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TTP229-BSF Dataheets PDF



Part Number TTP229-BSF
Manufacturers TONTEK
Logo TONTEK
Description 16 KEYS OR 8 KEYS TOUCH PAD DETECTOR IC
Datasheet TTP229-BSF DatasheetTTP229-BSF Datasheet (PDF)

Preliminary TTP229-BSF TonTouchTM 16 KEYS OR 8 KEYS TOUCH PAD DETECTOR IC GENERAL DESCRIPTION The TTP229-BSF TonTouchTM IC is capacitive sensing design specifically for touch pad controls. The device built in regulator for touch sensor. Stable sensing method can cover diversity conditions. Human interfaces control panel links through non-conductive dielectric material. The main application is focused at replacing of the mechanical switch or button. The ASSP can independently handle the 8 touc.

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Preliminary TTP229-BSF TonTouchTM 16 KEYS OR 8 KEYS TOUCH PAD DETECTOR IC GENERAL DESCRIPTION The TTP229-BSF TonTouchTM IC is capacitive sensing design specifically for touch pad controls. The device built in regulator for touch sensor. Stable sensing method can cover diversity conditions. Human interfaces control panel links through non-conductive dielectric material. The main application is focused at replacing of the mechanical switch or button. The ASSP can independently handle the 8 touch pads or up to 16 touch pads. FEATURES ƒ Operating voltage:2.4V~5.5V ƒ Built-in regulator ƒ Stand-by current At 3V, and sleep mode slow sampling rate 8Hz: => Typical 2.5uA for 16 input keys => Typical 2.0uA for 8 input keys ƒ Provides to set 8 direct keys or 16 direct keys by option ƒ Provides to set 8 separate outputs only for 8 direct input keys mode ƒ Has a 2-wires serial output interface, both can use for 8 and 16 direct input keys mode ƒ 8 separate outputs can select output driving types by option (CMOS/OD/OC with active high/low) ƒ 2-wires serial interface can select active high or low by option ƒ Offer multi-key or single-key feature by option ƒ Provides two kinds of sampling rate that slow sampling rate 8Hz and fast sampling rate 64Hz at sleep mode ƒ Have the maximum key-on time about 80sec by pin option ƒ Sensitivity can adjust by the capacitance(1~50pF) outside ƒ After power-on have about 0.5sec stable-time, During the time do not touch the key pad, and all functions are disabled ƒ Auto calibration for environment changing And the re-calibration period is about 4.0sec, when all keys are not activated for fixed time APPLICATION ƒ Wide consumer products ƒ Button key replacement 09’/12/22 Page 1 of 16 Ver : 1.1 BLOCK DIAGRAM SENADJ0 TP0 TP1 TP2 TP3 SENADJ1 TP4 TP5 TP6 TP7 Sense Port and Detecting Circuit SLPSENA SLPSENB Wake-up Detecing Control Circuit TEST Function Option Control Circuit Regulator Circuit Preliminary Timing Counter and Key Scanning and Function Control Circuit System Oscillator Circuit System Power On Circuit TTP229-BSF TonTouchTM Output Buffer & Sense Input Circuit SENADJ2 TP8 TP9 TP10 TP11 TP12 TP13 TP14 TP15 SENADJ3 Serial Output Buffer and Control Circuit SDO SCL PACKAGE CONFIGURATION TP3 TP2 SENADJ0 TP1 TP0 TP15 TP14 SENADJ3 TP13 TP12 SDO SCL SLPSENB 1 28 2 27 3 26 4 5 TTP229-B 25 24 6 (SSOP-28) 23 7 22 8 21 9 20 10 19 11 18 12 17 13 16 14 15 SLPSENA VSS VDD TP4 TP5 SENADJ1 TP6 TP7 TEST TP8 TP9 SENADJ2 TP10 TP11 09’/12/22 Page 2 of 16 Ver : 1.1 Preliminary TTP229-BSF TonTouchTM PIN DESCRIPTION Pin No. Pin Name Share Pin I/O Type Pin Description 1 TP3 SKMS1 I/O Touch pad input pin(KEY-3) Key action function option-1(Single-key/Multi-key) Default is all single-key 2 TP2 KYSEL I/O Touch pad input pin(KEY-2) Key number function option(8-keys/16-keys) Default is 8-keys 3 NC 4 SENADJ0 I/O Touch pad TP0~3 sensitivity adjust common pin 5 TP1 SAHL I/O Touch pad input pin(KEY-1) Output type function option(Active High/Low) Default is active-high for TPQ0~7, active-low for 2-wires serial type(SCL and SDO) 6 TP0 OPDEN I/O Touch pad input pin(KEY-0) Output type function option(CMOS/OD/OC for 8-keys) Default is CMOS 7 TP15 TPQ7 I/O/OD Touch pad input pin(KEY-15) 8-keys direct output pin(TPQ7) 8 TP14 TPQ6 I/O/OD Touch pad input pin(KEY-14) 8-keys direct output pin(TPQ6) 9 SENADJ3 I/O Touch pad TP12~15 sensitivity adjust common pin 10 TP13 TPQ5 I/O/OD Touch pad input pin(KEY-13) 8-keys direct output pin(TPQ5) 11 TP12 TPQ4 I/O/OD Touch pad input pin(KEY-12) 8-keys direct output pin(TPQ4) 12 SDO O Data pin for the 2-wires serial output, option active Low/High by TP1 13 SCL I Serial clock input pin for serial type It can be set active Low/High by TP1 14 SLPSENB I/O Sleep mode sensitivity adjustment pin for group-B(TP8~15) 15 TP11 TPQ3 I/O/OD Touch pad input pin(KEY-11) 8-keys direct output pin(TPQ3) 16 TP10 TPQ2 I/O/OD Touch pad input pin(KEY-10) 8-keys direct output pin(TPQ2) 17 SENADJ2 I/O Touch pad TP8~11 sensitivity adjust common pin 18 TP9 TPQ1 I/O/OD Touch pad input pin(KEY-9) 8-keys direct output pin(TPQ1) 19 TP8 TPQ0 I/O/OD Touch pad input pin(KEY-8) 8-keys direct output pin(TPQ0) 20 TEST I-PL Only for test 09’/12/22 Page 3 of 16 Ver : 1.1 Preliminary TTP229-BSF TonTouchTM Pin No. Pin Name Share Pin I/O Type Pin Description 21 TP7 SKSRT I/O Touch pad input pin(KEY-7) Maximum key-on time function option(Infinite/80sec) Default is infinite 22 TP6 SLWPTM I/O Touch pad input pin(KEY-6) Sleep mode sampling length function option(4.0/2.0mS) Default is 4.0ms 23 SENADJ1 I/O Touch pad TP4~7 sensitivity adjust common pin 24 TP5 WPSCT I/O Touch pad input pin(KEY-5) Sampling rate at sleep mode function option(8Hz/64Hz) Default is 8Hz 25 TP4 SKMS0 I/O Touch pad input pin(KEY-4) Key action function option-0(Single-key/Multi-key) Default is all single-key 26 VDD P Positive power suppl.


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