IQS621 [ETC]
Combination sensor with ambient light sensing (ALS), capacitive proximity/touch, Halleffect sensor & inductive sensing capabilities;
| 型号： | IQS621 |
| 厂家： | 
ETC |
| 描述： | Combination sensor with ambient light sensing (ALS), capacitive proximity/touch, Halleffect sensor & inductive sensing capabilities |
| 文件： | 总79页 (文件大小：2203K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IQ Switch
ProxFusion® Series
IQS621 Datasheet
Combination sensor with ambient light sensing (ALS), capacitive proximity/touch, Hall-
effect sensor & inductive sensing capabilities
The IQS621 ProxFusion® IC is a multifunctional, ambient light sensing (ALS), capacitive, Hall-effect
& inductive sensor designed for applications where any or all of the technologies may be required.
The IQS621 is an ultra-low power solution designed for short or long term activations through any of
the sensing channels. The IQS621 is fully I2C compatible.
Features
mobile platforms:
•
Unique combination of sensing
technologies:
o
o
Proximity / Touch
Proximity wake-up
o
o
o
o
Capacitive sensing
Ambient light sensing (ALS)
Hall-effect sensing
•
•
Automatic Tuning
Implementation (ATI) –
performance
Inductive sensing
•
•
Capacitive sensing
enhancement (10bit)
o
o
Full auto-tuning with adjustable sensitivity
2pF to 200pF external capacitive load
capability
Minimal
external
UOLG 2.8 x 2.5 x 0.6
9-pin
components
Standard I2C interface
Representations only
•
•
o
Enhanced temperature stability
Optional RDY indication for event mode
operation
Ambient light sensing (ALS)
o
o
o
o
Absolute lux output
Human eye response compensated
4-bit ALS range output (0 - 10)
Dual threshold detection for day/night
indication with hysteresis
•
Low power consumption:
o
o
o
o
o
o
o
o
o
75uA (100Hz response, 1ch inductive)
95uA (100Hz response, 2ch Hall)
75uA (100Hz response, 3ch capacitive)
60uA (100Hz response, ALS)
25uA (20Hz response, 1ch inductive)
25uA (20Hz response, 2ch Hall)
20uA (20Hz response, 3ch capacitive)
18uA (20Hz response, ALS)
•
Hall-effect sensing
o
o
o
o
On-chip Hall-effect measurement plates
Dual direction Hall switch sensor UI
2 level detection (widely variable)
Detection range 10mT – 200mT
2.5uA (4Hz response, 1ch cap. wake-up)
•
•
Inductive sensing
•
•
Supply voltage: 1.8V to 3.3V
o
2 Level detection and hysteresis for inductive
sensing
Low profile UOLG - 2.8 x 2.5 x 0.6 - 9-pin
package
o
Only external sense coil required (PCB trace)
Multiple integrated UI options based on
years of experience in sensing on fixed and
Applications
• Mobile electronics (phones/tablets)
• Home automation & lighting control
• White goods and appliances
• Wearable devices
• Human Interface Devices
• Aftermarket automotive1
Available Packages
UOLG-2.8 x 2.5 x 0.6–9N
TA
-20°C to +85°C
IQS621
1 The part is not automotive qualified.
Copyright © Azoteq 2018
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IQ Switch
ProxFusion® Series
Table of Contents
LIST OF ABBREVIATIONS ............................................................................................................................................. 4
1
2
3
4
5
6
INTRODUCTION.................................................................................................................................................. 5
®
PROXFUSION ....................................................................................................................................................... 5
PACKAGING AND PIN-OUT ....................................................................................................................................... 6
REFERENCE SCHEMATIC ........................................................................................................................................... 7
SENSOR CHANNEL COMBINATIONS ............................................................................................................................. 8
®
PROXFUSION SENSITIVITY ....................................................................................................................................... 9
CAPACITIVE SENSING ........................................................................................................................................10
®
INTRODUCTION TO PROXSENSE .............................................................................................................................. 10
CHANNEL SPECIFICATIONS ...................................................................................................................................... 10
HARDWARE CONFIGURATION.................................................................................................................................. 11
SOFTWARE CONFIGURATION................................................................................................................................... 12
SENSOR DATA OUTPUT AND FLAGS........................................................................................................................... 13
INDUCTIVE SENSING..........................................................................................................................................14
INTRODUCTION TO INDUCTIVE SENSING..................................................................................................................... 14
CHANNEL SPECIFICATIONS ...................................................................................................................................... 14
HARDWARE CONFIGURATION.................................................................................................................................. 15
SOFTWARE CONFIGURATION................................................................................................................................... 15
SENSOR DATA OUTPUT AND FLAGS........................................................................................................................... 17
AMBIENT LIGHT SENSING (ALS) .........................................................................................................................18
INTRODUCTION TO AMBIENT LIGHT SENSING .............................................................................................................. 18
CHANNEL SPECIFICATIONS ...................................................................................................................................... 18
HARDWARE CONFIGURATION.................................................................................................................................. 18
SOFTWARE CONFIGURATION................................................................................................................................... 19
SENSOR DATA OUTPUT AND FLAGS........................................................................................................................... 20
HALL-EFFECT SENSING.......................................................................................................................................21
INTRODUCTION TO HALL-EFFECT SENSING ................................................................................................................. 21
CHANNEL SPECIFICATIONS ...................................................................................................................................... 21
HARDWARE CONFIGURATION.................................................................................................................................. 22
SOFTWARE CONFIGURATION................................................................................................................................... 23
SENSOR DATA OUTPUT AND FLAGS........................................................................................................................... 24
TEMPERATURE MONITORING ...........................................................................................................................25
INTRODUCTION TO TEMPERATURE MONITORING......................................................................................................... 25
CHANNEL SPECIFICATIONS ...................................................................................................................................... 25
HARDWARE CONFIGURATION.................................................................................................................................. 25
SOFTWARE CONFIGURATION................................................................................................................................... 25
SENSOR DATA OUTPUT AND FLAGS........................................................................................................................... 26
7
8
DEVICE CLOCK, POWER MANAGEMENT AND MODE OPERATION......................................................................27
DEVICE MAIN OSCILLATOR...................................................................................................................................... 27
DEVICE MODES .................................................................................................................................................... 27
SYSTEM RESET ..................................................................................................................................................... 28
COMMUNICATION ............................................................................................................................................29
I2C MODULE SPECIFICATION.................................................................................................................................... 29
I2C READ ........................................................................................................................................................... 29
I2C WRITE .......................................................................................................................................................... 29
STOP-BIT DISABLE OPTION...................................................................................................................................... 30
DEVICE ADDRESS AND SUB-ADDRESSES ..................................................................................................................... 31
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IQ Switch
ProxFusion® Series
ADDITIONAL OTP OPTIONS .................................................................................................................................... 31
RECOMMENDED COMMUNICATION AND RUNTIME FLOW DIAGRAM................................................................................ 32
9
MEMORY MAP ..................................................................................................................................................33
DEVICE INFORMATION DATA .................................................................................................................................. 35
FLAGS AND USER INTERFACE DATA ........................................................................................................................... 36
CHANNEL COUNTS (RAW DATA)............................................................................................................................... 41
LTA VALUES (FILTERED DATA)................................................................................................................................. 41
PROXFUSION SENSOR SETTINGS BLOCK 1................................................................................................................... 42
PROXFUSION UI SETTINGS ..................................................................................................................................... 48
HYSTERESIS UI SETTINGS........................................................................................................................................ 49
ALS SENSOR SETTINGS........................................................................................................................................... 51
ALS UI SETTINGS ................................................................................................................................................. 53
HALL-EFFECT SENSOR SETTINGS............................................................................................................................... 54
HALL-EFFECT SWITCH UI SETTINGS........................................................................................................................... 56
TEMPERATURE MONITORING UI SETTINGS................................................................................................................. 57
DEVICE AND POWER MODE SETTINGS ....................................................................................................................... 59
10 ELECTRICAL CHARACTERISTICS ..........................................................................................................................64
ABSOLUTE MAXIMUM SPECIFICATIONS..................................................................................................................... 64
VOLTAGE REGULATION SPECIFICATIONS..................................................................................................................... 64
RESET CONDITIONS ............................................................................................................................................... 64
I2C MODULE OUTPUT LOGIC FALL TIME LIMITS ............................................................................................................ 65
I2C MODULE SLEW RATES ....................................................................................................................................... 66
I2C PINS (SCL & SDA) INPUT/OUTPUT LOGIC LEVELS.................................................................................................. 67
GENERAL PURPOSE DIGITAL OUTPUT PINS (GPIO0 & GPIO3) LOGIC LEVELS.................................................................... 67
CURRENT CONSUMPTIONS ..................................................................................................................................... 68
START-UP TIMING SPECIFICATIONS........................................................................................................................... 70
ALS SPECIFICATIONS......................................................................................................................................... 71
11 PACKAGE INFORMATION ..................................................................................................................................72
UOLG-2.8 X 2.5 X 0.6 – 9-PIN PACKAGE AND FOOTPRINT SPECIFICATIONS..................................................................... 72
DEVICE MARKING AND ORDERING INFORMATION ........................................................................................................ 73
BULK PACKAGING SPECIFICATION ............................................................................................................................. 74
MSL LEVEL ......................................................................................................................................................... 76
12 DATASHEET REVISIONS .....................................................................................................................................77
REVISION HISTORY ................................................................................................................................................ 77
ERRATA.............................................................................................................................................................. 77
APPENDIX A. CONTACT INFORMATION .....................................................................................................................78
APPENDIX B: HALL ATI ...............................................................................................................................................79
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ProxFusion® Series
List of abbreviations
AC
– Alternating Current
ACK
ALS
ATI
– I2C Acknowledge condition
– Ambient Light Sensing
– Automatic Tuning Implementation
– Brown Out Detection
– Sampling Capacitor
– Digital Signal Processing
– Electrostatic Discharge
– Main Clock Frequency Oscillator
– Ground
BOD
CS
DSP
ESD
FOSC
GND
GPIO
I2C
– General Purpose Input Output
– Inter-Integrated Circuit
– Integrated Circuit
IC
LP
– Low Power
LPOSC
LTA
LTX
MCU
MSL
MOQ
NACK
NC
– Low Power Oscillator
– Long Term Average
– Inductive Transmitting electrode
– Microcontroller unit
– Moisture Sensitive Level
– Minimum Order Quantity
– I2C Not Acknowledge condition
– Not Connect
NP
– Normal Power
OTP
PMU
POR
PWM
QRD
RDY
RX
– One Time Programmable
– Power Management Unit
– Power On Reset
– Pulse Width Modulation
– Quick Release Detection
– Ready Interrupt Signal
– Receiving electrode
– Specific Absorption Rate
– I2C Clock
SAR
SCL
SDA
SR
– I2C Data
– Slew rate
THR
UI
– Threshold
– User Interface
ULP
– Ultra Low Power
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IQ Switch
ProxFusion® Series
1 Introduction
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.
VREG
VDDHI
VREG
Non-
volatile
memory
HALL
effect
plates
Temperature
Digital output
GPIO / Inductive
circuit
VDDHI
VDDHI
VREG
VDDHI
VDDHI
VDDHI
Internal
regulator
(VREG)
Reset
circuit
VREG
16 MHz MCU
VREG
VREG
VDDHI
VSS
SDA
Analog
ProxFusion Engine
Analog
Photosensitive
substrate, ALS
Capacitive,HALL,Inductive
I2C
HW
SCL
RDY
MCU
(Master)
VREG
Analog - Capacitive
offset calibration (ATI)
RX0 RX1
IQS621
IQS621 functional block diagram
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IQ Switch
ProxFusion® Series
Packaging and Pin-Out
VREG LTX
RX0 RX1
VSS
IQS621
VDDHI SCL
RDY
SDA
IQS621 pin-out (UOLG-2.8x2.5x0.6–9-pin package top view; appearance may
differ)
Table 1.1
Pin-out description
IQS621 in UOLG-2.8 x 2.5 x 0.6 – 9-pin
Name
Type
Function
Pin
Connect to conductive area intended for
sensor receiving
1
RX0
Analogue receiving electrode
Connect to conductive area intended for
sensor receiving
2
3
4
RX1
Analogue receiving electrode
Regulates the system’s internal voltage
VREG Voltage regulator output
Requires external capacitors to ground
Connect to conductive area intended for
sensor transmitting
LTX
Transmitter electrode
5
6
7
8
9
RDY
SDA
SCL
Digital Input / Output
Digital Input / Output
Digital Input / Output
RDY (I2C Ready interrupt signal)
SDA (I2C Data signal)
SCL (I2C Clock signal)
VDDHI Supply Input
VSS Signal GND
Supply: 1.8V – 3.3V
Common ground reference
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IQ Switch
ProxFusion® Series
Reference schematic
IQS621 reference schematic
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IQ Switch
ProxFusion® Series
Sensor channel combinations
The table below summarizes the IQS621 sensor and channel associations.
