MLX90333LGO-BCH-100-RE - Melexis

MLX90333 Position Sensor

Datasheet

Features and Benefits

 Absolute 3D Position Sensor

 Simple & Robust Magnetic Design

 Tria⊗is® Hall Technology

 Programmable Linear Transfer Characteristics

(Alpha, Beta)

 Selectable Analog (Ratiometric), PWM, Serial

Protocol

 12 bit Angular Resolution - 10 bit Angular

Thermal Accuracy

 40 bit ID Number

 Single Die – SOIC-8 Package RoHS Compliant

 Dual Die (Full Redundant) – TSSOP-16 Package

RoHS Compliant

SOIC-8

TSSOP-16

Applications

 3D Position Sensor

 Joystick

 4-Way Scroll Key

 Joypad

 Man Machine Interface Device

 Linear Position Sensor

Description

The MLX90333 is a Tria⊗is® Position Sensor able

to sense any magnet moving in its surrounding

through the measurement and the processing of

the 3 spatial components of the magnetic flux

density vector (i.e. BX, BY and BZ).

The horizontal components (BX and BY) are sensed

thanks to an Integrated Magneto-Concentrator

(IMC) while the vertical component (BZ) is sensed

through conventional Hall plate.

The MLX90333 features a contactless position

sensor mode suitable for rotary position sensor

(through-shaft magnet), linear stroke position

sensor (magnet displacement parallel to the

device surface) and for 3D/"Joystick" position

sensor.

The processed position information is ultimately

reported as a ratiometric analog output or as

PWM (Pulse-Width Modulation) signal. In case of

3D/"Joystick" mode, the device features 2

independent outputs. A 3-pin SPI (serial interface)

mode is also available to transfer the position

information to a host-controller.

The output transfer characteristic is fully

programmable (e.g. offset, gain, clamping levels,

linearity, thermal drift, filtering, range...) to match

any specific requirement through end-of-line

calibration. The Melexis programming unit PTC-04

communicates and calibrates the device

exclusively through the connector terminals (VDD-

VSS-OUT).

MUX

ADC

3V3

Reg

Prot.

Output Stage

12 bit Analog

12 bit PWM

SPI

EEPROM

DSP

RAM

µC

ROM - Firmware

VSS

VDD

OUT1

MOSI/MISO

OUT2

SCLK

Switch Out

/SS

VDIG

Triaxis®

MLX90333 Position Sensor

Datasheet

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REVISION 008 – SEPTEMBER 26, 2017

Contents

Features and Benefits ................................................................................................................................... 1

Applications .................................................................................................................................................. 1

Description ................................................................................................................................................... 1

1. Ordering Information ............................................................................................................................... 5

2. Functional Diagram .................................................................................................................................. 6

3. Glossary of Terms ..................................................................................................................................... 7

4. Pinout ....................................................................................................................................................... 8

5. Absolute Maximum Ratings ...................................................................................................................... 9

6. Electrical Specification ............................................................................................................................ 10

7. Isolation Specification ............................................................................................................................. 12

8. Timing Specification................................................................................................................................ 12

9. Accuracy Specification ............................................................................................................................ 13

10. Magnetic Specification ......................................................................................................................... 15

11. CPU & Memory Specification ............................................................................................................... 15

12. End-User Programmable Items ............................................................................................................ 16

13. Description of End-User Programmable Items ..................................................................................... 19

13.1. Output Configuration ................................................................................................................... 19

13.2. Output Mode ............................................................................................................................... 19

13.2.1. Analog Output Mode ............................................................................................................. 19

13.2.2. PWM Output Mode ............................................................................................................... 20

13.2.3. Serial Protocol Output Mode ................................................................................................. 20

13.2.4. Switch Out .............................................................................................................................. 21

13.3. Output Transfer Characteristic .................................................................................................... 21

13.3.1. The Polarity and Modulo Parameters .................................................................................... 22

13.3.2. Alpha/Beta Discontinuity Point (or Zero Degree Point) ........................................................ 23

13.3.3. LNR Parameters ..................................................................................................................... 23

13.3.4. CLAMPING Parameters .......................................................................................................... 24

13.3.5. DEADZONE Parameter ........................................................................................................... 24

13.4. Identification ................................................................................................................................ 25

13.5. Sensor Front-End ......................................................................................................................... 25

13.5.1. HIGHSPEED Parameter........................................................................................................... 26

