IQ Switch
®
ProxFusion
®
Series
IQS625 Datasheet
Combination sensor including: Hall-effect rotation sensing, along with dual-channel
capactive proximity/touch sensing.
The IQS625 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 interval of the magnet without
extra calculations.
Features
•
Hall effect angle sensor:
o
On-chip Hall plates
o
Absolute Wheel Interval Output
▪
Up to 36 intervals
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
Multiple integrated UI
o
Proximity / Touch
o
Proximity wake-up
o
Event mode
o
Wake Hall sensing on
proximity
o
Interval wake-up
•
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
TSSOP-8
Representations
only, not actual
markings
•
•
Applications
•
•
•
Anemometer
Dial or Selector knob
Mouse wheel
•
•
•
Measuring wheel
Digital angle gauge
Speedometer for bicycle
Available Packages
T
A
TSSOP(3x6.4)-8
-20°C to 85°C
IQS625-3yy
Copyright © Azoteq 2018
All rights reserved
IQS625 Datasheet v1.0
Memory Map
Page 1 of 61
November 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
........................................................................................................................................... 5
S
ENSOR CHANNEL COMBINATIONS
............................................................................................................................. 6
P
ROX
F
USION
® S
ENSITIVITY
...................................................................................................................................... 6
CAPACITIVE SENSING ......................................................................................................................................... 7
2.1
2.2
2.3
2.4
2.5
I
NTRODUCTION
...................................................................................................................................................... 7
C
HANNEL SPECIFICATIONS
........................................................................................................................................ 7
H
ARDWARE CONFIGURATION
.................................................................................................................................... 8
R
EGISTER CONFIGURATION
....................................................................................................................................... 8
S
ENSOR DATA OUTPUT AND FLAGS
............................................................................................................................. 9
HALL-EFFECT SENSING .......................................................................................................................................10
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
I
NTRODUCTION TO
H
ALL
-
EFFECT SENSING
................................................................................................................. 10
C
HANNEL SPECIFICATIONS
...................................................................................................................................... 10
H
ARDWARE CONFIGURATION
.................................................................................................................................. 11
R
EGISTER CONFIGURATION
..................................................................................................................................... 11
S
ENSOR DATA OUTPUT AND FLAGS
........................................................................................................................... 12
IQS625 I
NTERVAL
UI ........................................................................................................................................... 12
IQS625 E
XAMPLE
................................................................................................................................................ 14
IQS625 W
HEEL
W
AKE
P
RELOAD
(0
X
7C) ................................................................................................................. 15
IQS625 E
VENT
M
ODE
O
PTIONS
............................................................................................................................. 15
DEVICE CLOCK, POWER MANAGEMENT AND MODE OPERATION ......................................................................17
4.1
4.2
4.3
4.4
D
EVICE MAIN OSCILLATOR
...................................................................................................................................... 17
D
EVICE MODES
.................................................................................................................................................... 17
S
TREAMING AND EVENT MODE
:............................................................................................................................... 18
S
YSTEM RESET
..................................................................................................................................................... 19
COMMUNICATION ............................................................................................................................................20
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
C
ONTROL
B
YTE
.................................................................................................................................................... 20
I2C R
EAD
........................................................................................................................................................... 20
I2C W
RITE
.......................................................................................................................................................... 21
E
ND OF
C
OMMUNICATION
S
ESSION
/ W
INDOW
......................................................................................................... 21
S
TOP
-
BIT DISABLE OPTION
...................................................................................................................................... 21
D
EVICE ADDRESS AND SUB
-
ADDRESSES
..................................................................................................................... 22
A
DDITIONAL
OTP
OPTIONS
.................................................................................................................................... 22
R
EQUEST
C
OMMUNICATION
W
INDOW
..................................................................................................................... 23
I
2
C S
PECIFIC
C
OMMANDS
...................................................................................................................................... 23
R
ECOMMENDED COMMUNICATION AND RUNTIME FLOW DIAGRAM
................................................................................ 24
IQS625 MEMORY MAP ......................................................................................................................................25
6.1
6.2
6.3
6.4
6.5
6.6
6.7
D
EVICE
I
NFORMATION
........................................................................................................................................... 27
D
EVICE
S
PECIFIC
D
ATA
.......................................................................................................................................... 28
C
OUNT
D
ATA
...................................................................................................................................................... 29
P
ROX
F
USION SENSOR SETTINGS
............................................................................................................................... 30
T
OUCH
/ P
ROXIMITY
UI
SETTINGS
............................................................................................................................ 32
HALL S
ENSOR
S
ETTINGS
........................................................................................................................................ 33
D
EVICE AND
P
OWER
M
ODE
S
ETTINGS
...................................................................................................................... 37
ELECTRICAL CHARACTERISTICS ..........................................................................................................................41
7.1
7.2
A
BSOLUTE
M
AXIMUM
S
PECIFICATIONS
..................................................................................................................... 41
V
OLTAGE REGULATION SPECIFICATIONS
..................................................................................................................... 41
IQS625 Datasheet v1.0
Memory Map
Page 2 of 61
November 2018
Copyright © Azoteq 2018
All rights reserved
IQ Switch
®
ProxFusion
®
Series
7.3
7.4
7.5
P
OWER
O
N
-
RESET
/B
ROWN OUT
............................................................................................................................. 41
D
IGITAL INPUT
/
OUTPUT TRIGGER LEVELS
................................................................................................................... 42
C
URRENT CONSUMPTIONS
..................................................................................................................................... 43
PACKAGE INFORMATION ..................................................................................................................................44
8.1
8.2
8.3
8.4
8.5
TSSOP-8
PACKAGE SPECIFICATIONS
......................................................................................................................... 44
TSSOP-8 R
ECOMMENDED
PCB F
OOTPRINT
............................................................................................................. 44
D
EVICE MARKING AND ORDERING INFORMATION
........................................................................................................ 45
T
APE AND REEL SPECIFICATION
................................................................................................................................ 46
MSL L
EVEL
(P
RELIMINARY
) .................................................................................................................................... 47
DATASHEET REVISIONS .....................................................................................................................................48
9.1
R
EVISION HISTORY
................................................................................................................................................ 48
CONTACT INFORMATION ..............................................................................................................................49
APPENDICES ..................................................................................................................................................50
11.1
11.2
11.3
A
PPENDIX
A: M
AGNET ORIENTATION
....................................................................................................................... 50
A
PPENDIX
B: M
AGNET CALIBRATION
........................................................................................................................ 54
A
PPENDIX
C: H
ALL
ATI ......................................................................................................................................... 60
Copyright © Azoteq 2018
All rights reserved
IQS625 Datasheet v1.0
Memory Map
Page 3 of 61
November 2018
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