IQ Switch
®
ProxFusion
®
Series
IQS624 Datasheet
Combination sensor including: Hall-effect rotation sensing, along with dual-channel
capactive proximity/touch sensing, or single-channel inductive sensing.
The IQS624 ProxFusion
®
IC is a multifunctional capacitive and Hall-effect sensor designed for
applications where any or all of the technologies may be required. The two Hall-effect sensors
calculate the angle of a magnet rotating parallel with the sensor. The sensor is fully I
2
C compatible
and on-chip calculations enable the IC to stream the current angle of the magnet without extra
calculations.
Features
•
Hall effect angle sensor:
o
On-chip Hall plates
o
360° Absolute Output
o
1° Resolution*, calculated on chip
o
Relative rotation angle.
o
Detect movement and the direction of
movement.
o
Raw data: can be used to calculate
degrees on external processor.
o
Wide operational range
o
No external components required
Partial auto calibration:
o
Continuous auto-calibration,
compensation for wear or small
displacements of the sensor or magnet.
o
Flexible gain control
o
Automatic Tuning Implementation
(ATI)
– Performance enhancement (10 bit).
Capacitive sensing
o
Full
auto-tuning
with
adjustable
sensitivity
o
2pF to 200pF external capacitive load
capability
Inductive sensing
o
Only external
sense coil
required (PCB
trace)
•
Multiple
integrated UI
DFN10
WLCSP-9
o
Proximity / Touch
Representations only, not actual markings
o
Proximity wake-up
o
Event mode
o
Wake Hall sensing on proximity
•
Minimal external components
•
Standard
I
2
C
interface
•
Optional RDY indication for event mode
operation
•
Low power consumption:
•
240uA (100Hz response, Hall),
•
55uA (100Hz response, capacitive),
•
65uA (20Hz response, Hall)
•
15uA (20Hz response, capacitive)
•
5uA (5Hz response, capacitive)
•
Supply Voltage: 2.0V to 3.6V**
*Optimal conditions
**5V solution available on demand.
•
•
Applications
•
•
•
Anemometer
Dial or Selector knob
Mouse wheel
•
•
•
Measuring wheel
Digital angle gauge
Speedometer for bicycle
T
A
-20°C to 85°C
1
Available Packages
DFN(3x3)-10
IQS624-xzyy
1
WLCSP-9
IQS624-32yy
All versions
Copyright © Azoteq 2018
All rights reserved
IQS624 Datasheet v2.03
Memory Map
Page 1 of 78
December 2018
IQ Switch
®
ProxFusion
®
Series
Contents
LIST OF ABBREVIATIONS ............................................................................................................................................. 4
INTRODUCTION .................................................................................................................................................. 5
1.1
1.2
1.3
1.4
1.5
P
ROX
F
USION
® ....................................................................................................................................................... 5
P
ACKAGING AND
P
IN
-O
UT
....................................................................................................................................... 5
R
EFERENCE SCHEMATIC
........................................................................................................................................... 7
S
ENSOR CHANNEL COMBINATIONS
............................................................................................................................. 7
P
ROX
F
USION
® S
ENSITIVITY
...................................................................................................................................... 8
CAPACITIVE SENSING ......................................................................................................................................... 9
2.1
2.2
2.3
2.4
2.5
I
NTRODUCTION
...................................................................................................................................................... 9
C
HANNEL SPECIFICATIONS
........................................................................................................................................ 9
H
ARDWARE CONFIGURATION
.................................................................................................................................. 10
R
EGISTER CONFIGURATION
..................................................................................................................................... 10
S
ENSOR DATA OUTPUT AND FLAGS
........................................................................................................................... 11
INDUCTIVE SENSING ..........................................................................................................................................12
3.1
3.2
3.3
3.4
3.5
I
NTRODUCTION TO INDUCTIVE SENSING
..................................................................................................................... 12
C
HANNEL SPECIFICATIONS
...................................................................................................................................... 12
H
ARDWARE CONFIGURATION
.................................................................................................................................. 12
R
EGISTER CONFIGURATION
..................................................................................................................................... 13
S
ENSOR DATA OUTPUT AND FLAGS
........................................................................................................................... 13
HALL-EFFECT SENSING .......................................................................................................................................14
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
I
NTRODUCTION TO
H
ALL
-
EFFECT SENSING
................................................................................................................. 14
C
HANNEL SPECIFICATIONS
...................................................................................................................................... 14
H
ARDWARE CONFIGURATION
.................................................................................................................................. 15
R
EGISTER CONFIGURATION
..................................................................................................................................... 15
S
ENSOR DATA OUTPUT AND FLAGS
........................................................................................................................... 16
IQS624-32 I
NTERVAL
UI ...................................................................................................................................... 17
IQS624-32 E
XAMPLE
.......................................................................................................................................... 18
IQS624-32 W
HEEL
W
AKE
P
RELOAD
(0
X
7C) ............................................................................................................ 19
IQS624-32 E
VENT
M
ODE
O
PTIONS
........................................................................................................................ 20
DEVICE CLOCK, POWER MANAGEMENT AND MODE OPERATION ......................................................................21
5.1
5.2
5.3
5.4
5.5
D
EVICE MAIN OSCILLATOR
...................................................................................................................................... 21
D
EVICE MODES
.................................................................................................................................................... 21
S
TREAMING AND EVENT MODE
:............................................................................................................................... 22
R
EPORT RATES
..................................................................................................................................................... 23
S
YSTEM RESET
..................................................................................................................................................... 23
COMMUNICATION ............................................................................................................................................24
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