Table 1.2 Sensor - channel allocation
CH0
CH1
CH2
CH3
CH4
CH5
CH6
Sensor / UI type
Self capacitive
ͦ
ͦ
ͦ
Hysteresis UI
Mutual inductive
Hysteresis UI
•
ͦ
ͦ
•
Ambient light
sensing
•
•
•
•
Hall-effect
switch UI
Positive Negative
Temperature
trip and output
•
Key:
o - Optional implementation
• - Fixed use for UI
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IQ Switch
ProxFusion® Series
ProxFusion® Sensitivity
The measurement circuitry uses a temperature stable internal sample capacitor (CS) and internal
regulated voltage (VREG). Internal regulation provides for more accurate measurements over
temperature variation. The size CS can be decreased to increase sensitivity on the capacitive
channels of the IQS621.
1
푆푒푛푠푖푡푖푣푖푡푦 ∝
퐶ꢀ
The Automatic Tuning Implementation (ATI) is a sophisticated technology implemented on the
ProxFusion® series devices. It allows for optimal performance of the devices for a wide range of
sense electrode capacitances, without modification or addition of external components. The ATI
functionality ensures that sensor sensitivity is not affected by external influences such as temperate,
parasitic capacitance and ground reference changes.
The ATI process adjusts three values (Coarse multiplier, Fine multiplier, Compensation) using two
parameters (ATI base and ATI target) as inputs. A 10-bit compensation value ensures that an
accurate target is reached. The base value influences the overall sensitivity of the channel and
establishes a base count from where the ATI algorithm starts executing. A rough estimation of
sensitivity can be calculated as:
푇푎푟푔푒푡
푆푒푛푠푖푡푖푣푖푡푦 ∝
퐵푎푠푒
As seen from this equation, the sensitivity can be increased by either increasing the Target value or
decreasing the Base value. A lower base value will typically result in lower multipliers and more
compensation would be required. It should, however, be noted that a higher sensitivity will yield a
higher noise susceptibility. Refer to Appendix B: Hall ATI for more information on Hall ATI.
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IQ Switch
ProxFusion® Series
2 Capacitive sensing
Introduction to ProxSense®
Building on the previous successes from the ProxSense® range of capacitive sensors, the same
fundamental sensor engine has been implemented in the ProxFusion® series.
The capacitive sensing capabilities of the IQS621 include:
•
•
Self capacitive sensing.
Maximum of 2 capacitive channels to be individually configured.
o Prox and touch adjustable thresholds
o Individual sensitivity setups
o Alternative ATI modes
•
•
Discreet button UI (always enabled):
o Fully configurable 2 level threshold setups for prox & touch activation levels.
o Customizable filter halt time.
Hysteresis UI:
o 4 Optional prox and touch activation hysteresis selections
o Fully configurable 2 level threshold setups for prox & touch activation levels.
o Configurable filter halt threshold.
Channel specifications
The IQS621 provides a maximum of 2 channels available to be configured for capacitive sensing.
Each channel can be setup separately according to the channel’s associated settings registers.
There are two distinct capacitive user interfaces available to be used.
a) Discreet proximity/touch UI (always enabled)
b) Hysteresis UI (fixed use of channel 1)
Table 2.1
CH0
Capacitive sensing - channel allocation
CH1
CH2
CH3
CH4
CH5
CH6
Sensor/UI type
Self capacitive
ͦ
ͦ
•
Hysteresis UI
Key:
o - Optional implementation
• - Fixed use for UI
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ProxFusion® Series
Hardware configuration
In the table below are multiple options of configuring sensing (RX) and transmitting (LTX) electrodes
to realize different implementations (combinations not shown).
Table 2.2
Capacitive sensing hardware description
Self capacitive
RX0
RX1
1
button
LTX
RX0
RX1
2
buttons
LTX
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ProxFusion® Series
Software configuration
Registers to configure for capacitive sensing:
Table 2.3
Name
Capacitive sensing settings registers
Recommended setting
Description
Address
ProxFusion Settings 0 Sensor mode and
configuration of each
Sensor mode should be set to
capacitive mode
0x40
0x41
channel.
An appropriate RX and TX
should be chosen
ProxFusion Settings 1 Channel settings for the
ProxSense sensors
Full ATI is recommended for
fully automated sensor tuning.
0x42
0x43
ProxFusion Settings 2 ATI settings for ProxSense
sensors
ATI target should be more
than ATI base to achieve an
ATI
0x44
0x45
ProxFusion Settings 3 Additional Global settings for None
ProxSense sensors
0x46
0x47
ProxFusion Settings 4 Filter settings
Keep AC filter enabled
0x48
0x49
ProxFusion Settings 5 Advance sensor settings
None
Proximity threshold
Touch threshold
Proximity Thresholds for all
capacitive channels (except
for SAR active on channel 0)
Preferably more than touch
threshold
0x50
0x52
Touch Thresholds for all
capacitive channels
None
None
0x51
0x53
ProxFusion discrete
UI halt time
Halt timeout setting for all
capacitive channels
0x54
Registers to configure for the hysteresis UI:
Table 2.4 Hysteresis UI settings registers
Name Description
Address
0x48
ProxFusion settings 4
Hysteresis UI Settings
Hysteresis UI enable command
Hysteresis settings for the prox and touch thresholds
Threshold setting to trigger a filter halt for on channel 1
0x60
Hysteresis UI filter
halt threshold
0x61
0x62
0x63
Hysteresis UI
proximity threshold
Proximity threshold used for hysteresis UI detections on
channel 1
Hysteresis UI touch
threshold
Touch threshold used for hysteresis UI detections on channel 1
Example code:
Example code for an Arduino Uno can be downloaded at:
www.azoteq.com//images/stories/software/IQS62x_Demo.zip
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IQ Switch
ProxFusion® Series
Sensor data output and flags
The following registers should be monitored by the master to detect capacitive sensor activations:
a) The Global events register (0x11) will show the IQS621’s main events. Bit0 is dedicated to
the ProxFusion activations.
Global events (0x11)
Bit
Number
Data
7
-
6
5
R
4
R
3
2
1
0
R
R
R
R
R
Access
POWER
MODE
EVENT
HYSTE-
RESIS UI
EVENT
PROX
SENSE
EVENT
SYS
TEMP
ALS
EVENT
HALL
EVENT
Name
-
EVENT EVENT
b) The ProxFusion UI flags (0x12) provide more detail regarding the capacitive sensor outputs.
An individual prox and touch output bit for channel 0 and 1 is provided in the ProxFusion UI
flags register.
ProxFusion UI flags (0x12)
Bit
7
6
5
4
3
2
1
0
Number
Data
-
-
-
-
R
R
-
-
-
-
R
R
Access
Name
CH1_T
CH0_T
CH1_P
CH0_P
c) The Hysteresis UI flags (0x12) provide more detail regarding the capacitive sensor outputs
for the Hysteresis UI. An individual prox and touch output bit for channel 1 is provided in the
Hysteresis UI flags register.
Hysteresis UI flags (0x13)
Bit
Number
7
6
5
4
3
2
1
R
0
R
Data
Access
-
-
-
-
-
R
Signed
output
Name
-
-
-
-
-
TOUCH
PROX
a) The Hysteresis UI output (0x14 & 0x15) provide the exact Hysteresis UI output value.
Hysteresis UI output (0x14/0x15)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Hysteresis UI output low byte
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Hysteresis UI output high byte
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IQ Switch
ProxFusion® Series
3 Inductive sensing
Introduction to inductive sensing
The IQS621 provides inductive sensing capabilities in order to detect the presence of metal/metal-
type objects. Prox and touch thresholds are widely adjustable and individual hysteresis settings are
definable for each using the Hysteresis UI.
Channel specifications
The IQS621 requires both Rx sensing pins as well as the Tx pin for mutual inductive sensing.
Channel 1 is dedicated to the Hysteresis UI.
There are two distinct inductive user interfaces available to be used.
•
Discreet button UI (always enabled):
o Fully configurable 2 level threshold Prox & Touch activation.
o Customizable UI halt time.
•
Hysteresis UI:
o Fully configurable 2 level threshold Prox & Touch activation.
o 4 Hysteresis selection options
o Customizable UI halt time.
o Configurable filter halt threshold.
Table 3.1
CH0
Mutual inductive sensor – channel allocation
CH1
CH2
CH3
CH4
CH5
CH6
Mode
Mutual
inductive
ͦ
ͦ
•
Hysteresis UI
Key:
o - Optional implementation
- Fixed use for UI
•
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ProxFusion® Series
Hardware configuration
Table 3.2
Mutual inductive hardware description
Mutual inductive
Software configuration
Registers to configure for inductive sensing:
Table 3.3
Inductive sensing settings registers
Recommended setting
Name
Description
Address
0x41
ProxFusion Settings 0
Sensor mode and
configuration of channel 1.
Sensor mode should be set to
inductive mode
Both RX0 and RX1 should be
active on channel 1
ProxFusion Settings 1
ProxFusion Settings 2
ProxFusion Settings 3
ProxFusion Settings 4
Channel 1 settings for the
inductive sensor
Full ATI is recommended for
fully automated sensor tuning.
0x43
0x45
0x47
0x48
ATI settings for the
inductive sensor
ATI target should be more than
ATI base to achieve an ATI
Additional settings for the
inductive sensor
None
UI enable command and
filter settings
Enable the Hysteresis UI.
Filter according to application.
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ProxFusion® Series
Registers to configure for the hysteresis UI:
Table 3.4
Name
Hysteresis UI settings registers
Description
Address
0x48
ProxFusion settings 4
Hysteresis UI Settings
Hysteresis UI enable command
Hysteresis settings for the prox and touch thresholds
Threshold setting to trigger a filter halt for on channel 1
0x60
Hysteresis UI filter halt
threshold
0x61
0x62
0x63
Hysteresis UI proximity
threshold
Proximity threshold used for hysteresis UI detections on
channel 1
Hysteresis UI touch
threshold
Touch threshold used for hysteresis UI detections on
channel 1
Example code:
Example code for an Arduino Uno can be downloaded at:
www.azoteq.com//images/stories/software/IQS62x_Demo.zip
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ProxFusion® Series
Sensor data output and flags
The following registers can be monitored by the master to detect inductive sensor related events.
a) Global events (0x11) to prompt for inductive sensor activation. Bit3 denoted as
HYSTERESIS UI EVENT will indicate the detection of a metal object using the inductive
sensing.
Global events (0x11)
Bit
Number
Data
Access
7
-
6
5
4
3
2
R
1
R
0
R
R
R
R
R
POWER
MODE
EVENT
HYSTE-
RESIS UI
EVENT
PROX
SENSE
EVENT
SYS
EVENT
TEMP
EVENT
ALS
HALL
Name
-
EVENT EVENT
b) The Hysteresis UI flags (0x13) register provides the classic prox/touch two level activation
outputs as well as a signed output bit to distinguish between whether the counts have risen
or fallen below the LTA (direction of counts).
Hysteresis UI flags (0x13)
Bit
Number
7
6
5
4
3
2
1
R
0
R
Data
Access
-
-
-
-
-
R
Signed
output
Name
-
-
-
-
-
TOUCH
PROX
c) Hysteresis UI output (0x14 - 0x15) registers will provide a combined 16-bit value to acquire
the magnitude of the inductive sensed object.
Hysteresis UI output (0x14 - 0x15)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Hysteresis UI output low byte
Bit
Number
Data
Access
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Name
Hysteresis UI output high byte
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4 Ambient light sensing (ALS)
Introduction to ambient light sensing
The IQS621 employs two light sensitive semi-conductor areas on chip to realise an ambient light
sensor. The sensor capabilities include:
•
•
Absolute Lux output value
4-bit ALS range output (0 – 10)
•
•
Human eye response and IR compensated
Dual threshold detection for day/night indication with hysteresis
o 8-bit individual definable light and dark trigger thresholds
o Dark threshold range: 0 – 1020 Lux in steps of 4 Lux.
o Light threshold range: 0 – 4080 Lux in steps of 16 Lux.
CS size, multipliers and charge frequency fully adjustable.
Ch3 – ALS channel 1:
•
•
o Assigned to Wide spectrum ALS.
•
Ch4 – ALS channel 2:
o Assigned to narrow spectrum ALS.
Channel specifications
The IQS621 provides 2 dedicated channels to ALS conversions.
Table 4.1
CH0
Ambient light sensing - channel allocation
CH1
CH2
CH3
CH4
CH5
CH6
Sensor/UI type
ALS
•
•
Key:
o - Optional implementation
• - Fixed use for UI
Hardware configuration
No external hardware required. Package placement and lens clearance required.
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Software configuration
Registers to configure for ALS sensing:
Table 4.2 ALS sensing settings registers
Name
Description
Recommended setting
Address
0x70
ALS Settings 0
ALS conversion settings and
filter configuration settings
None
ALS Settings 1
ALS channel ATI target and
multiplier calibration value
None
0x71
Registers to configure for the ALS UI:
Table 4.3 ALS UI settings registers
Description
Name
Address
0x80
ALS dark threshold Threshold setting value to detect a dark condition
ALS light threshold Threshold setting value to detect a light condition
0x81
ALS to Lux divider
Calibration value used to provide an absolute Lux output from
ALS measurements
0x82
0x83
ALS IR divider
Calibration value used to compensate for the influence of IR
spectrum radiation in ALS measurements
Example code:
Example code for an Arduino Uno can be downloaded at:
www.azoteq.com//images/stories/software/IQS62x_Demo.zip
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Sensor data output and flags
The following registers can be monitored by the master to detect ALS related events.
a) The ALS EVENT (bit 2) in the Global events (0x11) register are dedicated to ALS related
events. This bit will toggle when any change in ALS flags occurs and is automatically cleared
after reading the registers.
