IQS227/228ASEV02-S

IQ Switch® ProxSense® Series IQS227/8ASEV02 Quick start guide Single Channel Capacitive Proximity/Touch Controllerwith movement detection The IQS227/8AS ProxSense® IC is a self-capacitance controller designed for applications where an awake/activate on proximity/touch function is required. The IQS227/8AS operates standalone or I2C can be configured via OTP (One Time Programmable) bits. 1 Reference design and pin layout TOUT 1 VSS 2 POUT 3 IQS 227AS 228AS 6 Cx 5 VDDHI 4 VREG Figure 1.2 IQS227/8ASEV02 Figure 1.1 IQS227/8AS pinout IQS227/8AS in TSOT23-6 Pin 1 2 3 4 5 6 Name TOUT VSS POUT VREG VDDHI Cx Type Digital Input / Output Signal GND Digital Input / Output Regulator output Supply Input Sense electrode Function Touch output / General output Multifunction proximity output / control input Requires external capacitor Supply:1.8V – 3.3V Connect to conductive area intended for sensor 2 IQS227/8AS reference design Figure 2.1 Copyright © Azoteq (Pty) Ltd 2017. All Rights Reserved. IQS277/8AS layout on AZP451B01 IQS277/8ASEV01 Quick start guide Revision 1.2 Page 1 of 2 April 2017 IQ Switch® ProxSense® Series 3 Configuration options The IQS227/8ASEV02 comes with 3 different coloured EV01 module boards each with their own OTP configuration. Please refer to the leaflet inside the EV-kit box as shown on the left. Solder mask colour GREEN BLUE BLACK IC configuration IQS227AS 000C1D0C TS R IQS228AS 000C1D00 TS R IQS227AS 00041E0C TS R IQS228AS 00041700 TS R IQS227AS 00000008 TS R IQS228AS 0000000C TS R IQS227/8ASEV02 Main PCB Connect CT210 ribbon cable Place jumper to connect extra pads to Cx Place jumper to connect extra pads to GND  2-WIRE / PGM: I2C comms or OTP programming  1-WIRE: 1-WIRE comms on TOUT/SCL pin. o Requires OTP configuration 4 Default UI Different UI’s can be selected in the IQS2227/8AS GUI and can then be selected to run in standalone mode. The GUI is available for download from the Software & Tools section of azoteq.com and the CT210 (sold separately) is used in conjunction with the GUI to select the different UI’s and settings. Using USBProg the IQS227/8AS can be configured in different variations. Please note when settings are programmed it is permanent. Copyright © Azoteq (Pty) Ltd 2017. All Rights Reserved. IQS277/8ASEV01 Quick start guide Revision 1.2 Page 2 of 2 April 2017