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TTP225 Datasheet(PDF) 3 Page - Tontek Design Technology |
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TTP225 Datasheet(HTML) 3 Page - Tontek Design Technology |
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3 / 15 page ![]() Preliminary TTP225 TonTouchTM 09’/08/25 Page 3 of 15 Ver : 1.3 BLOCK DIAGRAM FOR KEY-MATRIX MODE : TEST (3*3 or 2*4) OPS1 OPS0=0 Q5(SCN5) Q4(SCN4) Q3(SCN3) Q2(SCN2) Q0(SCN0) Q1(SCN1) Sensitivity selection OPW1 OPW0 OPST OPT1 OPT0 DV Key-on timing driver & selection 8 outputs key de-bounce 8 Sets SLSE5 SLSE4 SLSE3 SLSE2 SLSE1 SLSE0 OSC1 control System timing Sensor OSC2 Key Detection I7 I6 I5 I4 I3 I2 I1 I0 Reference OSC1 Switch Scan & Inputs |
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