Global events (0x11)
Bit
Number
Data
Access
7
-
6
5
R
4
R
3
2
1
0
R
R
R
R
R
POWER
MODE
EVENT
HYSTE-
RESIS UI
EVENT
PROX
SENSE
EVENT
SYS
TEMP
ALS
EVENT
HALL
EVENT
Name
-
EVENT EVENT
b) The ALS UI flags (0x16) register provides a 4-bit ALS Range value to indicate the current
ALS reading (ALS range value bit 0-3). An additional LIGHT/DARK bit (bit 7) is used to
indicate the ALS sensor status measured against the two-configurable light/dark threshold
values in registers 0x80 and 0x81. The user can thus setup his own triggering thresholds for
light and dark perceived readings and incorporate a hysteresis using this UI.
ALS UI flags (0x16)
Bit
Number
Data
Access
7
6
-
5
4
-
3
2
1
0
R
-
R
R
R
R
LIGHT/
DARK
Name
Reserved
ALS range value
c) The ALS UI output (0x17 - 0x18) registers provide a 16-bit value of the ALS amplitude in
units of Lux as obtained by the current sensor measurement.
ALS UI output (0x17 - 0x18)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
Name
R
R
R
R
R
R
R
R
ALS UI output low byte
Bit
Number
Data
Access
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Name
ALS UI output high byte
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5 Hall-effect sensing
Introduction to Hall-effect sensing
The IQS621 has two internal Hall-effect sensing plates (on chip). No external sensing hardware is
required for Hall-effect sensing.
The Hall-effect measurement is essentially a current measurement of the induced current through
the Hall-effect-sensor plates produced by the magnetic field passing perpendicular through each
plate.
Advanced digital signal processing is performed to provide sensible output data.
•
•
•
•
Two threshold levels are provided (proximity & touch).
Hall-effect output is linearized by inverting signals.
North/South field direction indication provided.
Differential Hall-effect sensing:
o Removes common mode disturbances
o North-South field indication
Channel specifications
Channels 5 and 6 are dedicated to Hall-effect sensing. Channel 5 performs the positive direction
measurements and channel 6 will handle all measurements in the negative direction. These two
channels are used in conjunction to acquire differential Hall-effect data and will always be used as
input data to the Hall-effect UI’s.
There is a dedicated Hall-effect user interface:
a) Hall-effect switch UI
Table 5.1
CH0
Hall-effect sensor – channel allocation
CH1 CH2 CH3 CH4
CH5
CH6
Sensor/UI type
•
•
Hall-effect
switch UI
Positive Negative
Key:
o - Optional implementation
• - Fixed use for UI
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Hardware configuration
Rudimentary hardware configurations.
Axially polarized magnet (linear movement or magnet presence detection)
Hall-effect
push
switch
Smart
cover
Bar magnet (linear movement and magnet field detection)
Slide
switch
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Software configuration
Registers to configure for Hall-effect sensing:
Table 5.2
Name
Hall-effect sensing settings registers
Description
Recommended setting
Address
0x90
Hall-effect settings 0 Charge frequency divider
and ATI mode settings
Charge frequency adjusts the
conversion rate of the Hall-
effect channels. Faster
conversions consume less
current.
Full ATI is recommended for
fully automated sensor tuning.
Hall-effect settings 1 ATI base and target
selections
ATI target should be more than
ATI base to achieve an ATI
0x91
0xA0
0xA1
0xA2
Hall-effect switch UI
settings
Various settings for the
Hall-effect switch UI
None
Hall-effect switch UI
proximity threshold
Proximity Threshold for UI Less than touch threshold
Touch Threshold for UI None
Hall-effect switch UI
touch threshold
Example code:
Example code for an Arduino Uno can be downloaded at:
www.azoteq.com//images/stories/software/IQS62x_Demo.zip
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Sensor data output and flags
The following registers can be monitored by the master to detect Hall-effect related events.
d) The HALL_EVENT (bit 1) in the Global events (0x11) register are dedicated to Hall-effect
related events. This bit will toggle when either one of the three Hall flags is set and is
automatically cleared after reading the registers.
Global events (0x11)
Bit
Number
Data
Access
7
-
6
5
R
4
R
3
2
1
0
R
R
R
R
R
POWER
MODE
EVENT
HYSTE-
REISIS UI
EVENT
PROX
SENSE
EVENT
SYS
TEMP
ALS
EVENT
HALL
EVENT
Name
-
EVENT EVENT
e) The Hall UI flags (0x19) register provides the standard two level activation output (prox and
touch) as well as a HALL_N/S bit to indicate the magnet polarity orientation.
Hall-effect UI flags (0x19)
Bit
7
6
5
4
3
2
1
0
Number
Data
-
-
-
-
-
R
R
R
Access
HALL
TOUT
HALL
POUT
HALL
N/S
Name
-
-
-
-
-
f) The Hall UI output (0x1A - 0x1B) registers provide a 16-bit value of the Hall-effect amplitude
detected by the sensor.
Hall-effect UI output (0x1A - 0x1B)
Bit
7
6
5
4
3
2
1
0
Number
Data
R
R
R
R
R
R
R
R
Access
Name
Hall-effect UI output low byte
Bit
Number
Data
Access
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Name
Hall-effect UI output high byte
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6 Temperature monitoring
Introduction to temperature monitoring
The IQS621 provides temperature monitoring capabilities which can be used for temperature change
detection in order to ensure the integrity of other sensing technology. The use of the temperature
sensor is primarily to reseed other sensor channels to account for sudden changes in environmental
conditions.
The IQS621 uses a linearly proportional to absolute temperature sensor for temperature data. The
temperature output data is given by,
푎. 2ꢁ9
푇 =
+ 푐
푏. 퐶퐻ꢂ
Where 푎, 푏 and 푐 are constants that can be determined to provide a required output data as a function
of device temperature. Additionally, the channel setup must be calculated during a testing process.
Table 6.1
Temperature calibration setting registers and ranges
IQS621
Parameter
Description
Register
Higher nibble
Lower nibble
0xC3
Range
1 – 16
1 – 16
0 – 255
Name
푎
푏
푐
푀푢푙푡푖푝푙푖푒푟
퐷푖푣푖푑푒푟
푂푓푓푠푒푡
0xC2
Channel specifications
The IQS621 requires only external passive components to do temperature monitoring (no additional
circuitry/components required). The temperature UI will be executed using data from channel 2.
Table 6.2
CH0
Temperature monitoring – channel allocation
CH1
CH2
CH3
CH4
CH5
CH6
Sensor / UI type
Temperature
trip and output
•
Key:
o - Optional implementation
• - Fixed use for UI
Hardware configuration
No additional hardware required. Temperature monitoring is realized on-chip.
Software configuration
Registers to configure for temperature sensing:
Table 6.3
Temperature sensing settings registers
Name
Description
Recommended setting
Address
0xC0
Temperature UI settings
Channel reseed settings
Reseed enable should be
set
Multipliers channel 2
Temperature sensor channel
multiplier selection
Dependent on calibration
step
0xC1
0xC2
0xC3
Temperature calibration
data 0
4-bit Multiplier (푎+1) and
divider (푏+1) calibration
values
Requires sample
calibration
Temperature calibration
data 1
8-bit Offset (푐) calibration
Requires sample
calibration
value
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Sensor data output and flags
The following registers can be monitored by the master to detect temperature sensor related events.
a) Global events (0x11) to prompt for temperature sensor activation. Bit4 denoted as
TEMP_EVENT will indicate the detection of a temperature threshold trigger using the
temperature sensing.
Global events (0x11)
Bit
Number
Data
Access
7
-
6
5
R
4
R
3
2
1
0
R
R
R
R
R
POWER
MODE
EVENT
HYSTE-
RESIS UI
EVENT
PROX
SENSE
EVENT
SYS
TEMP
ALS
EVENT
HALL
EVENT
Name
-
EVENT EVENT
b) The Temperature UI flags (0x1C) register provides a single bit for temperature trip
indication.
Temperature UI flags (0x1C)
Bit
7
6
5
4
3
2
1
0
Number
Data
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Temp
Trip
Name
Reserved
c) The Temperature UI output (0x1D - 0x1E) registers will provide a combined 16-bit value to
acquire the magnitude of the temperature sensed.
Temperature UI Output (0x1D - 0x1E)
Bit
7
6
5
4
3
2
1
0
Number
Data
R
R
R
R
R
R
R
R
Access
Name
Temperature UI output low byte
Bit
Number
Data
Access
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Name
Temperature UI output high byte
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7 Device clock, power management and mode operation
Device main oscillator
The IQS621 has a 16MHz main oscillator (default enabled) to clock all system functionality.
An option exists to reduce the main oscillator to 8MHz. This will result in all system timings, charge
transfers and sample rates to be slower by half of the default implementations.
To set this option this:
o As a software setting – Set the System_settings: bit4 = 1, via an I2C command.
o As a permanent setting – Set the OTP option in OTP Bank 0: bit2 = 1, using Azoteq USBProg
program.
Device modes
The IQS621 supports the following modes of operation;
•
•
•
•
Normal mode (Fixed report rate)
Low power mode (Reduced report rate, no UI execution)
Ultra-low power mode (Only channel 0 is sensed for a prox)
Halt mode (Suspended/disabled)
Note: Auto modes must be disabled to enter or exit halt mode.
The device will automatically switch between the different operating modes by default. However, this
Auto mode feature may be disabled by setting the DSBL_AUTO_MODE bit (Power_mode_settings
0xD2: bit5) to confine device operation to a specific power mode. The POWER_MODE bits
(Power_mode_settings 0xD2: bit4-3) can then be used to specify the desired mode of operation.
Normal mode
Normal mode is the fully active sensing mode to function at a fixed report rate specified in the Normal
mode report rate (0xD3) register. This 8-bit value is adjustable from 0ms – 255ms in intervals of 1ms.
Note: The device’s low power oscillator has an accuracy as specified in section 9.
Low power mode
Low power mode is a reduced sensing mode where all channels are sensed but at a reduced
oscillator speed. The sample rate can be specified in the Low Power mode report rate (0xD4)
register. The 8-bit value is adjustable from 0ms – 255ms in intervals of 1ms. Reduced report rates
also reduce the current consumed by the sensor.
Note: The device’s low power oscillator has an accuracy as specified in section 9.
Ultra-low power mode
Ultra-low power mode is a reduced sensing mode where only channel 0 is sensed and no other
channels or UI code are executed. Set the EN_ULP_MDE bit (Power_mode_settings: bit6) to enable
use of the ultra-low power mode. The sample rate can be specified in the Low Power mode report
rate (0xD5) register. The 8-bit value is adjustable from 0ms – 4sec in intervals of 16ms.
Wake up will occur on prox detection on channel 0.
Halt mode
Halt mode will suspend all sensing and will place the device in a dormant or sleep state. The device
requires an I2C command from a master to explicitly change the power mode out of the halt state
before any sensor functionality can continue.
Mode time
The mode time is specified in the Auto mode timer (0xD6) register. The 8-bit value is adjustable from
0ms – 2 min in intervals of 500ms.
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System reset
The IQS621 device monitor’s system resets and events.
a) Every device power-on and reset event will set the Show Reset bit (System flags 0x10: bit7)
and the master should explicitly clear this bit by writing it active to acknowledge a valid reset.
b) The system events will also be indicated with the Global events register’s SYS_EVENT bit
(Global events 0x11: bit4) if any system event occur such as a reset. This event will
continuously trigger until the reset has been acknowledged.
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8 Communication
I2C module specification
The device supports a standard two wire I2C interface with the addition of an RDY (ready interrupt)
line. The communications interface of the IQS621 supports the following:
•
•
•
Fast-mode (Fm) standard I2C up to 400kHz.
Streaming data as well as event mode.
The master may address the device at any time. If the IQS621 is not in a communication
window, the device will return an ACK after which clock stretching may be induced until a
communication window is entered. Additional communication checks are included in the
main loop in order to reduce the average clock stretching time.
The provided interrupt line (RDY) is an open-drain active low implementation and indicates
a communication window.
•
I2C Read
To read from the device a current address read can be performed. This assumes that the address-
command is already setup as desired.
Current Address Read
Start
Control byte
Data n
Data n+1
Stop
S
Addr + READ
ACK
ACK
NACK
S
Current Address Read
If the address-command must first be specified, then a random read must be performed. In this
case, a WRITE is initially performed to setup the address-command, and then a repeated start is
used to initiate the READ section.
Random Read
Address-
command
Start
Control byte
Start
Control byte
Data n
Stop
S
Addr + WRITE ACK
ACK
S
Addr + READ
ACK
NACK
S
Random Read
I2C Write
To write settings to the device a Data Write is performed. Here the Address-Command is always
required, followed by the relevant data bytes to write to the device.
Data Write
Address-
Command
Start
Control byte
Data n
Data n+1
Stop
S
Addr + WRITE ACK
ACK
ACK
ACK
S
I2C Data Write
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Stop-bit disable option
The IQS621 offer:
•
•
an additional I2C settings register (0xD9) specifically added for stop-bit disable functionality,
as well as a RDY timeout period register (0xD8) in order to set the required timeout period
for termination of any communication windows (RDY = Low) if no I2C activity is present on
SDA and SCL pins.
