IQS229EV01-S

ProxSense® Series IQS229EV01 module user guide Single Channel Capacitive Proximity/Touch Controller for SAR Applications Operation Characteristics Integration The IQS229 will work in standalone mode (STD – LED outputs) or streaming mode (STRM), depending on a resistor placement. By default the module will be configured in standalone mode.  “OUT” (BLUE) LED will indicate an activation (crossing of the threshold)  “MOV_OUT” (GREEN) LED will indicate movement in small detectable amounts. Start the integration of the IQS229 by wiring the following into the intended application: 1. GND 2. CX (Electrode – wire or copper pad) 3. VDDHI On-board LEDs may be used for feedback, or the OUT and MOV_OUT pins may be taken to a microcontroller. MOV_OUT TIM OUT GND CX (Electrode) T0 VDDHI (1.8 - 3.3V) MT NC T1 User Configurable Options Four pins on the IQS229 are used for external configuration. Floating pins are the default configuration. The configuration is read at power-on or reset. To see how resistor straps are applied, see the next page. Threshold Level Selection L = LOGIC LOW, H = LOGIC HIGH,F = FLOAT T0, THR0 (pin 8) Start off by choosing a threshold. T0 is used to set a large jump in threshold and T1 is used to set smaller offsets. L Next choose the preferred sensitivity by strapping MT. L movement Then choose a no movement time-out. If no movement is detected in this time, the sensor will clear the activation. With each movement the IQS229 will reset the timer. Copyright © Azoteq 2013 L L F F F H H H L F H T1, THR1 (pin 6) F H L F H Corresponding Threshold Level 0 1 2 3 ◄More sensitive IQS229EV01 module user guide v1.2 4 5 6 7 8 Less sensitive► For more information visit www.azoteq.com ProxSense® Series Using resistor strap options Resistor straps are used to configure the device as shown below. It is recommended to use a 1MΩ resistor for this purpose. After power-up or reset the values will be read and each pin is written with the values that was read. This eliminates potential leakage current. Threshold Adjustment Less sensitive T0: Large steps TIM: Timer Adjustment More sensitive T1: Small Shorter timer steps Less sensitive Longer timer TIM (pin 1) No Movement sensitivity adjustment Time-out Low 60sec Float 3min High 10min More sensitive OT/OUT Function MT MOV_THR (pin 7) Standalone (default) 1MegΩ pull-down 1-Wire Streaming (debugging) 4.7kΩ Copyright © Azoteq 2013 More sensitive MT: Movement Less Sensitive Movement Threshold Low More sensitive Float Default High Less sensitive IQS229EV01 module user guide v1.2 For more information visit www.azoteq.com ProxSense® Series Schematic and assembly C2 18pF 1.0K MOV_THR 1 TIMER GND 7 8 THR0 6 THR1 MOV_OUT 10 9 OUT CRX0 VDDHI MOV_THR VREG 4 5 DS1 VREG VDDHI R2 MOV_OUT 330R TIMER C3 C4 C5 C6 THR0 100pF 1uF 1uF 100pF 2 3 LED outputs VDDHI U1 R1 CX WEJT81HC-23 Q1 BSS84LT1 1 OUT THR1 DS2 MOV_OUT TAB VSS OUT 11 2 R9 1.0K KPT-2012SRC IQS229S GND GND VDDHI Strap option inputs 3 Electrode & Decoupling GND GND VDDHI R3 1 R4 MOV_THR 2 R5 SOT TIMER 2 1 1 1 10K 1 MOV_OUT R6 SOT THR0 2 R7 SOT THR1 2 SOT R8 OUT pin: Standalone -> pull-down I2C debug -> pull-up GND Default: 1 Meg pull-down GND 3 3 3 3 2 3 OUT SOT Configuration pins: float -> mid-range pull-down -> more sensitive / shorter times pull-up -> less sensitive / longer times Figure 1 AZP408A05 Schematic Figure 2 AZP408A05 assembly Copyright © Azoteq 2013 IQS229EV01 module user guide v1.2 For more information visit www.azoteq.com ProxSense® Series 1.5mm 16mm 10mm 14mm 2.5mm Recommended landing pad 2mm Figure 3 Recommended AZP408A05 landing pad Programming The IQS229 has various one-time-programmable (OTP) fuse options. Information about these options are available on request and are only recommended for larger orders (>50k) or when in-circuit