MPR083 Proximity Sensing Solution <ul><li>Source: Freescale  Semiconductor </li></ul>
Introduction <ul><li>Purpose </li></ul><ul><ul><li>An Overview Study on Freescale’s Proximity Sensing: MPR083 </li></ul></...
Key Features  <ul><li>1.8–3.6V operation </li></ul><ul><li>150 μA average supply current (all touch pads being monitored) ...
Applications  <ul><li>Appliances  </li></ul><ul><li>PC Peripherals  </li></ul><ul><li>Access Controls  </li></ul><ul><li>M...
Internal Block Diagram
Recommended System Connections
Proximity Sensor Selector Guide
Proximity Capacitor Model C = the capacitance in farads (F) A = the area of the plates in square meters (m2) d = the dista...
Capacitive Sensing <ul><li>E-Field devices produce a voltage inversely proportional to the change in electrode capacitance...
Capacitive Sensing Applications <ul><li>Touch Panel Keyboard </li></ul><ul><li>Water Level Measurement </li></ul><ul><li>A...
Capacitive Touch Sensor Types
Development Tools KITMPR083EVM Description: Evaluation board to demonstrate key proximity sensor features. <ul><li>Sample ...
Proximity Touch Sensing Software
Additional Resource <ul><li>For ordering the MPR083, please click the part list or </li></ul><ul><li>Call our sales hotlin...
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MPR083 Proximity Sensing Solution

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An Overview Study on Freescale’s Proximity Sensing: MPR083

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Transcript of "MPR083 Proximity Sensing Solution"

  1. 1. MPR083 Proximity Sensing Solution <ul><li>Source: Freescale Semiconductor </li></ul>
  2. 2. Introduction <ul><li>Purpose </li></ul><ul><ul><li>An Overview Study on Freescale’s Proximity Sensing: MPR083 </li></ul></ul><ul><li>Outline </li></ul><ul><ul><li>Features and Application </li></ul></ul><ul><ul><li>Internal Block Diagram of MPR083 </li></ul></ul><ul><ul><li>System Connection of MPR083 </li></ul></ul><ul><ul><li>Capacitive sensing and its application </li></ul></ul><ul><ul><li>Development tools and Software </li></ul></ul><ul><li>Content </li></ul><ul><ul><li>14 pages </li></ul></ul>
  3. 3. Key Features <ul><li>1.8–3.6V operation </li></ul><ul><li>150 μA average supply current (all touch pads being monitored) </li></ul><ul><li>10 μA standby current </li></ul><ul><li>Supports an 8-position rotary </li></ul><ul><li>Proprietary false touch rejection technology </li></ul><ul><li>Ongoing pad analysis and detection not reset by EMI events </li></ul><ul><li>IRQ output advises when FIFO has data </li></ul><ul><li>System can set interrupt behavior as immediate after event or program a minimum time between successive interrupts </li></ul><ul><li>Sounder drive provides audible feedback to simulate mechanical key clicks </li></ul><ul><li>Digital output (I2C with custom addressing) </li></ul><ul><li>16-pin QFN and TSSOP packages </li></ul><ul><li>-40°C to +85°C operating temperature range </li></ul>
  4. 4. Applications <ul><li>Appliances </li></ul><ul><li>PC Peripherals </li></ul><ul><li>Access Controls </li></ul><ul><li>MP3 Players </li></ul><ul><li>Remote Controls </li></ul><ul><li>Mobile Phones </li></ul>
  5. 5. Internal Block Diagram
  6. 6. Recommended System Connections
  7. 7. Proximity Sensor Selector Guide
  8. 8. Proximity Capacitor Model C = the capacitance in farads (F) A = the area of the plates in square meters (m2) d = the distance between the plates in meters (m) k = the dielectric constant of the material separating the plates ε 0= is the permittivity of free space (8.85 x 10-12 F/m)
  9. 9. Capacitive Sensing <ul><li>E-Field devices produce a voltage inversely proportional to the change in electrode capacitance </li></ul><ul><li>E-Field device has no memory or intelligence inside </li></ul><ul><li>Capacitive sensors respond to a change in physical stimulus </li></ul><ul><li>Used in many areas of automotive, industrial and consumer </li></ul><ul><li>Most popular application today is a capacitive touch sensing </li></ul><ul><li>Enables the elimination of mechanical buttons and sliders </li></ul><ul><li>Provide immunity to mechanical wear and tear </li></ul><ul><li>Gives greater flexibility for product designers </li></ul><ul><li>Reduction of BOM costs </li></ul>Proximity Capacitive Sensing E-Field
  10. 10. Capacitive Sensing Applications <ul><li>Touch Panel Keyboard </li></ul><ul><li>Water Level Measurement </li></ul><ul><li>Appliance Load Balancing </li></ul><ul><li>Ice Detection </li></ul><ul><li>User Presence awareness </li></ul><ul><li>Humidity Sensing </li></ul>Touch Panel Keyboard Electrodes 5 Keys, 2 Sliders, Wheel, Proximity Pad
  11. 11. Capacitive Touch Sensor Types
  12. 12. Development Tools KITMPR083EVM Description: Evaluation board to demonstrate key proximity sensor features. <ul><li>Sample electrode board demonstrates rotational sliders </li></ul><ul><li>Machined plastic cover for front panel non-contact touch evaluation </li></ul><ul><li>Access to all 8 electrodes </li></ul><ul><li>A Graphical User Interface that gives the user the ability to set many operational parameters </li></ul><ul><li>USB Connectivity </li></ul>
  13. 13. Proximity Touch Sensing Software
  14. 14. Additional Resource <ul><li>For ordering the MPR083, please click the part list or </li></ul><ul><li>Call our sales hotline </li></ul><ul><li>For additional inquires contact our technical service hotline </li></ul><ul><li>For more product information go to </li></ul><ul><ul><li>http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MPR083 </li></ul></ul>

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