2. Soldering the headers Before using your click board , make sure to solder 1x8 male headers to both left and right side of the board. Two 1x8 male headers are included with the board in the package. 1 TouchKey click 2 3 4. Essential features TouchKey click offers a replacement for standard mechanical switches and buttons. It can be used in a wide variety of applications and under diverse conditions, but perhaps the most interesting feature is Turn the board upside down so that Turn the board upward again. Make sure that the keys can be toggled even through a the bottom side is facing you upwards. to align the headers so that they are layer of glass, paper, or similar non-isolating Place shorter pins of the header into the perpendicular to the board, then solder the materials. The response time is just 100mS appropriate soldering pads. pins carefully. at fast mode and 200mS at low power mode. 3. Plugging the board in 1. Introduction click Once you have soldered the headers your TouchKey click has four capacitive pads board is ready to be placed into the desired BOARD powered by TTP224, a touchpad detector IC. mikroBUS socket. Make sure to align the www.mikroe.com The board outputs an interrupt singnal for cut in the lower-right part of the board with each pad: OUTA, OUTB, OUTC and OUTD (in the markings on the silkscreen at the place of default mikroBUS RST, AN, PWM mikroBUS socket. If all the TouchKey click manual ver 1.00 and INT pins, respectivelly, respectively). pins are aligned correctly, TouchKey click is designed to work either push the board all the way with a 3.3V or 5V power supply. into the socket. 0100000080276LPMB MOT0 TOG OD AHLB SM 8. Code examples 5. Schematic VCC VCC VCC Once you have done all the necessary 1 1 1 preparations, its time to get your click board 2 2 2 J1 J2 J3 up and running. We have provided examples Key1 for mikroC , mikroBasic and mikroPascal 1 KEY1 compilers on our Libstock website. Just C1 download them and you are ready to start. 27pF VCC Key2 PWR SEL. U1 VCC VCC KEY1 1 16 OUTA TP0 TPQ0 KEY2 2 15 OUTB TP1 TPQ1 .com 1 KEY2 KEY3 3 14 OUTC TP2 TPQ2 C2 KEY4 4 13 OUTD TP3 TPQ3 R1 27pF OUTB OUTC 2K2 AHLB 5 12 SM AN PWM AHLB SM OUTA OUTD RST INT Key3 6 11 OD CS TX VDD OD SCK RX 9. Support TOG 7 10 MISO SCL TOG VSS SDA MOSI 1 KEY3 LPMB 8 9 MOT0 +3.3V +5V LPMB MOT0 PWR GND GND TTP224 C3 C5 MIKROBUS DEVICE CONN. 27pF 100nF MikroElektronika offers free tech support Key4 (www.mikroe.com/support) until the end of the products lifetime, so if something goes 1 KEY4 wrong, were ready and willing to help C4 27pF 1 1 1 2 2 2 J4 J5 J6 6. Dimensions 7. SMD jumpers 10. Disclaimer MikroElektronika assumes no responsibility DEFAULT SECONDARY mm mils or liability for any errors or inaccuracies Fast Low power LPMB Direct Toggle that may appear in the present document. TOG LENGTH 57.15 2250 High output Low output AHLB Specification and information contained in WIDTH 25.4 1000 Infinite 16 Sec. MOT0 the present schematic are subject to change on time Max on time CMOS active Open drain OD HEIGHT* 3.2 126 at any time without notice. SM Multi-key Single-key 57.15 / 2250 mils * without headers TouchKey click has three jumpers for putting Copyright 2015 MikroElektronika. the TTP224 IC into different operating modes. All rights reserved. 25.4 mm / 1000 mils 1 2 3