Customers using a MCU with a binary serial-encoder peripheral which is not fully I2C compatible (but
provide some crude serial communication functions) can use this option to configure the IQS621 so
that any auto generated stop command from the serial peripheral can be ignored by the IQS621 I2C
hardware. This will restrict the IQS621 from immediately exiting a communication window during
event mode (reduced communication only for events) until all required communication has been
completed and a stop command can correctly be transmitted. Please refer to the figures below for
serial data transmission examples.
Please note:
1. Stop-bit disable and enable must be performed at the beginning and end of a communication
window. The first and last I2C register to be written to ensure no unwanted communication
window termination.
2. Leaving the Stop-bit disabled will result in successful reading of registers but will not execute
any commands written over I2C in a communication window being terminated after a RDY
timeout and with no IQS recognised stop command.
3. The default RDY timeout period for IQS621 is purposefully long (10.24ms) for slow
responding MCU hardware architectures. Please set this register according to your
requirements/preference.
Stop-bit Disable
Communication
window open
Address-
Command
Disable
stop-bit
Ignored Continue with
Start
Control byte
stop
reads / writes
RDY = ↓LOW
S
Addr + WRITE ACK
0xD9
ACK
0x81
ACK
S
…
I2C Stop-bit Disable
Stop-bit Enable
Reads / Writes
Finished
Address-
Command
Enable
stop-bit
Communication
window closed
Start
Control byte
Stop
…
S
Addr + WRITE ACK
0xD9
ACK
0x01
ACK
S
RDY = ↑HIGH
I2C Stop-bit Enable
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Device address and sub-addresses
The default device address is 0x44 = DEFAULT_ADDR.
Alternative sub-address options are definable in the following one-time programmable bits:
OTP Bank0 (bit3; 0; bit1; bit0) = SUB_ADDR_0 to SUB_ADDR_7
a) Default address:
b) Sub-address:
c) Sub-address:
d) Sub-address:
e) Sub-address:
f) Sub-address:
g) Sub-address:
h) Sub-address:
0x44 = DEFAULT_ADDR (0x44)
0x45 = DEFAULT_ADDR (0x44)
0x46 = DEFAULT_ADDR (0x44)
0x47 = DEFAULT_ADDR (0x44)
0x4C = DEFAULT_ADDR (0x44)
0x4D = DEFAULT_ADDR (0x44)
0x4E = DEFAULT_ADDR (0x44)
0x4F = DEFAULT_ADDR (0x44)
OR
OR
OR
OR
OR
OR
OR
OR
SUB_ADDR_0 (0000b)
SUB_ADDR_1 (0001b)
SUB_ADDR_2 (0010b)
SUB_ADDR_3 (0011b)
SUB_ADDR_4 (1000b)
SUB_ADDR_5 (1001b)
SUB_ADDR_6 (1010b)
SUB_ADDR_7 (1011b)
Additional OTP options
All one-time-programmable device options are located in OTP bank 0.
OTP Bank0
Bit
Number
7
-
6
5
4
3
2
1
0
COMMS
ATI
SUB
ADR 2
Name
Internal use
8MHz
SUB ADR 0_1
Bit definitions:
•
Bit 6: Communication during ATI
o 0: No streaming events are generated during ATI
o 1: Communication continues as setup regardless of ATI state.
Bit4-5: Internal use
•
•
o Do not configure
Bit 2: Main Clock frequency selection
o 0: Run FOSC at 16MHz
o 1: Run FOSC at 8MHz
•
Bit 3,1,0: I2C sub-address
o I2C address = 0x44 OR SUB_ADDR
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Recommended communication and runtime flow diagram
The following is a basic master program flow diagram to communicate and handle the device. It
addresses possible device events such as output events, ATI and system events (resets).
POR
Reset
occured
Clear
Show_Reset
Show Reset?
Setup &
Initialization
No
Yes
ATI
IN ATI?
Yes
Runtime
No
No
Global Event?
System Event?
Yes
Valid event?
Yes
Retrieve
event data
Master command structure and runtime event handling flow diagram
It is recommended that the master verifies the status of the System_Flags0 bits to identify events
and resets. Detecting either one of these should prompt the master to the next steps of handling the
IQS621.
Streaming mode communication is used for detail sensor evaluation during prototyping and/or
development phases.
Event mode communication is recommended for runtime use of the IQS621. This reduce the
communication on the I2C bus and report only triggered events.
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9 Memory map
The full memory map is summarized below. Register groups are explained in the latter subsections.
Table 9.1
IQS621 Memory map index
Item Name
Full
Address
0x00
0x01
0x02
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
0x2C
0x2D
0x30
0x31
0x32
0x33
0x40
0x41
0x42
0x43
0x44
0x45
0x46
0x47
0x48
0x49
0x4A
0x4B
0x4C
0x4D
Group Name
Data Access
Product number
Software number
Hardware number
System flags
Global events
ProxFusion UI flags
Hysteresis UI flags
Hysteresis UI output 0
Hysteresis UI output 1
ALS flags
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Device information data
Flags and user interface data
ALS output low
ALS output high
Hall-effect UI flags
Hall-effect UI output 0
Hall-effect UI output 1
Temperature UI flags
Temperature output low
Temperature output high
Channel 0 counts low
Channel 0 counts high
Channel 1 counts low
Channel 1 counts high
Channel 2 counts low
Channel 2 counts high
Channel 3 counts low
Channel 3 counts high
Channel 4 counts low
Channel 4 counts high
Channel 5 counts low
Channel 5 counts high
Channel 6 counts low
Channel 6 counts high
Channel 0 LTA low
Channel 0 LTA high
Channel 1 LTA low
Channel 1 LTA high
ProxFusion settings 0_0
ProxFusion settings 0_1
ProxFusion settings 1_0
ProxFusion settings 1_1
ProxFusion settings 2_0
ProxFusion settings 2_1
ProxFusion settings 3_0
ProxFusion settings 3_1
ProxFusion settings 4
ProxFusion settings 5
Compensation Ch0
Compensation Ch1
Multipliers Ch0
Channel counts (raw data)
LTA values (filtered data)
ProxFusion sensor settings
Multipliers Ch1
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IQ Switch
ProxFusion® Series
0x50
0x51
0x52
0x53
0x54
0x60
0x61
0x62
0x63
0x70
0x71
0x72
0x73
0x80
0x81
0x82
0x83
0x90
0x91
0x92
0x93
0xA0
0xA1
0xA2
0xC0
0xC1
0xC2
0xC3
0xD0
0xD1
0xD2
0xD3
0xD4
0xD5
0xD6
0xD7
0xD8
0xD9
Prox threshold Ch0
Touch threshold Ch0
Prox threshold Ch1
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
Read-Write
ProxFusion UI settings
Touch threshold Ch1
ProxFusion UI halt time
Hysteresis UI settings
Hysteresis UI filter halt threshold
Hysteresis UI prox threshold
Hysteresis UI touch threshold
ALS settings 0
Hysteresis UI settings
ALS sensor settings
ALS UI settings
ALS settings 1
ALS filter speed
Multipliers Ch3 Ch4
ALS dark threshold
ALS light threshold
ALS to Lux divider
ALS IR divider
Hall-effect settings 0
Hall-effect settings 1
Hall sensor settings
Hall switch UI settings
Temperature UI settings
Compensation Ch4 and Ch5
Multipliers Ch4 and Ch5
Hall-effect switch UI settings
Hall-effect switch UI prox threshold
Hall-effect switch UI touch threshold
Temperature UI settings
Multipliers Ch2
Temperature calibration 0
Temperature calibration 1
System settings
Active channels
Power mode settings
Normal power mode report rate
Low power mode report rate
Ultra-low power mode report rate
Auto mode time
Device and power mode
settings
Global event mask
RDY timeout period
I2C settings
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IQ Switch
ProxFusion® Series
Device Information Data
Product number
Product number (0x00)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Device product number
Bit definitions:
•
Bit 7-0: Device product number
o 0x46 = D’70’: IQS621 product number
Software number
Software number (0x01)
Bit
Number
Data
7
6
5
4
3
2
1
0
R
R
R
R
R
R
R
R
Access
Name
Device software number
Bit definitions:
•
Bit 7-0: Device software number
o 0x09 = D’09’: IQS621 production software number
Hardware number
Hardware number (0x02)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Device hardware number
Bit definitions:
•
Bit 7-0: Device hardware number
o 0x82 = D’130’: IQS621 hardware number
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IQ Switch
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Flags and user interface data
System flags
System flags (0x10)
Bit
Number
Data
Access
7
6
-
5
-
4
3
2
R
1
R
0
R
R
R
R
SHOW
RESET
NP SEG
ACTIVE
Name
-
-
POWER MODE
IN ATI
EVENT
Bit definitions:
•
•
•
•
•
Bit 7: Reset indicator
o 0: No reset event
o 1: A device reset has occurred and needs to be acknowledged.
Bit 4-3: Current power-mode indicator
o 00: Normal mode
o 01: Low power mode
o 10: Ultra-low power mode
o 11: Halt Mode
Bit 2: ATI busy indicator
o 0: No channels are in ATI
o 1: One or more channels are in ATI
Bit 1: Global event indicator
o 0: No new event to service
o 1: An event has occurred and should be serviced
Bit 0: Normal power segment indicator
o 0: Not performing a normal power update
o 1: Busy performing a normal power update
Global events
Global events (0x11)
Bit
Number
Data
7
-
6
5
R
4
R
3
2
1
0
R
R
R
R
R
Access
POWER
MODE
EVENT
HYSTE-
RESIS UI
EVENT
PROX
SENSE
EVENT
SYS
TEMP
ALS
EVENT
HALL
EVENT
Name
-
EVENT EVENT
Bit definitions:
•
•
•
•
•
Bit 6: Power mode event flag
o 0: No event to report
o 1: A power mode event has occurred and should be handled
Bit 5: System event flag
o 0: No event to report
o 1: A System event has occurred and should be handled
Bit 4: Temperature event flag
o 0: No event to report
o 1: A Temperature event has occurred and should be handled
Bit 3: Hysteresis UI event flag
o 0: No event to report
o 1: A Hysteresis event has occurred and should be handled
Bit 2: ALS event flag
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IQ Switch
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o 0: No event to report
o 1: An ALS event has occurred and should be handled
Bit 1: Hall-effect event flag
o 0: No event to report
o 1: A Hall-effect event has occurred and should be handled
Bit 0: ProxSense event flag
•
•
o 0: No event to report
o 1: A capacitive key event has occurred and should be handled
ProxFusion UI flags
ProxFusion UI flags (0x12)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
Name
-
-
-
-
R
R
-
-
-
-
R
R
CH1_T
CH0_T
CH1_P
CH0_P
Bit definitions:
•
•
•
•
Bit 5: Ch1 touch indicator
o 0: Delta below touch threshold
o 1: Delta above touch threshold
Bit 4: Ch0 touch indicator
o 0: Delta below touch threshold
o 1: Delta above touch threshold
Bit 1: Ch1 proximity indicator
o 0: Delta below proximity threshold
o 1: Delta above proximity threshold
Bit 0: Ch0 proximity indicator
o 0: Delta below proximity threshold
o 1: Delta above proximity threshold.
