Azoteq ProxSense IQS231AEV02 Quick Start Manual

Single Channel Capacitive Proximity/Touch/SAR Controllerwith movement detection
The IQS231A ProxSense
where a reliable proximity detection function is required along with human and inanimate
object distinction. The IQS231A uses quick release and movement detection to achieve this.
The IQS231A operates standalone or I
Programmable) bits. The IC is also available in DFN10 (3x3) package and WLCSP (0.9x1.5).

1 Reference design and pin layout

IO1 / SCL
VSS
IO2 / SDA
Figure 1.1 TSOT23-6 Pin layout
Pin Name
1 IO1 / SCL
2 VSS
3 IO2 / SDA
4 VREG
5 VDDHI
6 Cx
Figure 1.2 IQS231AEV02
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IQS231AEV02 Quick start guide
®
IC is a self-capacitance controller designed for SAR applications
1 6 Cx
IQS
2 5 VDDHI
231A
3 4 VREG
Table 1.1
IQS231A in TSOT23-6
Type
Digital Input / Output
Signal GND
Digital Input / Output
Regulator output
Supply Input
Sense electrode
®
IQ Switch
®
Series
2
C can be configured via OTP (One Time
Figure 1.2 IQS231AEV01
Pin-out description
Function
Multifunction IO1 / SCL (I
Multifunction IO2 / SDA (I
Requires external capacitor
Supply:1.8V – 3.3V
Connect to conductive area intended for sensor
Table 1.2 Multifunction pin
Multifunction
pin name
IO1
IO2
IQS231AEV02 Quick start guide
Revision 1.2
2
C Clock signal)
2
C Data output)
descriptions
Multifunction pin option
Proximity output / Proximity
output with heartbeat
Sensitivity input /
Synchronization input /
Movement output / Touch
output
Page 1 of 2
April 2017