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13.5.2. GAINMIN and GAINMAX Parameters .................................................................................... 26

13.5.3. FIELDTHRES_LOW and FIELDTHRES_HIGH Parameters ........................................................ 26

13.6. FILTER ........................................................................................................................................... 27

13.6.1. Hysteresis Filter ...................................................................................................................... 27

13.6.2. FIR Filters ................................................................................................................................ 27

13.6.3. IIR Filters ................................................................................................................................. 29

13.7. Programmable Enhanced “Joystick’ Angle Correction ............................................................... 30

13.7.1. Enhanced “Joystick” Angle Formula ...................................................................................... 30

13.8. Programmable Diagnostic Settings .............................................................................................. 30

13.8.1. OUTxDIAG Parameter ............................................................................................................ 31

13.8.2. RESONFAULT Parameter ........................................................................................................ 31

13.8.3. EEHAMHOLE Parameter ........................................................................................................ 31

13.9. Lock .............................................................................................................................................. 31

13.9.1. MLXLOCK Parameter .............................................................................................................. 31

13.9.2. LOCK Parameter ..................................................................................................................... 31

14. Self Diagnostic ...................................................................................................................................... 32

15. Serial Protocol ...................................................................................................................................... 35

15.1. Introduction ................................................................................................................................. 35

15.2. SERIAL PROTOCOL Mode ............................................................................................................. 35

15.3. MOSI (Master Out Slave In) ......................................................................................................... 35

15.4. MISO (Master In Slave Out) ......................................................................................................... 35

15.5. /SS (Slave Select) .......................................................................................................................... 35

15.6. Master Start-Up ........................................................................................................................... 35

15.7. Slave Start-Up .............................................................................................................................. 36

15.8. Timing ........................................................................................................................................... 36

15.9. Slave Reset ................................................................................................................................... 37

15.10. Frame Layer ............................................................................................................................... 37

15.10.1. Frame Type Selection .......................................................................................................... 37

15.10.2. Data Frame Structure .......................................................................................................... 37

15.10.3. Timing ................................................................................................................................... 38

15.10.4. Data Structure ...................................................................................................................... 38

15.10.5. Angle Calculation ................................................................................................................. 39

15.10.6. Error Handling ...................................................................................................................... 39

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16. Recommended Application Diagrams .................................................................................................. 40

16.1. Analog Output Wiring in SOIC-8 Package .................................................................................... 40

16.2. PWM Low Side Output Wiring ..................................................................................................... 40

16.3. Analog Output Wiring in TSSOP-16 Package ............................................................................... 41

16.4. Serial Protocol .............................................................................................................................. 42

17. Standard information regarding manufacturability of Melexis products with different soldering

processes ............................................................................................................................................... 43

18. ESD Precautions .................................................................................................................................... 43

19. Package Information ............................................................................................................................. 44

19.1. SOIC-8 - Package Dimensions ...................................................................................................... 44

19.2. SOIC-8 - Pinout and Marking ....................................................................................................... 44

19.3. SOIC-8 - IMC Positionning ............................................................................................................ 45

19.4. TSSOP-16 - Package Dimensions ................................................................................................. 46

19.5. TSSOP-16 - Pinout and Marking ................................................................................................... 47

19.6. TSSOP-16 - IMC Positionning ....................................................................................................... 47

20. Disclaimer ............................................................................................................................................. 48

21. Contact ................................................................................................................................................. 48

MLX90333 Position Sensor

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REVISION 008 – SEPTEMBER 26, 2017

1. Ordering Information

Product Code Temperature Code Package Code Option Code Packing Form Code

MLX90333 S DC BCH-000 RE

MLX90333 E DC BCH-000 RE

MLX90333 E DC BCH-100 RE

MLX90333 E DC BCT-000 RE

MLX90333 K DC BCH-000 RE

MLX90333 K DC BCH-100 RE

MLX90333 K DC BCT-000 RE

MLX90333 L DC BCH-000 RE

MLX90333 L DC BCH-100 RE

MLX90333 L DC BCT-000 RE

MLX90333 E GO BCH-000 RE

MLX90333 E GO BCH-100 RE

MLX90333 E GO BCT-000 RE

MLX90333 K GO BCH-000 RE

MLX90333 K GO BCH-100 RE

MLX90333 K GO BCT-000 RE

MLX90333 L GO BCH-000 RE

MLX90333 L GO BCH-100 RE

MLX90333 L GO BCT-000 RE

MLX90333 Position Sensor

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REVISION 008 – SEPTEMBER 26, 2017

