Azoteq IQ Switch IQS211AEV02 Quick Start Manual

IQS211AEV02 Quick start guide Page 1 of 2 All Rights Reserved. Revision 1.2 April 2017 IQS211AEV02 Quick start guide Single Channel Capacitive Proximity/Touch Controller with movement detection The IQS211A ProxSense® IC is a self-capacitance controller designed for applications where an awake/activate on proximity/touch function is required. The IQS211A offers ultra-low power options and uses movement detection for applications that require long term handling during proximity/touch. The device can be configured via OTP (One Time Programmable) bits. 1 Reference design and pin layout Figure 1.1 Pin Layout Figure 1.2 IQS211AEV02 Table 1.1 Pin-out description IQS211A in TSOT23-6 Pin Name Type Function 1 IO1 / SCL / 1WIRE Digital Input / Output Multifunction IO1 / SCL / 1WIRE (I2C Debug Clock signal / 1WIRE communication line) 2 VSS Signal GND 3 IO2 / SDA Digital Input / Output Multifunction IO2 / SDA (I2C Debug Data output) 4 VREG Regulator output Requires external capacitor 5 VDDHI Supply Input Supply:1.8V – 3.3V 6 Cx Sense electrode Connect to conductive area intended for sensor Figure 1.3 IQS211A Reference design 2 Ultra-low power configuration For IQS211A 08000000 TSR devices (OTP Bank4: bit3 = 1 for VREG damping) the IQS211AEV02 main board can be configured to connect IO2 to R3 = 680Ω grounding resistor. This resistance is mandatory for the ultra-low power operational mode. 211 OUT VSS MOV_OUT & RST/WAKE_IN Cx VDDHI VREG 1 2 3 6 5 4 211 MOV_OUT VSS CONFIG_IN Cx VDDHI VREG 1 2 3 6 5 4 211 OUT & MOV_PWM VSS Cx VDDHI 1 2 6 5 211 SCL VSS SDA Cx VDDHI VREG 1 2 3 6 5 4 211 OUT & MOV_PWM VSS Cx VDDHI 1 2 6 5 000 -I2C 001 -Movement/Touch 010 - Movement/ Prox 011 - Movement/Input 100 - 1Wire + Mov 101 - 1Wire Short+Rdy 110 - I2C with reset indication 000 -I2C 110 -I2C with reset indication 001 -Movement/Touch (OUT) 010 - Movement/ Prox (OUT) 011 – Movement/Input 001 -Movement/Touch (OUT) 010 - Movement/ Prox (OUT) 211 OUT VSS CONFIG_IN Cx VDDHI VREG 1 2 3 6 5 4 xxx – OUT / Input xxx – OUT&MOV / Rst&Wake xxx – OUT&MOV / Input IQS 211A IO1 / SCL / 1WIRE VSS IO2 / SDA Cx VDDHI VREG 1 2 3 6 5 4 GND C1 1uF GND C2 100pF C4 100pF C3 1uF GND VDDHI GND VREG CX R1 470R IO1/SCL/DATA IO2/SDA/EVENT VDDHI DS0 DS1 IO2/SDA/EVENT IO1/SCL/DATA GREEN BLUE IO2/SDA/EVENT 3 IO1/SCL/1WIRE 1 VREG 4 CX 6 GND 2 VDDHI 5 U1 IQS211A C5 10pF GND R4 470R R5 470R VDDHI R7 4k7 VDDHI R6 4k7 IO1/SCL/DATA IO2/SDA/EVENT R2 40R

IQS211EV02 Quick start guide Page 2 of 2 All Rights Reserved. Revision 1.2 April 2017 Figure 2.1 IQS211A reference design (Ultra-low power) 3 Default UI Different UI’s can be selected in the IQS211A 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 IQS211A can be configured in different variations. Please note when settings are programmed it is permanent. GND C1 1uF GND C2 100pF C4 100pF C3 1uF GND VDDHI GND VREG CX R1 470R IO1/SCL/DATA IO2/SDA/EVENT VDDHI DS1 IO1/SCL/DATA IO2/SDA/EVENT 3 IO1/SCL/1WIRE 1 VREG 4 CX 6 GND 2 VDDHI 5 U1 IQS211A C5 10pF GND R5 470R R4 680R IO2 GND R4 required when “VREG damping on IO2” is selected for lowest power consumption VDDHI R5 10k IO1/SCL/DATA R2 40R Set S1 to downward position for 1 wire communication OR DMP (current dump) for ultra-low power consumption. Set S1 to upward position for I2C and programming Place a jumper pin for a halt charge / reseed input command on IO1 (OTP option) Place a jumper pin to connect IO2 to R3 = 680Ω resistor for DMP option on S1 IQS211AEV02 Main PCB

Azoteq: IQS211AEV02-S