Azoteq ProxSense Series User manual

IQ Switch®
ProxSense®Series
Copyright © Azoteq (Pty) Ltd 2022.
IQS211BEV02 Quick start guide
Page 1 of 2
All Rights Reserved.
Revision 1.0
November 2022
IQS211BEV02 Quick start guide
Single Channel Capacitive Proximity/Touch Controller with movement detection
The IQS211B ProxSense®IC is a self-capacitance controller designed for applications where
an awake/activate on proximity/touch function is required. The IQS211B 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 IQS211BEV02
Table 1.1 Pin-out description
IQS211B 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 IQS211B Reference design
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
RST/WAKE_IN
Cx
VDDHI
VREG
1
2
3
6
5
4
211
SCL
VSS
SDA
Cx
VDDHI
VREG
1
2
3
6
5
4
211
OUT & MOV_PWM
VSS
CONFIG_IN
Cx
VDDHI
VREG
1
2
3
6
5
4
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
211
1Wire
VSS
MOV_OUT
Cx
VDDHI
VREG
1
2
3
6
5
4
001 -Movement/Touch (OUT)
010 - Movement/ Prox (OUT)
100 - 1Wire + Mov 101 - 1Wire Short+Rdy
211
1Wire
VSS
RDY
Cx
VDDHI
VREG
1
2
3
6
5
4
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
IQS
211B
IQS211B

IQ Switch®
ProxSense®Series
Copyright © Azoteq (Pty) Ltd 2022
IQS211BEV02 Quick start guide
Page 2 of 2
All Rights Reserved.
Revision 1.0
November 2022
2 Ultra-low power configuration
For IQS211B 08000000 TSR devices (OTP Bank4: bit3 = 1 for VREG damping) the
IQS211BEV02 main board can be configured to connect IO2 to R3 = 680Ω grounding resistor.
This resistance is mandatory for the ultra-low power operational mode.
Figure 2.1 IQS211B reference design (Ultra-low power)
3 Default UI
Different UI’s can be selected in the IQS211B 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 IQS211B can be configured in different variations. Please note when
settings are programmed it is permanent.
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
IQS211BEV02 Main PCB
IQS211B

Mouser Electronics
Authorized Distributor
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IQS211BEV02-S