Legend:

Temperature Code: S: from -20 Deg.C to 85 Deg.C

E: from -40 Deg.C to 85 Deg.C

K: from -40 Deg.C to 125 Deg.C

L: from -40 Deg.C to 150 Deg.C

Package Code: “DC” for SOIC-8 package

“GO” for TSSOP-16 package (dual die)

Option Code: AAA-xxx: die version

xxx-000: Standard

xxx-100: SPI

Packing Form: “RE” for Reel

“TU” for Tube

Ordering Example: MLX90333LGO-BCH-000-RE

Table 1 - Legend

2. Functional Diagram

Figure 1 – Block Diagram

MUX

ADC

3V3

Reg

Prot.

Output Stage

12 bit Analog

12 bit PWM

SPI

EEPROM

DSP

RAM

µC

ROM - Firmware

OUT1

MOSI/MISO

OUT2

SCLK

Switch Out

/SS

DIG

Triaxis

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REVISION 008 – SEPTEMBER 26, 2017

3. Glossary of Terms

Gauss (G), Tesla (T)

Units for the magnetic flux density - 1 mT = 10 G

Temperature Coefficient (in ppm/Deg.C.)

NC Not Connected

PWM

ulse

idth

odulation

%DC Duty Cycle of the output signal i.e. TON /(TON + TOFF)

ADC

Analog-to-Digital Converter

DAC Digital-to-Analog Converter

LSB

Least Significant Bit

MSB

Most Significant Bit

DNL Differential Non-Linearity

INL

Integral Non-Linearity

RISC Reduced Instruction Set Computer

ASP

Analog Signal Processing

DSP

igital

ignal

rocessing

ATAN Trigonometric function: arctangent (or inverse tangent)

IMC

Integrated Magneto-Concentrator (IMC®)

CoRDiC Coordinate Rotation Digital Computer (i.e. iterative rectangular-to-polar transform)

EMC

Electro-Magnetic Compatibility

Table 2 – Glossary of Terms

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4. Pinout

SOIC-8 TSSOP-16

Analog / PWM Serial Protocol Analog / PWM Serial Protocol

1 VDD VDD VDIG1 VDIG1

2 Test 0 Test 0 VSS1 (Ground1) VSS1 (Ground1)

3 Not Used /SS VDD1 VDD1

4 OUT2 SCLK Test 01 Test 01

5 OUT1 MOSI / MISO Not Used /SS2

6 Test 1 Test 1 OUT22 SCLK2

7 VDIG VDIG OUT12 MOSI2 / MISO2

8 VSS (Ground) VSS (Ground) Test 12 Test 12

VDIG2 VDIG2

10 VSS2 (Ground2) VSS2 (Ground2)

11 VDD2 VDD2

12 Test 02 Test 02

13 Not Used /SS1

14 OUT21 SCLK1

15 OUT11 MOSI1 / MISO1

16 Test 11 Test 11

For optimal EMC behavior, it is recommended to connect the unused pins (Not Used and Test) to the Ground

(see section 16).

1 See Section 13.1 for OUT1 and OUT2 configuration

(1)

MLX90333 Position Sensor

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REVISION 008 – SEPTEMBER 26, 2017

5. Absolute Maximum Ratings

Parameter Value

Supply Voltage, VDD (overvoltage) + 20 V

Reverse Voltage Protection - 10 V

Positive Output Voltage (Analog or PWM)

Both Outputs OUT1 and OUT2

+ 10 V

+ 14 V (200 s max – TA = + 25 Deg.C)

Output Current (IOUT) ± 30 mA

Reverse Output Voltage

Both Outputs OUT1 and OUT2 - 0.3 V

Reverse Output Current

Both Outputs OUT1 and OUT2 - 50 mA

Operating Ambient Temperature Range, TA - 40 Deg.C … + 150 Deg.C

Storage Temperature Range, TS - 40 Deg.C … + 150 Deg.C

Magnetic Flux Density ± 4 T

Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum-

rated conditions for extended periods may affect device reliability.

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REVISION 008 – SEPTEMBER 26, 2017

6. Electrical Specification

DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the

Temperature suffix (S, E, K or L).