Hysteresis UI flags
Hysteresis UI flags (0x13)
Bit
Number
Data
7
-
6
-
5
-
4
-
3
-
2
1
R
0
R
R
Access
Signed
output
Name
-
-
-
-
-
TOUCH
PROX
Bit definitions:
•
•
•
Bit 2: Delta direction signed output
o 0: Counts rise above the LTA
o 1: Counts fall below the LTA
Bit 1: Hysteresis UI touch indicator
o 0: Delta below touch threshold
o 1: Delta above touch threshold
Bit 0: Hysteresis proximity indicator
o 0: Delta below prox threshold
o 1: Delta above prox threshold
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IQ Switch
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Hysteresis UI output
Hysteresis UI output (0x14/0x15)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Hysteresis UI output low byte
Bit
Number
Data
Access
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Name
Hysteresis UI output high byte
Bit definitions:
•
Bit 15-0: Hysteresis UI output
o 0-65 535: Hysteresis UI output value
ALS UI flags
ALS UI flags (0x16)
Bit
Number
Data
7
6
-
5
4
3
2
1
0
R
-
-
R
R
R
R
Access
LIGHT /
DARK
Name
Reserved
ALS Range Value
Bit definitions:
•
Bit 7: Light/Dark
o 0: Light indication
o 1: Dark indication
•
Bit 3-0: ALS Range value
o 0-10 range value of ALS measurement
ALS UI output
ALS UI output (0x17/0x18)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Bit
Number
Data
ALS UI Output Low Byte
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Access
Name
ALS UI Output High Byte
Bit definitions:
•
Bit 15-0: ALS UI output
o 0-65 535: ALS UI output value in Lux
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IQ Switch
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Hall-effect UI flags
Hall-effect UI flags (0x19)
Bit
Number
Data
Access
7
-
6
5
-
4
-
3
-
2
R
1
R
0
-
-
R
HALL
N/S
Name
-
-
-
-
TOUCH
PROX
Bit definitions:
•
•
•
Bit 2: Hall-effect touch indicator
o 0: Field strength below touch level
o 1: Field strength above touch level
Bit 1: Hall-effect proximity indicator
o 0: Field strength below proximity level
o 1: Field strength above proximity level
Bit 0: Hall-effect North South Field indication
o 0: North field present
o 1: South field present
Hall-effect UI output
Hall-effect UI output (0x1A/0x1B)
Bit
Number
Data
Access
Name
Bit
Number
Data
7
6
5
4
3
2
1
0
R
R
R
R
R
R
R
R
Hall-effect UI output low byte
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Access
Name
Hall-effect UI output high byte
Bit definitions:
•
Bit 15-0: Hall-effect UI output
o 0-65 535: Hall-effect UI output value
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IQ Switch
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Temperature UI flags
Temperature UI flags (0x1C)
Bit
Number
Data
Access
7
6
-
5
-
4
-
3
-
2
-
1
-
0
-
R
TEMP
TRIP
Name
-
-
-
-
-
-
-
Bit definitions:
•
Bit 7: Temperature trip indicator
o 0: Temperature below trip level
o 1: Temperature above trip level
Temperature output
Temperature output (0x1D/0x1E)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
Temperature output low byte
Bit
Number
Data
Access
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Name
Temperature output high byte
Bit definitions:
•
Bit 15-0: Temperature output
o 0-65 535: Temperature output value
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IQ Switch
ProxFusion® Series
Channel counts (raw data)
Channel counts Ch0/1/2/3/4/5/6 (0x20/0x21-0x2C/0x2D)
Bit
Number
Data
Access
Name
Bit
Number
Data
7
6
5
4
3
2
1
0
R
R
R
R
R
R
R
R
Channel data low byte
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Access
Name
Channel data high byte
Bit definitions:
•
Bit 15-0: AC filter or raw count value
LTA values (filtered data)
LTA Ch0/1 (0x30/0x31-0x32/0x33)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R
R
R
R
R
R
R
R
Name
LTA low byte
Bit
Number
Data
Access
15
R
14
R
13
R
12
R
11
R
10
R
9
8
R
R
Name
LTA high byte
Bit definitions:
•
Bit 15-0: LTA filter value
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IQ Switch
ProxFusion® Series
ProxFusion sensor settings block 1
ProxFusion settings 0
9.6.1.1 Capacitive sensing
ProxFusion settings 0_0/1 (0x40-0x41)
Bit
Number
Data
7
6
5
-
4
-
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
Access
Capacitive sensor
mode
Internal Internal
Name
TX SELECT
RX SELECT
use
use
Fixed
value
0
0
0
0
0
0
0
1
Bit definitions:
•
•
•
Bit 6-7: Sensor mode
o 00: Capacitive sensing mode
Bit 3-2: TX Select
o 00: TX 0 and TX 1 is disabled
Bit 0-1: RX select
o 00: RX 0 and RX 1 is disabled
o 01: RX 0 is enabled
o 10: RX 1 is enabled
o 11: RX 0 and RX 1 is enabled
9.6.1.2 Inductive sensing
ProxFusion settings 0_1 (0x41)
Bit
Number
Data
7
6
5
-
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Inductive sensor
mode
Internal Multiplier
Name
TX SELECT
RX SELECT
use
range
Fixed
value
1
0
0
0
0
1
1
Bit definitions:
•
•
•
•
Bit 7-6: Sensor mode
o 10: Inductive sensor mode
Bit 4: Multiplier range
o 0: Large
Bit 3-2: TX Select
o 1: Small
o 00: TX 0 and TX 1 is disabled
Bit 1-0: RX Select
o 11: RX 0 and RX 1 is enabled
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IQ Switch
ProxFusion® Series
ProxFusion settings 1
9.6.2.1 Capacitive sensing
ProxFusion settings 1_0/1 (0x42-0x43)
Bit
Number
Data
Access
7
6
5
4
3
-
2
-
1
0
-
-
R/W
CSz
R/W
R/W
R/W
R/W
Name
CHARGE FREQ
0x67
Internal use
AUTO ATI MODE
Default
0
1
1
0
0
1
1
1
Bit definitions:
•
•
•
Bit 6: CS size
o 0: Prox storage capacitor size is 15 pF
o 1: Prox storage capacitor size is 60 pF
Bit 5-4: Charge frequency divider
o 00: 1/2
o 10: 1/8
o 11: 1/16
o 01: 1/4
Bit 1-0: Auto ATI Mode
o 00: ATI disabled
o 01: Partial ATI (all multipliers are fixed)
o 10: Semi-partial ATI (coarse multipliers are fixed)
o 11: Full-ATI
9.6.2.2 Inductive sensing
ProxFusion settings 1_1 (0x43)
Bit
Number
Data
Access
Name
7
6
5
4
3
2
1
0
-
-
R/W
CSz
R/W
R/W
R/W
R/W
R/W
R/W
CHARGE FREQ
0x4F
PROJ BIAS
AUTO ATI MODE
Fixed
use
0
1
0
0
1
1
1
1
Bit definitions:
•
•
•
•
Bit 6: CS size
o 0: Prox storage capacitor size is 15pF
o 1: Prox storage capacitor size is 60pF
Bit 5-4: Charge frequency divider
o 00: 1/2
o 10: 1/8
o 11: 1/16
o 01: 1/4
Bit 3-2: Projected bias / Internal resistor (all modes except prox)
o 00: 2.5µA / 88kΩ
o 01: 5µA / 66kΩ
Bit 1-0: Auto ATI Mode
o 10: 10µA / 44kΩ
o 11: 20µA / 22kΩ
o 00: ATI disabled
o 01: Partial ATI (all multipliers are fixed)
o 10: Semi-Partial ATI (coarse multipliers are fixed)
o 11: Full-ATI
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IQ Switch
ProxFusion® Series
ProxFusion settings 2
9.6.3.1 Capacitive sensing
ProxFusion settings 2_0/1 (0x44 - 0x45)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
ATI BASE
ATI TARGET (x32)
0xD0
Default
1
1
0
1
0
0
0
0
Bit definitions:
•
Bit 7-6: Auto ATI base value
o 00: 75
o 10: 150
o 11: 200
o 01: 100
•
Bit 5-0: Auto ATI Target
o ATI Target is 6-bit value x 32
9.6.3.2 Inductive sensing
ProxFusion settings 2_1 (0x45)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
ATI BASE
ATI TARGET (x32)
0xD0
Default
1
1
0
1
0
0
0
0
Bit definitions:
•
Bit 7-6: Auto ATI base value
o 00: 75
o 01: 100
o 10: 150
o 11: 200
•
Bit 5-0: Auto ATI Target
o ATI Target is 6-bit value x 32
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IQ Switch
ProxFusion® Series
ProxFusion settings 3
9.6.4.1 Capacitive sensing
ProxFusion settings 3_0/1 (0x46-0x47)
Bit
Number
Data
Access
7
6
5
4
-
3
2
1
0
-
R/W
R/W
R/W
R/W
R/W
R/W
UP
LENGTH
EN
UP LENGTH
SELECT
Internal
use
Name
CS DIV
0
PASS LENGTH
-
0x06
Default
0
0
0
0
1
1
0
Bit definitions:
•
Bit 7-6: Up Length Select (requires UP_LENGTH_EN = 1 for use)
o 00: Up length = 0010
o 01: Up length = 0110
Bit 5: CS divider
o 0: Normal CS cap size
Bit 3: Up length select enable
o 0: Up length select is disabled
o 10: Up length = 1010
o 11: Up length = 1110
•
•
o 1: CS cap size 5 times smaller
o 1: Up length select is enabled (value in bit 7-6 is used)
•
Bit 2-1: Pass length select
o 00: Pass length = 001
o 01: Pass length = 011
o 10: Pass length = 101
o 11: Pass length = 111
9.6.4.2 Inductive sensing
ProxFusion settings 3_1 (0x47)
Bit
Number
Data
7
6
5
4
-
3
2
1
0
-
R/W
R/W
R/W
R/W
R/W
R/W
Access
UP
LENGTH
EN
UP LENGTH
SELECT
Internal
use
Name
CS DIV
1
PASS LENGTH
-
0x36
Fixed
use
0
0
1
0
1
1
0
Bit definitions:
•
Bit 7-6: Up length select (requires UP_LENGTH_EN = 1 for use)
o 00: Up length = 0010
o 01: Up length = 0110
Bit 5: CS divider
o 0: Normal CS cap size
Bit 3: Up length select enable
o 0: Up length select is disabled
o 10: Up length = 1010
o 11: Up length = 1110
•
•
o 1: CS cap size 5 times smaller
o 1: Up length select is enabled (value in bit 7-6 is used)
•
Bit 2-1: Pass length select
o 00: Pass length = 001
o 01: Pass length = 011
o 10: Pass length = 101
o 11: Pass length = 111
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IQ Switch
ProxFusion® Series
ProxFusion settings 4
9.6.5.1 Capacitive sensing
ProxFusion settings 4 (0x48)
Bit
Number
Data
Access
7
-
6
-
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
TWO
SIDED
EN
Internal
use
ACF
DISABLE
Name
-
LTA BETA
ACF BETA
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
Bit 5: Two-sided detection
o 0: Bidirectional detection
disabled
o 1: Bidirectional detection
enabled
•
•
•
Bit 4: Disable AC Filter
o 0: AC filter enabled
Bit 3-2: Long term average beta value
o 1: AC filter disabled
o 00: 7
o 01: 8
o 10: 9
o 10: 3
o 11: 10
o 11: 4
Bit 1-0: AC filter beta value
o 00: 1
o 01: 2
9.6.5.2 Inductive sensing
ProxFusion settings 4 (0x48)
Bit
Number
Data
7
-
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
HYSTE-
RESIS UI SIDED
TWO
ACF
DISABLE
Name
-
LTA BETA
ACF BETA
EN
EN
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
Bit 6: Hysteresis UI enable
o 0: Hysteresis UI is disabled
Bit 5: Two-sided detection
o 0: Bidirectional detection
disabled
o 1: Hysteresis UI is enabled
•
o 1: Bidirectional detection
enabled
•
•
•
Bit 4: Disable AC filter
o 0: AC filter enabled
Bit 3-2: Long term average beta value
o 1: AC filter disabled
o 00: 7
o 01: 8
o 10: 9
o 10: 3
o 11: 10
Bit 1-0: AC filter beta value
o 00: 1
o 01: 2
o 11: 4
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IQ Switch
ProxFusion® Series
ProxFusion settings 5
ProxFusion settings 5 (0x49)
Bit
Number
Data
Access
7
-
6
-
5
-
4
-
3
-
2
-
1
-
0
-
Name
Internal use
0x01
Default
0
0
0
0
0
0
0
1
Bit definitions:
•
Bit 7-0: Internal use
Compensation
Compensation Ch0/1/2/3 (0x4A - 0x4B)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Compensation (0-7)
Bit definitions:
•
Bit 7-0: Compensation (7-0)
o 0-255: Lower 8-bits of the Compensation value.
Multipliers
Multipliers Ch0/1/2/3 (0x4C-0x4D)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Compensation (8-9)
Multiplier coarse
Multiplier fine
Bit definitions:
•
•
•
Bit 7-6: Compensation (8-9)
o 0-3: Upper 2-bits of the Compensation value.
