IQ Switch
®
ProxSense
®
Series
Copyright © Azoteq (Pty) Ltd 2017.
IQS277/8ASEV01 Quick start guide
IQS227/8ASEV02 Quick start guide
Single Channel Capacitive Proximity/Touch Controllerwith movement detection
The IQS227/8AS ProxSense
®
IC is a self-capacitance controller designed for applications
where an awake/activate on proximity/touch function is required. The IQS227/8AS
operates standalone or I
2
C can be configured via OTP (One Time Programmable) bits.
1 Reference design and pin layout
Figure 1.1 IQS227/8AS pinout
Figure 1.2 IQS227/8ASEV02
Touch output / General output
Multifunction proximity output / control input
Requires external capacitor
Connect to conductive area intended for sensor
2 IQS227/8AS reference design
Figure 2.1 IQS277/8AS layout on AZP451B01
IQS
227AS
228AS
TOUT
VSS
POUT
Cx
VDDHI
VREG
1
2
3
6
5
4