Azoteq IQ Switch ProxSense Series Quick Start Manual

IQS211AEV02 Quick start guide
Single Channel Capacitive Proximity/Touch Controller with movement detection
The IQS211A ProxSense
an awake/activate on proximity/touch function is required. The IQS211A 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

1
IO1 / SCL / 1WIRE
2
VSS
3
IO2 / SDA
Figure 1.1
000 -I2C
110 -I2C with reset indication
Pin Name
1
SCL
1 IO1 / SCL / 1WIRE
2 VSS
2
VSS
3 IO2 / SDA
4 VREG
3
SDA
5 VDDHI
6 Cx
VDDHI
R2
40R
U1
5
VDDHI
1
OUT
IO2/SDA/EVENT
2
2
VSS
GND
C3 C4
IQS211A
1uF 100pF
3
MOV_OUT &
RST/WAKE_IN
GND GND
1
OUT

2 Ultra-low power configuration

2
VSS
For IQS211A 08000000 TSR devices (OTP Bank4: bit3 = 1 for VREG damping) the
3
CONFIG_IN
IQS211AEV02 main board can be configured to connect IO2 to R3 = 680Ω grounding resistor.
This resistance is mandatory for the ultra-low power operational mode.
Copyright © Azoteq (Pty) Ltd 2017.
All Rights Reserved.
1
OUT & MOV_PWM
2
VSS
All manuals and user guides at all-guides.com
IQ Switch
ProxSense
®
IC is a self-capacitance controller designed for applications where
6 Cx
IQS
5 VDDHI
211A
4 VREG
Pin Layout
Table 1.1 Pin-out description
IQS211A in TSOT23-6
Type
6 Cx
Digital Input / Output
211
Signal GND
5 VDDHI
Digital Input / Output
Regulator output
4 VREG
Supply Input
Sense electrode
001 -Movement/Touch (OUT) 001 -Movement/Touch (OUT)
010 - Movement/ Prox (OUT) 010 - Movement/ Prox (OUT)
6
CX
6 Cx
IO1/SCL/DATA
1
IO1/SCL/1WIRE
3 IO2/SDA/EVENT
211
4 VREG
5 VDDHI
VREG
GND
C1 C2
4 VREG
1uF 100pF
xxx – OUT / Input
GND GND
Figure 1.3 IQS211A Reference design
6 Cx
211
5 VDDHI
4 VREG
xxx – OUT&MOV / Rst&Wake
IQS211AEV02 Quick start guide
6 Cx
211
5 VDDHI
®
®
Series
Figure 1.2 IQS211AEV02
000 -I2C
Function
001 -Movement/Touch
Multifunction IO1 / SCL / 1WIRE (I
010 - Movement/ Prox
signal / 1WIRE communication line)
011 - Movement/Input
100 - 1Wire + Mov
Multifunction IO2 / SDA (I
101 - 1Wire Short+Rdy
Requires external capacitor
Supply:1.8V – 3.3V
110 - I2C with reset indication
Connect to conductive area intended for sensor
VDDHI
011 – Movement/Input
R4
R1
470R
1
MOV_OUT
470R
CX
C5
10pF R5
211
2
VSS
470R
VDDHI
3
CONFIG_IN
R6
4k7
IO1/SCL/DATA
xxx – OUT&MOV / Input
Revision 1.2
1
OUT & MOV_PWM
211
2
VSS
2
C Debug Clock
2
C Debug Data output)
DS0
IO2/SDA/EVENT
GREEN
6 Cx
DS1
IO1/SCL/DATA
BLUE
5 VDDHI
VDDHI
4 VREG
R7
4k7
IO2/SDA/EVENT
Page 1 of 2
April 2017
6 Cx
5 VDDHI