Bit 5-4: Multiplier coarse
o 0-3: Coarse multiplier selection
Bit 3-0: Multiplier fine
o 0-15: Fine multiplier selection
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IQ Switch
ProxFusion® Series
ProxFusion UI settings
Prox threshold Ch0/1
Prox Threshold Ch0/1 (0x50/0x52)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Prox threshold value
0x16 = D’22
Default
0
0
0
1
0
1
1
0
Bit definitions:
•
Bit 7-0: Prox threshold = Prox threshold value
Touch threshold Ch0/1
Touch Threshold Ch0/1 (0x51/0x53)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Touch threshold value
0x20 = D’32
Default
0
0
1
0
0
0
0
0
Bit definitions:
•
Bit 7-0: Touch threshold = Touch threshold value * LTA/256
ProxFusion discrete UI halt time
ProxFusion discrete UI halt time (0x54)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Halt time
0x28 = D’40 * 500ms = 20sec
Default
0
0
1
0
0
0
0
0
Bit definitions:
•
Bit 7-0: Halt time in 500ms increments (decimal value x 500ms)
o 0 – 127sec: ProxFusion discrete UI halt time
o 0xFF = 255: Always halt filters
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IQ Switch
ProxFusion® Series
Hysteresis UI settings
Hysteresis UI settings
Hysteresis UI settings (0x60)
Bit
Number
Data
Access
Name
7
6
5
4
3
2
1
0
-
-
-
-
R/W
R/W
-
-
-
-
R/W
R/W
Hysteresis_T
Hysteresis_P
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
Bit 5-4: Touch hysteresis
o 00: Disabled
o 10: 1/8 of threshold
o 11: 1/16 of threshold
o 01: 1/4 of threshold
Bit 1-0: Proximity hysteresis
o 00: Disabled
•
o 10: 1/8 of threshold
o 11: 1/16 of threshold
o 01: 1/4 of threshold
Hysteresis UI filter halt threshold
Hysteresis UI filter halt threshold (0x61)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Hysteresis UI filter halt threshold value
0x01 = D’01
Default
0
0
0
0
0
0
0
1
Bit definitions:
•
Bit 7-0: Hysteresis UI filter halt threshold
o 0-255: Hysteresis UI filter halt threshold value
Hysteresis UI proximity threshold
Hysteresis UI proximity threshold (0x62)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Proximity threshold value
0x16 = D’22
Default
0
0
0
1
0
1
1
0
Bit definitions:
•
Bit 7-0: Proximity threshold
o 0-255: Proximity threshold value
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IQ Switch
ProxFusion® Series
Hysteresis UI touch threshold
Hysteresis UI touch threshold (0x63)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Touch threshold value
0x20 = D’32 * 4 = 128
Default
0
0
1
0
0
0
0
0
Bit definitions:
•
Bit 7-0: Touch threshold
o 0-1020: Touch threshold value * 4
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IQ Switch
ProxFusion® Series
ALS sensor settings
ALS settings 0
ALS settings 0 (0x70)
Bit
Number
Data
Access
7
-
6
-
5
4
3
2
1
-
0
-
R/W
R/W
R/W
R/W
CSz
Internal
use
INC
DELAY
Name
-
CHARGE FREQ
0x04
-
-
Default
0
0
0
0
0
1
0
0
Bit definitions:
•
Bit 5-4: Charge frequency divider
o 00: 1/2
o 01: 1/4
o 10: 1/8
o 11: 1/16
•
Bit 3: Inc Delay
o 0: Pre-charge delay is at default
o 1: Increase pre-charge delay to improve low light performance
•
Bit 2: CS divider size
o 0: CS capacitor size 15pF
o 1: CS capacitor size 60pF
ALS settings 1
ALS settings 1 (0x71)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
MULTIPLIER
CALIBRATION
Name
ATI Target (x32)
0x80
Default
1
0
0
0
0
0
0
0
Bit definitions:
•
Bit 7-2: ATI target for ALS Ch4
o 0-2016: ATI target Ch4 = ATI target value value x 32
•
Bit 1-0: Multiplier calibration
o 0-3: Multiplier calibration size for ALS sensor calibration
ALS settings filter speed
ALS settings filter speed (0x72)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
ALS settings filter speed
0x07 = D’7
Default
0
0
0
0
0
1
1
1
Bit definitions:
•
Bit 7-0: ALS settings filter speed
o 0: Both filter stages are disabled
o 1: Only the IIR filter is enabled
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IQ Switch
ProxFusion® Series
o 2-255: Windowed minima filter (with window length of 2-255) and the IIR is enabled
Multipliers Ch3/4
Multipliers Ch3/4 (0x73)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
MULTIPLIER
COARSE
Name
-
MULIPLIER FINE
Bit definitions:
•
Bit 5-4: Multiplier coarse
o 0-3: Coarse multiplier selection
Bit 3-0: Multiplier fine
•
o 0-15: Fine multiplier selection
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IQ Switch
ProxFusion® Series
ALS UI settings
ALS dark threshold
ALS dark threshold (0x80)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
ALS dark threshold x4 (Lux)
0x0A = D’10 * 4 = 40 Lux
Default
0
0
0
0
1
0
1
0
Bit definitions:
•
Bit 7-0: Dark threshold = Dark threshold value x4
ALS light threshold
ALS light threshold (0x81)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
ALS Light Threshold x16 (Lux)
0x0A = D’10 * 16 = 160 Lux
Default
0
0
0
0
1
0
1
0
Bit definitions:
•
Bit 7-0: Light Threshold = Light Threshold value x16
ALS raw to Lux divider
ALS raw to Lux divider (0x82)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
ALS raw to Lux divider
Bit definitions:
•
Bit 7-0: ALS raw to Lux divider = ALS raw to Lux divider value (The default value is loaded
from OTP Bank 2, 0 disables divider)
ALS IR compensation
ALS IR compensation (0x83)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
ALS IR compensation divider
Bit definitions:
•
•
Bit 0-7: ALS IR compensation divider = ALS IR compensation divider value.
The default value is loaded from OTP:
o For IQS621: a 6-bit value stored in OTP Bank 0 (bit 5 & 4) & OTP Bank 3 (bit 3 – 0)
o A value equal to 0 disables the divider.
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IQ Switch
ProxFusion® Series
Hall-effect sensor settings
Hall-effect settings 0
Hall-effect settings 0 (0x90)
Bit
Number
Data
Access
7
6
5
4
3
-
2
-
1
0
-
-
-
-
R/W
R/W
R/W
R/W
Name
CHARGE FREQ
reserved
AUTO ATI MODE
0x03
Default
0
0
0
0
0
0
1
1
Bit definitions:
•
Bit 0-1: Auto ATI Mode
o 00: ATI disabled
o 01: Partial ATI (all multipliers are fixed)
o 10: Semi-Partial ATI (only coarse multipliers are fixed)
o 11: Full-ATI
•
Bit 4-5: Charge frequency divider
o 00: 1/2
o 01: 1/4
o 10: 1/8
o 11: 1/16
Hall-effect settings 1
Hall-effect settings 1 (0x91)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
ATI_BASE
ATI_TARGET (x32)
0x50
Default
0
1
0
1
0
0
0
0
Bit definitions:
•
Bit 0-5: Auto ATI Target
o 0-2016: ATI Target = ATI target 6-bit value x 32
•
Bit 6-7: Auto ATI base value
o 00: 75
o 10: 150
o 11: 200
o 01: 100
Compensation Ch4/5
Compensation Ch5/6 (0x92)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Compensation (7-0)
Bit definitions:
•
Bit 7-0: Compensation (7-0)
o 7-0: Lower 8-bits of the Compensation value.
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IQ Switch
ProxFusion® Series
Multipliers Ch4/5
Multipliers Ch5/6 (0x93)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Compensation (9-8)
Multipliers coarse
Multipliers fine
Bit definitions:
•
•
•
Bit 7-6: Compensation (9-8)
o 0-3: Upper 2-bits of the Compensation value.
Bit 5-4: Multipliers coarse
o 0-3: Coarse multiplier selection
Bit 3-0: Multipliers fine
o 0-15: Fine multiplier selection
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IQ Switch
ProxFusion® Series
Hall-effect switch UI settings
Hall-effect UI settings
Hall-effect UI settings (0xA0)
Bit
Number
Data
Access
7
-
6
5
4
3
-
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
Swap
Direction
Name
Lin Mode
Hysteresis T
-
Hysteresis P
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
Bit 6: Linearize output
o 0: Disabled
o 1: Enabled
•
Bit 4-5: Touch hysteresis
o 00: Disabled
o 10: 1/8 of threshold
o 11: 1/16 of threshold
o 01: 1/4 of threshold
•
•
Bit 2: Swap field direction indication
o 0: Disabled
Bit 0-1: Proximity hysteresis
o 00: Disabled
o 1: Enabled
o 10: 1/8 of threshold
o 11: 1/16 of threshold
o 01: 1/4 of threshold
Hall-effect UI proximity threshold
Hall-effect UI proximity threshold (0xA1)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Proximity threshold value
0x19 = D’25
Default
0
0
0
1
1
0
0
1
Bit definitions:
•
Bit 0-7: Hall-effect UI proximity threshold
o 0-255: Hall-effect UI Proximity Threshold = Proximity threshold value
Hall-effect UI touch threshold
Hall-effect UI touch threshold (0xA2)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Touch threshold value
0x19 = D’25 * 4 = 100
Default
0
0
0
1
1
0
0
1
Bit definitions:
•
Bit 0-7: Hall-effect UI touch threshold
o 0-1020: Hall-effect touch threshold = Touch threshold value * 4
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IQ Switch
ProxFusion® Series
Temperature monitoring UI settings
Temperature UI settings
Temperature UI settings (0xC0)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RESEED RESEED
Name
reserved
RESEED THRESHOLD
IN PROX
EN
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
•
•
Bit 6: Allow temperature channel to reseed channel 0 and 1 while in proximity
o 0: Reseed in prox disabled
Bit 5: Temperature reseed of channel 0 and 1 enable
o 0: Reseed is disabled
o 1: Reseed in prox enabled
o 1: Reseed is enabled
Bit 4-0: Temperature reseed threshold = Temperature reseed threshold value
Multiplier channel 2
Multiplier Ch2 (0xC1)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
Name
R/W
-
R/W
-
R/W
R/W
R/W
R/W
R/W
R/W
Multiplier coarse
Multiplier fine
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
Bit 5-4: Multiplier coarse
o 0-3: Coarse multiplier selection
Bit 3-0: Multiplier fine
•
o 0-15: Fine multiplier selection
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IQ Switch
ProxFusion® Series
Temperature calibration 0
Temperature calibration 0 (0xC2)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Temperature multiplier
Temperature divider
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
Bit 7-4: Temperature multiplier = Temperature multiplier value +1
o 1-16: Temperature multiplier
•
Bit 3-0: Temperature divider = Temperature divider value +1
o 1-16: Temperature divider
Temperature calibration 1
Temperature calibration 1 (0xC3)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
Temperature offset
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
Bit 7-0: Temperature offset = Temperature offset value
o 0-255: Temperature offset
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IQ Switch
ProxFusion® Series
Device and power mode settings
System settings
System settings (0xD0)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
W=1
W=1
R/W
R/W
8MHz
R/W
R/W
W=1
W=1
SOFT
RESET
ACK
RESET
EVENT
MODE
COMMS
ATI
ATI
BAND
REDO
ATI
Name
RESEED
0x08
Default
0
0
0
0
1
0
0
0
Bit definitions:
•
Bit 7: Software Reset (Set only, will clear when done)
o 1: Causes the device to perform a WDT reset
Bit 6: ACK Reset (Set only, will clear when done)
•
o 1: Acknowledge that a reset has occurred. This event will trigger until
acknowledged.
•
•
•
•
Bit 5: Event mode enable
o 0: Event mode disabled. Default streaming mode communication.
o 1: Event mode communication enabled.
Bit 4: Main Clock frequency selection
o 0: Run FOSC at 16MHz
o 1: Run FOSC at 8MHz
Bit 3: Communications during ATI
o 0: No communications are generated during ATI
o 1: Communication continue as setup regardless of ATI state.
Bit 2: Re-ATI Band selection
o 0: Re-ATI when outside 1/8 of ATI target
o 1: Re-ATI when outside 1/16 of ATI target
Bit 1: Redo ATI on all channels (Set only, will clear when done)
o 1: Redo the ATI on all channels
•
•
Bit 0: Reseed all Long-term filters (Set only, will clear when done)
o 1: Reseed all channels
Active channels
Active channels (0xD1)
Bit
Number
Data
Access
Name
7
6
5
4
3
2
1
0
-
-
R/W
Ch6
R/W
Ch5
R/W
Ch4
R/W
Ch3
R/W
Ch2
R/W
Ch1
R/W
Ch0
0x7F
Default
0
1
1
1
1
1
1
1
Bit definitions:
•
Bit 6: Ch6 (note: Ch5 and Ch6 must both be enabled for Hall-effect switch UI to be
functional)
o 0: Channel is disabled
o 1: Channel is enabled
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IQ Switch
ProxFusion® Series
•
Bit 5: Ch5 (note: Ch5 and Ch6 must both be enabled for Hall-effect switch UI to be
functional)
o 0: Channel is disabled
Bit 4: Ch4 (note: Ch3 and Ch4 must both be enabled for ALS UI to be functional)
o 0: Channel is disabled o 1: Channel is enabled
Bit 3: Ch3 (note: Ch3 and Ch4 must both be enabled for ALS UI to be functional)
o 0: Channel is disabled o 1: Channel is enabled
Bit 2: Ch2 (note: Ch2 must be enabled for temperature UI to be functional)
o 1: Channel is enabled
•
•
•
•
•
o 0: Channel is disabled
Bit 1: Ch1
o 0: Channel is disabled
Bit 0: Ch0
o 1: Channel is enabled
o 1: Channel is enabled
o 1: Channel is enabled
o 0: Channel is disabled
Power mode settings
Power mode settings (0xD2)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DSBL
AUTO
MODE
NP SEG EN ULP
Name
POWER MODE
0x03
NP SEG RATE
1
ALL
MODE
Default
0
0
0
0
0
0
1
Bit definitions:
•
•
•
•
Bit 7: Normal Power Segment bounds check
o 0: NP-segment check on PRX channels only
o 1: NP-segment check on all channels
Bit 6: Allow auto ultra-low power mode switching
o 0: ULP is disabled during auto-mode switching
o 1: U LP is enabled during auto-mode switching
Bit 5: Disable auto mode switching
o 0: Auto mode switching is enabled
o 1: Auto mode switching is disabled
Bit 4-3: Manually select power mode (note: bit 5 must be set)
o 00: Normal Power mode. The device runs at the normal power rate, all enabled
channels and UIs will execute.
o 01: Low Power mode. The device runs at the low power rate, all enabled channels
and UIs will execute.
o 10: Ultra-Low Power mode. The device runs at the ultra-low power rate, Ch0 is run
as wake-up channel. The other channels execute at the NP-segment rate.
o 11: Halt Mode. No conversions are performed; the device must be removed from
this mode using an I2C command.
