AK4523 Diagram
Further Information

 

 

pdf

Download Datasheet

AK4185

May 2008

   
pdf

Download

Board Manual

AKD4185

Novenber 2007




 

 

 

 

 

 

 

 

 

 

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