programming is an option after the SMT process. Connect the AZP408A05 to the CT210 as shown in Figure 4. Figure 4 AZP408A05 connection to CT210 for IQS229 fuse burn It is important to remove R2 when configuring the IQS229 OTP bits. The CT210 will configure the programming via I2C and the R2 / DS1 combination will cause the CLK line to become sluggish. Place R2 again after programming. Program the IQS229 using the Azoteq USBProg utility. Copyright © Azoteq 2013 IQS229EV01 module user guide v1.2 For more information visit www.azoteq.com ProxSense® Series Appendix A Contact Information USA Asia South Africa Physical 6507 Jester Blvd Address Bldg 5, suite 510G Austin TX 78750 USA Rm1725, Glittery City Shennan Rd Futian District Shenzhen, 518033 China 109 Main Street Paarl 7646 South Africa Postal Address 6507 Jester Blvd Bldg 5, suite 510G Austin TX 78750 USA Rm1725, Glittery City Shennan Rd Futian District Shenzhen, 518033 China PO Box 3534 Paarl 7620 South Africa Tel +1 512 538 1995 +86 755 8303 5294 ext 808 +27 21 863 0033 Fax +1 512 672 8442 +27 21 863 1512 Email kobusm@azoteq.com linayu@azoteq.com.cn info@azoteq.com Please visit www.azoteq.com for a list of distributors and worldwide representation. The following patents relate to the device or usage of the device: US 6,249,089 B1, US 6,952,084 B2, US 6,984,900 B1, US 7,084,526 B2, US 7,084,531 B2, EP 1 120 018 B2, EP 1 206 168 B1, EP 1 308 913 B1, EP 1 530 178 A1, ZL 99 8 14357.X, AUS 761094, HK 104 14100A, US13/644,558, US13/873,418 ® ® ® IQ Switch , SwipeSwitch™, ProxSense , LightSense™, AirButton and the logo are trademarks of Azoteq. The information in this Datasheet is believed to be accurate at the time of publication. Azoteq uses reasonable effort to maintain the information up-to-date and accurate, but does not warrant the accuracy, completeness or reliability of the information contained herein. All content and information are provided on a “as is” basis only, without any representations or warranties, express or implied, of any kind, including representations about the suitability of these products or information for any purpose. Azoteq disclaims all warranties and conditions with regard to these products and information, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property rights. Azoteq assumes no liability for any damages or injury arising from any use of the information or the product or caused by, without limitation, failure of performance, error, omission, interruption, defect, delay in operation or transmission, even if Azoteq has been advised of the possibility of such damages. The applications mentioned herein are used solely for the purpose of illustration and Azoteq makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Azoteq products are not authorized for use as critical components in life support devices or systems. No licenses to patents are granted, implicitly, express or implied, by estoppel or otherwise, under any intellectual property rights. In the event that any of the abovementioned limitations or exclusions does not apply, it is agreed that Azoteq’s total liability for all losses, damages and causes of action (in contract, tort (including without limitation, negligence) or otherwise) will not exceed the amount already paid by the customer for the products. Azoteq reserves the right to alter its products, to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and information, its products, programs and services at any time or to move or discontinue any contents, products, programs or services without prior notification. For the most up-to-date information and binding Terms and Conditions please refer to www.azoteq.com. WWW.AZOTEQ.COM info@azoteq.com Copyright © Azoteq 2013 IQS229EV01 module user guide v1.2 For more information visit www.azoteq.com