detail product

Capacitive Touch Keypad

  • $7.31$5.92
  • Ex Tax: $5.92
  • Product Code: 10225
  • Availability: In Stock
8 touchkeys and 1 linear touch sensor

Features

  • Onboard 8 capacitive touchkeys and 1 linear capacitive touch sensor
  • Features TONTEK TonTouch touch pad detector IC TTP229-LSF, supports up to 16 keys with adjustable sensitivity and built-in LDO
  • The system re-calibrates automatically when all keys are not detected touch more than about 4 seconds
  • Configurable functions:
    • 8 keys OR 16 keys option
    • 8 separate outputs OR serial output
    • single-key OR multi-kye feature
    • Sampling rate and sampling length at sleep mode
    • Maximum key-on time

Specifications

  • Interface : I2C OR I/Os
  • Keys : 8/16
  • Sampling rate : 8Hz/64Hz
  • Human Body Mode : 6KV
  • Operating voltage : 2.4V-5.5V
  • Operating temperature : -40℃ to +85℃
  • Storage temperature : -50℃ to +125℃
  • Dimensions : 4.7CM × 6.8CM
  • Mounting holes size : 3 × 3MM

How to Use

  • After power-on have about 0.5sec stable-time. During the time do not touch the key pad, and all functions are disabled
  • 16 keys mode : short all the onboard jumpers, output via serial port, and the linear touch sensor is enabled
  • 8 keys mode : short the SLWPTM and WPSCT, open all the other jumpers, output via OUT0-OUT7

Applications

  • Consumer Products
  • Mechanical Switch/Button Replacement

Downloads

Development resources: demo codes, schematic, datasheets, etc.
www.waveshare.com/wiki/Capacitive_Touch_Keypad_(B)

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