IQS211AEV02-S Azoteq

IQ Switch ProxSense Series 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 1 6 Cx IO1 / SCL / 1WIRE IQS 2 5 VDDHI VSS 211A 3 4 VREG IO2 / SDA Figure 1.1 Pin Layout Figure 1.2 IQS211AEV02 Table 1.1 Pin-out description 000 -I2C IQS211A in TSOT23-6 000 -I2C 110 -I2C with reset indication Pin Name Type Function 001 -Movement/Touch 2 1 6 Cx SCL Multifunction IO1 / SCL / 1WIRE (I C Debug Clock 010 - Movement/ Prox 1 IO1 / SCL / 1WIRE Digital Input / Output signal / 1WIRE communication line) 011 - Movement/Input 2 VSS Signal GND 2 5 VDDHI VSS 211 2 100 - 1Wire + Mov 3 IO2 / SDA Digital Input / Output Multifunction IO2 / SDA (I C Debug Data output) 101 - 1Wire Short+Rdy 4 VREG Regulator output Requires external capacitor 3 4 VREG SDA 5 VDDHI Supply Input Supply:1.8V 3.3V 110 - I2C with reset indication 6 Cx Sense electrode Connect to conductive area intended for sensor 000011 --MMoovveemmeenntt//TToouucchh ((OOUUTT)) VDDHI VDDHI 011 Movement/Input R2 001100 -- MMoovveemmeentnt// PPrroxox ((OOUUTT)) DS0 40R IO2/SDA/EVENT U1 R4 GREEN R1 5 6 VDDHI CX 470R 470R 1 6 Cx OUT 1 6 Cx MOCXV OUT IO1/SCL/DATA 1 IO1/SCL/1WIRE DS1 3 IO2/SDA/EVENT C5 IO2/SDA/EVENT IO1/SCL/DATA 10pF R5 BLUE 2 4 VREG GND VREG 2 5 VDDHI 2 5 VDDHI VSS VSS 470R 211 211 C3 C4 IQS211A 1uF 100pF GND VDDHI VDDHI C1 C2 3 4 VREG CONFIG IN 3 4 VREG MOV OUT & 1uF 100pF RST/WAKE IN R6 R7 4k7 4k7 GND GND GND GND xxx OUT / Input IO2/SDA/EVENT IO1/SCL/DATA 1 Figure 1.36 CxIQS211A Reference design OUT 2 Ultra-lowVSS po2 wer con5figVDurDHIation 211 For IQS211A 08000000 TSR devices (OTP Bank4: bit3 = 1 for VREG damping) the 3 4 VREG CONFIG IN IQS211AEV02 main board can be configured to connect IO2 to R3 = 680 grounding resistor. This resistance is mandatory for the ultra-low power operational mode. xxx OUT&MOV / Input xxx OUT&MOV / Rst&Wake Copyright Azoteq (Pty) Ltd 2017. IQS211AEV02 Quick start guide Page 1 of 2 All Rights Reserved. Revision 1.2 April 2017 OUT & MOV PWM 1 6 Cx OUT & MOV PWM 1 6 Cx 2 5 VDDHI VSS 2 5 VDDHI VSS 211 211 RST/WAKE IN 3 4 VREG 3 4 VREG CONFIG IN 101 - 1Wire Short+Rdy 100 - 1Wire + Mov 1 6 Cx 1 6 Cx 1Wire 1Wire 2 5 VDDHI 2 5 VDDHI VSS VSS 211 211 3 4 VREG 3 4 VREG MOV OUT RDY IQ Switch ProxSense Series IQS211AEV02 Main PCB Set S1 to upward position for I2C and programming Set S1 to downward position for 1 wire communication OR DMP (current dump) for ultra-low power consumption. Place a jumper pin to connect IO2 to R3 = 680 resistor for DMP option on S1 Place a jumper pin for a halt charge / reseed input command on IO1 (OTP option) VDDHI VDDHI R2 DS1 40R U1 IO1/SCL/DATA R5 R1 5 6 VDDHI CX 470R 470R CX 1 IO1/SCL/DATA IO1/SCL/1WIRE 3 IO2/SDA/EVENT C5 IO2/SDA/EVENT 10pF VREG 2 4 GND VREG C3 C4 IQS211A IO2 1uF 100pF VDDHI GND R4 required when C1 C2 1uF 100pF VREG damping R4 R5 680R on IO2 is selected 10k for lowest power consumption IO1/SCL/DATA GND GND GND GND GND Figure 2.1 IQS211A reference design (Ultra-low power) 3 Default UI Different UIs 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 UIs and settings. Using USBProg the IQS211A can be configured in different variations. Please note when settings are programmed it is permanent. Copyright Azoteq (Pty) Ltd 2017 IQS211EV02 Quick start guide Page 2 of 2 All Rights Reserved. Revision 1.2 April 2017