C
ONTROL
B
YTE
.................................................................................................................................................... 24
I2C R
EAD
........................................................................................................................................................... 24
I2C W
RITE
.......................................................................................................................................................... 25
E
ND OF
C
OMMUNICATION
S
ESSION
/ W
INDOW
......................................................................................................... 25
S
TOP
-
BIT DISABLE OPTION
(IQS624-32) ................................................................................................................... 25
D
EVICE ADDRESS AND SUB
-
ADDRESSES
..................................................................................................................... 26
A
DDITIONAL
OTP
OPTIONS
.................................................................................................................................... 26
R
EQUEST
C
OMMUNICATION
W
INDOW
..................................................................................................................... 27
I
2
C S
PECIFIC
C
OMMANDS
...................................................................................................................................... 27
R
ECOMMENDED COMMUNICATION AND RUNTIME FLOW DIAGRAM
................................................................................ 28
Copyright © Azoteq 2018
All rights reserved
IQS624 Datasheet v2.03
Memory Map
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December 2018
IQ Switch
®
ProxFusion
®
Series
IQS624 MEMORY MAP ......................................................................................................................................29
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
D
EVICE
I
NFORMATION
........................................................................................................................................... 32
D
EVICE
S
PECIFIC
D
ATA
.......................................................................................................................................... 33
C
OUNT
D
ATA
...................................................................................................................................................... 35
P
ROX
F
USION SENSOR SETTINGS
............................................................................................................................... 36
T
OUCH
/ P
ROXIMITY
UI
SETTINGS
............................................................................................................................ 39
HALL S
ENSOR
S
ETTINGS
........................................................................................................................................ 40
H
ALL
W
HEEL
O
UTPUT
........................................................................................................................................... 44
D
EVICE AND
P
OWER
M
ODE
S
ETTINGS
...................................................................................................................... 47
ELECTRICAL CHARACTERISTICS ..........................................................................................................................51
8.1
8.2
8.3
8.4
8.5
A
BSOLUTE
M
AXIMUM
S
PECIFICATIONS
..................................................................................................................... 51
V
OLTAGE REGULATION SPECIFICATIONS
..................................................................................................................... 51
R
ESET
C
ONDITIONS
............................................................................................................................................... 52
D
IGITAL INPUT
/
OUTPUT TRIGGER LEVELS
................................................................................................................... 52
C
URRENT CONSUMPTIONS
..................................................................................................................................... 53
PACKAGE INFORMATION ..................................................................................................................................56
9.1
9.2
9.3
9.4
9.5
DFN10
PACKAGE AND FOOTPRINT SPECIFICATIONS
..................................................................................................... 56
WLCSP-9
PACKAGE AND FOOTPRINT SPECIFICATIONS
................................................................................................. 57
D
EVICE MARKING AND ORDERING INFORMATION
........................................................................................................ 58
T
APE AND REEL SPECIFICATION
................................................................................................................................ 59
MSL L
EVEL
......................................................................................................................................................... 61
DATASHEET REVISIONS .................................................................................................................................62
10.1
10.2
R
EVISION HISTORY
................................................................................................................................................ 62
E
RRATA
.............................................................................................................................................................. 63
CONTACT INFORMATION ..............................................................................................................................64
APPENDICES ..................................................................................................................................................65
12.1
12.2
12.3
A
PPENDIX
A: M
AGNET ORIENTATION
....................................................................................................................... 65
A
PPENDIX
B: M
AGNET CALIBRATION
........................................................................................................................ 70
A
PPENDIX
C: H
ALL
ATI ......................................................................................................................................... 76
Copyright © Azoteq 2018
All rights reserved
IQS624 Datasheet v2.03
Memory Map
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December 2018
IQ Switch
®
ProxFusion
®
Series
List of abbreviations
PXS – ProxSense
®
ATI – Automatic Tuning Implementation
LTA – Long term average
Thr – Threshold
UI – User interface
AC – Alternating current
DSP – Digital signal processing
RX – Receiving electrode
TX – Transmitting electrode
CS – Sampling capacitor
C – Capacitive
NP – Normal power
LP – Low power
ULP – Ultra low power
ACK – I
2
C Acknowledge condition
NACK – I
2
C Not Acknowledge condition
FG – Floating gate
Copyright © Azoteq 2018
All rights reserved
IQS624 Datasheet v2.03
Memory Map
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December 2018
IQ Switch
®
ProxFusion
®
Series
Introduction
1.1 ProxFusion®
The ProxFusion
®
sensor series provide all the proven ProxSense
®
engine capabilities with
additional sensors types. A combined sensor solution is available within a single platform.
1.2 Packaging and Pin-Out
1.2.1 DFN(3x3)-10
SDA
RDY
VDDHI
VREG
LTX
IQS624
VSS
NC
SCL
RX1
RX0
Figure 1-1 Pin out of IQS624 DFN (3X3)-10 package.
Table 1-1 IQS624 Pin-out
IQS624 Pin-out
Pin
1
2
3
4
5
6
7
8
9
10
Name
SDA
RDY
VDDHI
VREG
LTX
CRX0
CRX1
SCL
NC
VSS
Type
Digital Input / Output
Digital Output
Supply Input
Regulator Output
Analogue
Analogue
Analogue
Digital Input / Output
Not connect
Supply Input
Function
I
2
C: SDA Output
I
2
C: RDY Output
Supply Voltage Input
Internal Regulator Pin
Transmit Electrode 1
Sense Electrode 0
Sense Electrode 1
I
2
C: SCL Output
Not connect
Ground Reference
Copyright © Azoteq 2018
All rights reserved
IQS624 Datasheet v2.03
Memory Map
Page 5 of 78
December 2018