•
Bit 2-0: Normal power segment update rate
o 000: ½ ULP rate
o 001: ¼ ULP rate
o 010: 1/8 ULP rate
o 011: 1/16 ULP rate
o 100: 1/32 ULP rate
o 101: 1/64 ULP rate
o 110: 1/128 ULP rate
o 111: 1/256 ULP rate
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IQ Switch
ProxFusion® Series
Normal power mode report rate
Normal power mode report rate (0xD3)
Bit
7
6
5
4
3
2
1
0
Number
Data
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Normal power mode report rate in ms
0x0C = D’12 = 12ms
Default
0
0
0
0
1
1
0
0
Bit definitions:
•
Bit 7-0: Normal mode report rate in ms (note: LPOSC timer has ± 4ms accuracy)
o 0 – 255ms: Normal mode report rate
Please note: Report rates faster than 4ms can be delayed due to channel setup and comm speed.
Low power mode report rate
Low power mode report rate (0xD4)
Bit
7
6
5
4
3
2
1
0
Number
Data
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Low power mode report rate in ms
0x30 = D’48 = 48ms
Default
0
0
1
1
0
0
0
0
Bit definitions:
•
Bit 7-0: Low-power mode report rate in ms (note: LPOSC timer has ± 4ms accuracy)
o 0 – 255ms: Low-power mode report rate
Ultra-low power mode report rate
Ultra-low power mode report rate (0xD5)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Ultra-low power mode report rate in 16ms increments
0x08 = D’8 * 16 = 128ms
Default
0
0
0
0
1
0
0
0
Bit definitions:
•
Bit 7-0: Ultra-low power mode report rate in 16ms increments (decimal value x 16ms)
o 0 – 4080ms: Ultra-low power mode report rate
Auto mode timer
Auto mode timer (0xD6)
Bit
Number
Data
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Access
Name
Auto mode timer in 500ms increments
0x14 = D’20 * 500 = 10sec
Default
0
0
0
1
0
1
0
0
Bit definitions:
•
Bit 7-0: Auto modes switching time in 500ms increments (decimal value x 500ms)
o 0 – 127.5s: Auto mode switching time
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Global event mask
Global event mask (0xD7)
Bit
Number
Data
Access
7
-
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POWER
MODE
EVENT
HYSTE-
RESIS UI
EVENT
PROX
SENSE
EVENT
SYS
TEMP
ALS
EVENT
HALL
EVENT
Name
-
EVENT EVENT
0x00
Default
0
0
0
0
0
0
0
0
Bit definitions:
•
•
•
•
•
•
•
Bit 6: Power mode event mask
o 0: Event is allowed
Bit 5: System event mask
o 0: Event is allowed
Bit 4: Temperature event mask
o 0: Event is allowed
o 1: Event is masked
o 1: Event is masked
o 1: Event is masked
o 1: Event is masked
o 1: Event is masked
o 1: Event is masked
o 1: Event is masked
Bit 3: Hysteresis UI event mask
o 0: Event is allowed
Bit 2: ALS UI event mask
o 0: Event is allowed
Bit 1: Hall-effect UI event mask
o 0: Event is allowed
Bit 0: ProxSense event mask
o 0: Event is allowed
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RDY timeout period
RDY timeout period (0xD8)
Bit
Number
7
6
5
4
3
2
1
0
Data
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Name
RDY timeout period value
0x20 = D’32 * 0.32 = 10.24ms
Default
0
0
1
0
0
0
0
0
Bit definitions:
•
Bit 7-0: RDY timeout period = RDY timeout period value * 0.32ms
o 0 – 81.6ms: RDY timeout period
I2C settings
I2C settings (0xD9)
Bit
Number
Data
7
6
-
5
-
4
-
3
-
2
-
1
-
0
R/W
R/W
Access
STOP
DISABLE
Name
Reserved
0x01
Reserve
Default
0
0
0
0
0
0
0
1
Bit definitions:
•
Bit 7: Stop disable
o 0: Stop enabled: Stop bit will exit the communication window.
o 1: Stop disabled: Stop bit will not exit the communication window. No start within the
RDY timeout period (0xD8) will exit the communication window.
Bit 6 – 1: Reserved
o Do not configure, leave cleared.
Bit 0: Reserved
•
•
o Must always be set (bit 0 = 1).
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10 Electrical characteristics
Absolute Maximum Specifications
The following absolute maximum parameters are specified for the device:
Exceeding these maximum specifications may cause damage to the device.
Table 10.1 Absolute maximum specification
Absolute maximum
Parameter
Operating temperature
-20°C to +85°C
Supply Voltage (VDDHI – GND)
Maximum pin voltage
3.6V
VDDHI + 0.5V (may not exceed VDDHI max)
Maximum continuous current (for specific pins)
Minimum pin voltage
10mA
GND - 0.5V
Minimum power-on slope
ESD protection
100V/s
±4kV (Human body model)
Voltage regulation specifications
Table 10.2 Internal voltage regulator operating conditions
SYMBOL
VDDHI
VREG
MIN
1.8
TYPICAL
MAX
3.3
UNIT
V
DESCRIPTION
Supply voltage
-
Internal voltage regulator
1.63
1.66
1.69
V
Reset conditions
Table 10.3 Device reset specifications
Explanation
SYMBOL
MIN
MAX UNIT
DESCRIPTION
VDDHI rising level to ensure
active state startup
Reset - VDDHI rising level
RESETVDDHI
↑
-
1.55
VDDHI falling level to
ensure reset
Reset - VDDHI falling level
Reset - VREG falling level
RESETVDDHI
↓
0.70
0.65
-
V
VREG falling level for reset
during LP & ULP modes
RESETVREG
↓
1.41
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I2C module output logic fall time limits
Table 10.4 I2C module output logic fall time specifications
VDDHI Temp
Pull-up
CLOAD
SYMBOL
MIN
MAX
UNIT
DESCRIPTION
(V)
(°C) resistor (Ω) (pF)
7000
885
7000
885
7000
885
7000
885
7000
885
7000
885
420
420
420
420
420
420
770
770
770
885
770
770
50
400
50
11.80
28.70
11.80
30.70
11.80
33.80
7.90
-20
+25
+85
-20
1.8
400
50
SDA & SCL
minimum fall
times
400
50
TF_min
400
50
18.60
11.80
30.70
11.80
33.80
3.3
1.8
3.3
+25
+85
-20
400
50
400
50
ns
42.50
65.10
43.40
69.70
45.30
77.30
20.20
32.80
19.90
34.30
20.00
36.80
400
50
+25
+85
-20
400
50
SDA & SCL
maximum fall
times
400
50
TF_max
400
50
+25
+85
400
50
400
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I2C module slew rates
Table 10.5 I2C module fastest falling slew rates and matching rising slew rates
VDDHI
(V)
Fall time Rise time
Conditions
SYMBOL
SR
UNIT
DESCRIPTION
(ns)
(ns)
CBUS = 50pF
RPU = 7kΩ
TA = -20°C
11.80
SRFALL
61.02
SDA & SCL
slew rates for
the minimum
allowed bus
capacitance
1.8
3.3
1.8
3.3
296.55
SRRISE
SRFALL
SRRISE
SRFALL
SRRISE
SRFALL
SRRISE
2.43
167.09
4.45
CBUS = 50pF
RPU = 7kΩ
TA = -20°C
7.90
28.70
18.60
296.55
299.94
299.94
V
⁄
µs
CBUS = 400pF
RPU = 885Ω
TA = -20°C
25.09
2.40
SDA & SCL
slew rates for
the maximum
allowed bus
capacitance
CBUS = 400pF
RPU = 885Ω
TA = -20°C
70.97
4.40
Table 10.6 I2C module slowest falling slew rates and matching rising slew rates
VDDHI
(V)
Fall time Rise time
Conditions
SYMBOL
SRFALL
SRRISE
SR
UNIT
DESCRIPTION
(ns)
(ns)
CBUS = 50pF
RPU = 420Ω
TA = +85°C
45.30
15.89
40.47
65.35
40.47
SDA & SCL
slew rates for
the minimum
allowed bus
capacitance
1.8
3.3
1.8
3.3
17.79
CBUS = 50pF
RPU = 770Ω
TA = -20°C
20.20
77.30
36.80
SRFALL
SRRISE
32.62
142.34
260.96
V
⁄
µs
CBUS = 400pF
RPU = 420Ω
TA = +85°C
SRFALL
SRRISE
SRFALL
SRRISE
9.31
5.06
SDA & SCL
slew rates for
the maximum
allowed bus
capacitance
CBUS = 400pF
RPU = 770Ω
TA = +85°C
35.87
5.06
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I2C pins (SCL & SDA) input/output logic levels
Table 10.7 I2C pins (SCL & SDA) input and output logic level boundaries
Temperature
-20°C
TYP
Conditions SYMBOL
MIN
MAX
UNIT
DESCRIPTION
32.12
Input low level
voltage
Vin_LOW
+25°C
34.84
+85°C
39.39
71.51
-20°C
400kHz I2C
clock
frequency
Input high level
voltage
% of
VDDHI
Vin_HIGH
+25°C
68.18
+85°C
66.06
Output low level
voltage
Vout_LOW
Vout_HIGH
-20°C – +85°C
-20°C – +85°C
0
Output high
level voltage
100
Calculated input buffer trigger levels for I2C pins at 400kHz clock frequency
for 1.8V and 3.3V VDDHI power supplies
General purpose digital output pins (GPIO0 & GPIO3) logic levels
Temperature
-20°C – +85°C
-20°C – +85°C
TYP
0
SYMBOL
Vout_LOW
MIN
MAX
UNIT
DESCRIPTION
Output low level voltage
% of
VDDHI
Output high level voltage
Vout_HIGH
100
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Current consumptions
IC subsystems
Table 10.8 IC subsystem current consumption
TYPICAL MAX UNIT
Description
Core active
Core sleep
339
377
1
µA
µA
0.63
Table 10.9 IC subsystem typical timing
Core active
Core sleep TOTAL UNIT
Power mode
NP mode
LP mode
ULP mode
5
5
5
10
48
ms
ms
ms
43
1.75
128
129.75
Capacitive sensing alone
Table 10.10 Capacitive sensing current consumption
Conditions
Report rate
MIN
TYPICAL
MAX
UNIT
Power mode
NP mode
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
72.54
73.09
20.94
19.96
4.95
73.40
73.53
21.38
20.71
5.54
74.08
73.97
21.79
21.20
6.01
µA
µA
µA
µA
µA
µA
10ms
LP mode
48ms
ULP mode
128ms
4.34
4.88
5.24
-These measurements where done on the default setup of the IC
Table 10.11 Single capacitive wake-up channel current consumption
Supply
voltage
VDD = 1.8V
VDD = 3.3V
Charging
frequency
ATI
target
192
192
Report rate
TYPICAL UNIT
Power mode
ULP mode
2MHz
2MHz
256ms
256ms
2.51
A
2.76
-These measurements where done with enhanced settings for minimum current consumption for a single touch channel
Inductive sensing alone
Table 10.12 Inductive sensing current consumption
Conditions
Report rate
MIN
TYPICAL
MAX
UNIT
Power mode
NP mode
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
75.31
76.45
21.14
21.68
N/A (1)
N/A (1)
75.85
76.88
21.83
22.36
N/A (1)
N/A (1)
76.48
77.53
30.91
23.46
N/A (1)
N/A (1)
µA
µA
µA
µA
µA
µA
10ms
LP mode
48ms
ULP mode
128ms
-These measurements where done on the default setup of the IC
(1) It is not advised to use the IQS621 in ULP without capacitive sensing. This is due to the inductive sensor being
disabled in ULP.
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ALS sensing alone
Table 10.13 Ambient light sensing current consumption
Conditions
Report rate
MIN
TYPICAL
MAX
UNIT
Power mode
NP mode
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
60.89
55.62
17.52
15.42
N/A (1)
N/A (1)
61.56
57.79
18.03
16.52
N/A (1)
N/A (1)
62.01
58.47
18.45
17.13
N/A (1)
N/A (1)
µA
µA
µA
µA
µA
µA
10ms
LP mode
48ms
ULP mode
128ms
-These measurements where done on the default setup of the IC and in 300 Lux ambient light
(2) It is not advised to use the IQS621 in ULP without capacitive sensing due to the ALS sensor disabled in ULP.
Hall-effect sensing alone
Table 10.14 Hall-effect current consumption
Conditions
Report rate
MIN
TYPICAL
MAX
UNIT
Power mode
NP mode
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
93.49
92.63
26.03
25.11
N/A (1)
N/A (1)
93.73
92.97
26.71
25.88
N/A (1)
N/A (1)
93.96
93.79
27.28
26.45
N/A (1)
N/A (1)
µA
µA
µA
µA
µA
µA
10ms
LP mode
48ms
ULP mode
128ms
-These measurements where done on the default setup of the IC
(1) It is not advised to use the IQS621 in ULP without capacitive sensing due to the Hall-effect sensor disabled in ULP.
Temperature monitoring alone
Table 10.15 Temperature monitoring current consumption
Conditions
Report rate
10ms
MIN
TYPICAL
MAX
UNIT
Power mode
NP mode
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
VDD = 1.8V
VDD = 3.3V
41.54
41.20
11.98
11.18
N/A (1)
N/A (1)
42.02
41.62
12.25
11.55
N/A (1)
N/A (1)
42.37
41.98
12.68
11.94
N/A (1)
N/A (1)
µA
µA
µA
µA
µA
µA
LP mode
48ms
ULP mode
128ms
-These measurements where done on the default setup of the IC
(1) It is not advised to use the IQS621 in ULP without capacitive sensing due to the temperature sensor disabled in ULP.
