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KEYBOARD ICs
POINTING STICK ICs
JOYSTICK/ERGOTRAC

SK7100 - PS/2 Pointing Stick Mouse Encoder

Overview  Typical Applications  Support Software Datasheet   (Active)

 

Features
  • Low cost and space saving solution
  • Built-in oscillator, analog and digital circuit
  • Low count of total components. Only several resistors and capacitor are needed
  • Advanced motion control algorithm
  • Z-Tap algorithm to simulate left button click, double click and drag
  • CellMute technology filters the wireless EMI noise from cellular phones and wireless networks
  • Works with standard Windows® mouse drivers
  • Works with Lenovo TrackPoint® drivers
  • Low profile QFN 32 pin package: 5x5mm 0.95 Max (LxWxH)
  • Low power consumption. 650uA (idle), 4.6 mA (operation)
  • 3.0V to 5.25V operating voltage
  • Industry temperature range: -40°C to +85°C
Overview

The SK7100 pointing stick mouse encoder is a cost-effective, space-saving and highly integrated IC that interfaces a force-stick sensor to PS/2 port.

The SK7100 works with most of popular force stick sensors with tolerance up to +/- 20%. The SK7100 highly integrates oscillator, analog and digital circuit to provide low cost and space saving solution. Only several low tolerance external components are needed.

Typically, consuming 650uA in idle state, the SK7100 is ideal for battery-operated systems.

Deploying CellMute technology to filter the wireless EMI noise from cellular phones and wireless networks, the SK7100 can work quietly in wireless environment.

The SK7100 partially implements the Lenovo TrackPoint® extended command protocol and can work with Lenovo TrackPoint® device drivers directly.  

Typical Applications
  • Laptop computer
  • Portable computer
  • Keyboards
  • Instrumentation

 

Support Software

A set of software tools were developed to support SK7100 design. Click here to download these tools.

  • AD reader - Read X, Y, Z AD value
  • PSCOM.exe - Send PS/2 command and receive response.
  • JOYTEST.exe - General Pointing Stick test program

 

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