TTP224 Capacitive Touch Module

TTP224/TTP224N TonTouchTM IC is a principle design using capacitive sensing touch IC, this IC built-in voltage regulator circuit to use the touch sensor, stable sensing method can be applied to a variety of electronic products. Panels media can is never the source material is completely designed for replacing traditional mechanical structure switch or ordinary button design. provide four touch input ports and four output ports directly. This capacitive touch sensor module uses the TTP224 integrated circuit, making it easy to add capacitive touch input to your project. It features 4 sensitive touch pads that make an ideal replacement for the old fashioned switches.

Specifications

• Operating voltage 2.4V ~ 5.5V
• Internal regulator circuit can function by external Option Select is enabled.
• Current @ VDD = 3V No load:
• Low power mode typical 2.5uA
• Typical 9uA fast mode
• @ VDD = 3V operating voltage:
• In fast mode KEY fastest response time to 100ms, the low-power mode to 200mS in TTP224
• In fast mode KEY fastest response time is under 60ms, low-power mode to 160mS in TTP224N
• Sensitivity can be adjusted for each KEY (0 ~ 50pF) by an external capacitor.
• Provide LPMB port select fast mode or low-power mode.
• Direct output mode, trigger mode, open drain output, CMOS active- high or active-low output, via
• TOG / AHLB / OD port selection.
• Provide MOT1, MOT0 output port select a valid key longest time: 120 seconds / 64 seconds / 16 seconds / infinity
• Automatic calibration function, when no key is touched, the system re-calibration cycle is about 4.0 seconds 
• On-board 4-key TTP224 capacitive touch sensor IC
• 4 status indicator LEDs
• Configurable output mode
• PCB Size: 35 x 29 mm