Azoteq IQ Switch ProxSense Series Quick Start Manual
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Brand: Azoteq
Category: Computer Hardware , Controller , Kitchen Appliances , Motherboard , Relays
Type: Quick start manual
Model: Azoteq IQ Switch IQS231EV02 , Azoteq IQ Switch - ProxSense Series
Pages: 4
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2
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IQ Switch
®
ProxSense
®
Series
Copyright © Azoteq (Pty) Ltd 2015.
IQS231EV02 Quick start guide
Page 1 of 3
All Rights Reserved.
Revision 1.0
August 2015
IQS231EV02 Quick start guide
Single Channel Capacitive Proximity/Touch/SAR Controller with movement detection
The IQS231ProxSense
®
IC is a self-capacitance controller designed for SAR applications
where a reliable proximity detection function is required along with human and inanimate
object distinction. The IQS231 uses quick release and movement detection to achieve this.
The IQS231 operates standalone or I
2
C can be configured via OTP (One Time
Programmable) bits.
1 Reference design and pin layout
Figure 1.1 IQS231EV02
Figure 1.2 TSOT23-6 Pin layout
Table 1.1 Multifunction pin descriptions
IQS231 in TSOT23-6
Pin
Name
Type
Function
1
PRIMARY I/O
Digital Input/Output
Multifunction IO1 / SCL (I
2
C Clock signal)
2
VSS
Signal GND
3
SECONDARY
I/O / Tx
Digital Input/Output
Multifunction IO2 / SDA (I
2
C Data output)
/ Tx
4
VREG
Regulator output
Requires external capacitor
5
VDDHI
Supply Input
Supply:1.75V – 3.6V
6
Cx
Sense electrode
Connect to conductive area intended for
sensor
Table 1.2 Pin-out description
Multifunction pin name
Multifunction pin option
IO1
Proximity output / Proximity output with heartbeat
IO2
Sensitivity input / Synchronization input /
Movement output / Touch output
IQS
231
IO1 / SCL
VSS
IO2 / SDA / Tx
Cx / Rx
VDDHI
VREG
1
2
3
6
5
4