Halt mode
Table 10.16 Halt mode current consumption
Conditions
VDD = 1.8V
VDD = 3.3V
TYPICAL UNIT
Power mode
Halt mode
1.6
1.9
µA
µA
Halt mode
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Start-up timing specifications
VDDHI
POR
Internal
reset
I/O
pins
RDY
Full
sensing
mode
Cx0
tinit
tATI
tstabilize
ttest_mode
tcomms1
tcomms2
IQS621 start-up timing diagram
Table 10.17 Timing values for IQS621 start-up timing diagram
Min
Typical
Max
Timing
tinit
6ms
5ms
ttest_mode
tcomms1 (16MHz)
tcomms1 (8MHz)
tATI (16MHz)
tATI (8MHz)
until I2C stop bit
until I2C stop bit
10ms (time-out)
20ms (time-out)
110ms (default settings)
220ms (default settings)
tcomms2
Time-out value defined
in register 0xD8
until I2C stop bit
(event mode enabled
– system event)
(x2 for 8MHz mode)
tstabilize (16MHz)
40ms
80ms
70ms (default settings)
140ms (default settings)
201ms (from POR)
tstabilize (8MHz)
tfull_sensing_mode (16MHz)
tfull_sensing_mode (8MHz)
402ms (from POR)
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ALS specifications
Human eye response Lux calculation
The spectral response of the human eye does not match that of typical silicone based light sensors.
The human eye perceives a peak response in the “green” colour band centred at around 550nm.
However, silicone based sensors has a maximum response to ambient light typically in the infrared
band. To translate the sensor measurement to correlate with the human eye’s natural perceived
ambient light sensitivity a dynamic mathematical function is applied.
The follow parameter values are defined for explanatory purposes:
•
•
•
풂 → 푨푳푺 풎풖풍풕풊풑풍풊풆풓:
o A dynamic multiplier value calculated as in the table below for the specific ALS setup
and current ALS value output.
(
)
풃 → 푨푳푺 풓풂풘 풕풐 푳풖풙 풅풊풗풊풅풆풓:
o 8-bit value loaded from OTP Bank 2 into register 0x82. This calibration value is
determined during IC calibration.
풄 → 푨푳푺 푰푹 풄풐풎풑풆풏풔풂풕풊풐풏 풅풊풗풊풅풆풓:
o For IQS621 a 6-bit value is loaded from OTP Bank 0 (bit 5 & 4) and OTP Bank 3 (bit3
- 0) into register 0x83.
o This calibration value is determined during IC calibration and can be increased to an
8-bit value if calibration requires a higher value.
The IQS621’s ALS multiplier (parameter 풂) is calculated as specified in the following table.
Table 10.18 ALS multiplier calculation
Output
Inputs
Coarse
multiplier
(0x75:
Charge
frequency
divider
CS
size
(0x70:
bit2)
ALS
multi-
plier
풂
ALS
value
(0x16:
bit3-0)
Fine multiplier
(0x75: bit3-0)
bit5-4)
(0x70: bit5-4)
0
1
0
0
0
0
0
0
0
0
1
2
3
MULTIPLIER_CALIBRATION
MULTIPLIER_CALIBRATION
3
2
1
0
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
2
MULTIPLIER_CALIBRATION
4
3
MULTIPLIER_CALIBRATION
8
4
MULTIPLIER_CALIBRATION
16
5
MULTIPLIER_CALIBRATION
32
6
(MULTIPLIER_CALIBRATION+1)*2-1
(MULTIPLIER_CALIBRATION+1)*4-1
(MULTIPLIER_CALIBRATION+1)*4-1
(MULTIPLIER_CALIBRATION+1)*4-1
(MULTIPLIER_CALIBRATION+1)*4-1
64
7
128
384
1152
3456
8
9
10
All the calculations performed on chip are simplified for fixed-point arithmetic. The ALS Lux output is
calculated by the following equation:
풂
2ꢂꢁ
2ꢂꢁ
퐴퐿푆 ≅
ꢃ
−
ꢄ
풃 퐶퐻4 풄. 퐶퐻3
ALS in units of Lux (as perceived by a human eye) is calculated using the measurement of channels
3 (IR-component) & 4 (ALS-component) as well as the three compensation parameters 풂, 풃 & 풄 as
defined above. The output of this function is a 16-bit integer available in the ALS UI output register
(0x17-0x18).
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11 Package information
UOLG-2.8 x 2.5 x 0.6 – 9-pin package and footprint specifications
Table 11.1 UOLG-2.8 x 2.5 x 0.6 – 9-pin
package dimensions (bottom)
Min.
[mm]
Nom.
[mm]
Max.
[mm]
Dimension
A
B
C
D
E
F
2.40
2.70
0.35
0.45
-
2.50
2.80
0.40
0.50
0.43
0.33
0.10
0.10
2.60
2.90
0.45
0.55
-
-
-
G
H
0.05
0.05
0.15
0.15
Table 11.2 UOLG-2.8 x 2.5 x 0.6 – 9-pin
package dimensions (side)
UOLG-2.8 x 2.5 x 0.6-9N
Package dimensions (bottom view).
Min.
[mm]
0.55
Nom.
[mm]
0.60
Max.
[mm]
0.65
Dimension
I
J
2.70
2.80
0.37
0.23
1.56
0.62
0.40
0.145
2.90
K
L
-
-
-
-
-
-
-
-
-
-
-
-
M
N
O
P
UOLG-2.8 x 2.5 x 0.6-9N
Package dimensions (side view)
Table 11.3 UOLG-2.8 x 2.5 x 0.6 – 9-pin
landing pad dimensions
Min.
[mm]
0.45
Nom.
[mm]
0.50
Max.
[mm]
0.55
Dimension
Q
R
S
T
0.35
0.69
0.83
1.20
1.35
0.40
0.74
0.88
1.25
1.40
0.45
0.79
0.93
1.30
1.45
U
V
UOLG-2.8 x 2.5 x 0.6-9N
Landing pad dimensions (top view)
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Device marking and ordering information
Device marking:
No device marking due to clear package.
Pin 1 indication:
UOLG-2.8 x 2.5 x 0.6-9N pin numbers as viewed from top
Ordering Information:
IQS621zppb
z –
Configuration
0: 44H sub-address
1: 45H sub-address
pp – Package type
U9: UOLG-2.8 x 2.5 x 0.6-9N
b – Bulk packaging
R: Reel (3k per reel, MOQ=1 Reel)
Example:
IQS6210U9R
•
•
•
0
U9
R
- configuration is default (44H sub-address)
- UOLG-2.8 x 2.5 x 0.6-9N package
- packaged in reels of 3k (must be ordered in multiples of 3k)
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ProxFusion® Series
Bulk packaging specification
Tape specification
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Reel specification
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ProxFusion® Series
MSL Level
Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions for some
semiconductors. The MSL is an electronic standard for the period in which a moisture sensitive
device can be exposed to ambient room conditions (approximately 30°C / 60% RH see J-STD033C
for more info) before reflow occur.
Level (duration)
Package
MSL 4 (72 hours at ≤ 30°C / 60% RH)
UOLG-2.8 x 2.5 x 0.6-9N
Reflow profile peak temperature < 260°C for < 30 seconds
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12 Datasheet revisions
Revision history
v1.00: – First release version
v1.10: – Datasheet update
− Table 6.1 added for temperature calibration value descriptions.
− Default register values added (hex and binary representation) for all memory map registers.
− Register 0xC2 and 0xC3 ranges corrected (offset of 1; hex value of 0 = 1 used in equations).
v1.11: – Datasheet update
− I2C stop-bit disable functionality explained. Section 8.4 added.
v1.12: – Datasheet update
− Voltage regulation specifications added (10.2).
v1.13: – Datasheet update
− Low power mode description corrected.
− ProxFusion® updated to a registered trademark.
v1.14: – Datasheet update
− Hall-effect sensing operational range confirmed and updated to 10mT – 200mT.
− Section 1.5 ProxFusion® Sensitivity added for ATI algorithm explanation.
− Section 10.4 & 10.5 added: I2C module fall times and slew rates.
− Section 10.6 updated and illustrated in additional Figure 10.1.
− Appendix B. Hall ATI added.
v1.15: – Datasheet update
− Section 10.9 added: Start-up timing specifications.
− Section 10.3 Reset conditions updated.
− Appendix A. Contact information updated.
Errata
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Appendix A. Contact information
USA
Asia
South Africa
Physical
Address
Rm1227, Glittery City
Shennan Rd
Futian District
Shenzhen, 518033
China
109 Main Street
Paarl
7646
6507 Jester Blvd
Bldg 5, suite 510G
Austin
TX 78750
USA
South Africa
Postal
Address
Rm1227, Glittery City
Shennan Rd
Futian District
Shenzhen, 518033
China
PO Box 3534
Paarl
7620
6507 Jester Blvd
Bldg 5, suite 510G
Austin
TX 78750
USA
South Africa
Tel
+1 512 538 1995
+1 512 672 8442
info@azoteq.com
+86 755 8303 5294
ext 808
+27 21 863 0033
+27 21 863 1512
info@azoteq.com
Fax
Email
info@azoteq.com
Please visit www.azoteq.com for a list of distributors and worldwide representation.
The following patents relate to the device or usage of the device: US 6,249,089; US 6,952,084; US 6,984,900; US
8,395,395; US 8,531,120; US 8,659,306; US 9,209,803; US 9,360,510; US 9,496,793; US 9,709,614; US 9,948,297; EP
2,351,220; EP 2,559,164; EP 2,748,927; EP 2,846,465; HK 1,157,080; SA 2001/2151; SA 2006/05363; SA 2014/01541;
SA 2017/02224;
AirButton®, Azoteq®, Crystal Driver, IQ Switch®, ProxSense®, ProxFusion®, LightSense™, SwipeSwitch™,
and the
logo are trademarks of Azoteq.
The information in this Datasheet is believed to be accurate at the time of publication. Azoteq uses reasonable effort to maintain the information up-to-date and accurate, but does
not warrant the accuracy, completeness or reliability of the information contained herein. All content and information are provided on an “as is” basis only, without any representations
or warranties, express or implied, of any kind, including representations about the suitability of these products or information for any purpose. Azoteq disclaims all warranties and
conditions with regard to these products and information, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and
non-infringement of any third party intellectual property rights. Azoteq assumes no liability for any damages or injury arising from any use of the information or the product or caused
by, without limitation, failure of performance, error, omission, interruption, defect, delay in operation or transmission, even if Azoteq has been advised of the possibility of such damages.
The applications mentioned herein are used solely for the purpose of illustration and Azoteq makes no warranty or representation that such applications will be suitable without further
modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Azoteq products are not authorized for use
as critical components in life support devices or systems. No licenses to patents are granted, implicitly, express or implied, by estoppel or otherwise, under any intellectual property
rights. In the event that any of the abovementioned limitations or exclusions does not apply, it is agreed that Azoteq’s total liability for all losses, damages and causes of action (in
contract, tort (including without limitation, negligence) or otherwise) will not exceed the amount already paid by the customer for the products. Azoteq reserves the right to alter its
products, to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and information, its products, programs and services at any
time or to move or discontinue any contents, products, programs or services without prior notification. For the most up-to-date information and binding Terms and Conditions please
refer to www.azoteq.com.
www.azoteq.com/ip
info@azoteq.com
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Appendix B: Hall ATI
Azoteq’s ProxFusion® Hall technology has ATI Functionality; which ensures stable sensor sensitivity.
The ATI functionality is similar to the ATI functionality found in ProxSense® technology. The
difference is that the Hall ATI requires two channels for a single plate.
Using two channels ensures that the ATI can still be used in the presence of the magnet. The two
channels are the inverse of each other, this means that the one channel will sense North and the
other South. The two channels being inverted allows the capability of calculating a reference value
which will always be the same regardless of the presence of a magnet.
Hall reference value:
The equation used to calculate the reference value, per plate:
1
푅푒푓 =
ꢅ
2 ∙ ꢆ푃ꢁ
+
ꢁ′ ꢈ
푃
ꢇ
ꢇ
ATI parameters:
The ATI process adjusts three values (Coarse multiplier, Fine multiplier, Compensation) using two
parameters per plate (ATI base and ATI target). The ATI process is used to ensure that the sensor’s
sensitivity is not severely affected by external influences (Temperature, voltage supply change, etc.).
Coarse and Fine multipliers:
In the ATI process the compensation is set to 0 and the coarse and fine multipliers are adjusted such
that the counts of the reference value (푅푒푓) are roughly the same as the ATI Base value. This means
that if the base value is increased, the coarse and fine multipliers should also increase and vice
versa.
ATI-Compensation:
After the coarse and fine multipliers are adjusted, the compensation is adjusted till the reference
value (푅푒푓) reaches the ATI target. A higher target means more compensation and therefore more
sensitivity on the sensor.
The ATI process ensures that long term temperature changes, or bulk magnetic interference (e.g.
the accidental placement of another magnet too close to the setup), do not affect the sensor’s ability
to detect the intended magnetic change.
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