Azoteq ProxSense Series Quick Start Manual

Single Channel Capacitive Proximity/Touch Controller with movement detection
The IQS211B ProxSense
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

IO1 / SCL / 1WIRE
VSS
IO2 / SDA
Figure 1.1
Pin Name
SCL
1 IO1 / SCL / 1WIRE
VSS
2 VSS
3 IO2 / SDA
4 VREG
SDA
5 VDDHI
6 Cx
OUT
VSS
IQS211B
MOV_OUT &
RST/WAKE_IN
OUT
VSS
CONFIG_IN
Copyright © Azoteq (Pty) Ltd 2022.
All Rights Reserved.
OUT & MOV_PWM
VSS
ProxSense
IQS211BEV02 Quick start guide
®
IC is a self-capacitance controller designed for applications where
1 6 Cx
IQS
IQS
2 5 VDDHI
211A
211B
3 4 VREG
Pin Layout
Table 1.1
000 -I2C
110 -I2C with reset indication
IQS211B in TSOT23-6
Type
1 6 Cx
Digital Input / Output
211
2 5 VDDHI
Signal GND
Digital Input / Output
Regulator output
3 4 VREG
Supply Input
Sense electrode
001 -Movement/Touch (OUT) 001 -Movement/Touch (OUT)
010 - Movement/ Prox (OUT) 010 - Movement/ Prox (OUT)
1 6 Cx
211
2 5 VDDHI
3 4 VREG
xxx – OUT / Input
1 6 Cx
Figure 1.3 IQS211B Reference design
211
2 5 VDDHI
3 4 VREG
xxx – OUT&MOV / Rst&Wake
1 6 Cx
211
2 5 VDDHI
®
IQ Switch
®
Series
Figure 1.2
Pin-out description
Function
Multifunction IO1 / SCL / 1WIRE (I
signal / 1WIRE communication line)
Multifunction IO2 / SDA (I
Requires external capacitor
Supply:1.8V – 3.3V
Connect to conductive area intended for sensor
MOV_OUT
VSS
CONFIG_IN
IQS211BEV02 Quick start guide
Revision 1.0
OUT & MOV_PWM
VSS
IQS211BEV02
000 -I2C
001 -Movement/Touch
010 - Movement/ Prox
2
C Debug Clock
011 - Movement/Input
100 - 1Wire + Mov
2 C Debug Data output)
101 - 1Wire Short+Rdy
110 - I2C with reset indication
011 – Movement/Input
1 6 Cx
211
2 5 VDDHI
3 4 VREG
xxx – OUT&MOV / Input
1 6 Cx
211
2 5 VDDHI
Page 1 of 2
November 2022