Parameter Symbol Test Conditions Min Typ Max Units

Nominal Supply Voltage VDD 4.5 5 5.5 V

Supply Current (2) IDD Slow mode (3)

Fast mode (3) 8.5

13.5

POR Level VDD POR Supply Under Voltage 2 2.7 3 V

Output Current

Both Outputs OUT1 and OUT2 IOUT Analog Output mode

PWM Output mode

-8

-20 8

Output Short Circuit Current

Both Outputs OUT1 and OUT2 Ishort

VOUT = 0 V

VOUT = 5 V

VOUT = 14 V (TA = 25 Deg.C)

Output Load

Both Outputs OUT1 and OUT2 RL Pull-down to Ground

Pull-up to 5V (4)

∞ (5)

kΩ

Analog Saturation Output

Level

Both Outputs OUT1 and OUT2

Vsat_lo Pull-up load RL ≥ 10 kΩ 3 %VDD

Vsat_hi Pull-down load RL ≥ 5 kΩ 96 %VDD

Digital Saturation Output Level

Both Outputs OUT1 and OUT2

VsatD_lo Pull-up Low Side RL ≥ 10 kΩ

Push-Pull (IOUT = -20mA) 1.5 %VDD

VsatD_hi Push-Pull (IOUT = 20mA) 97 %VDD

Active Diagnostic Output Level

Both Outputs OUT1 and OUT2

Diag_lo Pull-down load RL ≥ 5 kΩ

Pull-up load RL ≥ 10 kΩ 1

1.5

%VDD

Diag_hi Pull-down load RL ≥ 5 kΩ

Pull-up load RL ≥ 5 kΩ

98 %VDD

%VDD

Passive Diagnostic Output

Level BVSSPD Broken VSS &

Pull-down load RL ≤ 10 kΩ 4(6) %VDD

2 Supply current per silicon die. Dual die version will consume twice the current

3 See section 13.5.1 for details concerning Slow and Fast mode

4 Applicable for output in Analog and PWM (Open-Drain) mode

5 RL <

∞

for output in PWM mode

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REVISION 008 – SEPTEMBER 26, 2017

Parameter Symbol Test Conditions Min Typ Max Units

Both Outputs O

1 and O

(Broken Track Diagnostic) (6) BVSSPU Broken VSS &

Pull-up load RL ≥ 1 kΩ 99 100 %VDD

BVDDPD Broken VDD &

Pull-down load RL ≥ 1 kΩ 0 1 %VDD

BVDDPU Broken VDD &

Pull-up load to 5 V

No Broken Track

diagnostic %VDD

Clamped Output Level (7)

Both Outputs OUT1 and OUT2

Clamp_lo Programmable 0 100 %VDD

Clamp_hi Programmable 0 100 %VDD

As an illustration of the previous table, the MLX90333 fits the typical classification of the output span

described on the Figure 2.

Figure 2 – Output Span Classification

6 For detailed information, see also section 14

7 Clamping levels need to be considered vs the saturation of the output stage (see Vsat_lo and Vsat_hi)

Diagnostic Band (High)

Linear Range

Diagnostic Band (Low)

Clamping High

Clamping Low

0 %

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

96 %

4 %

Output Level

92 %

88 %

12 %

8 %

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REVISION 008 – SEPTEMBER 26, 2017

7. Isolation Specification

DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the

Temperature suffix (S, E, K or L). Only valid for the package code GO i.e. dual die version.

Parameter Symbol Test Conditions Min Typ Max Units

Isolation Resistance Between dice 4 MΩ

8. Timing Specification

DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the

Temperature suffix (S, E, K or L).

Parameter Symbol Test Conditions Min Typ Max Units

Main Clock Frequency Ck Slow mode (8)

Fast mode (8) 7

20 MHz

MHz

Sampling Rate Slow mode (8)

Fast mode (8) 600

200

1000

330

μs

Step Response Time Ts Slow mode (8), Filter = 5 (9)

Fast mode (8), Filter = 0 (9)

400

600

μs

Watchdog Wd See section 14 5 ms

Start-up Cycle Tsu Slow and Fast mode (8) 15 ms

Analog Output Slew Rate COUT = 42 nF

COUT = 100 nF 200

100 V/ms

V/ms

PWM Frequency FPWM PWM Output Enabled 100 1000 Hz

Digital Output Rise Time

Both Outputs OUT1 and OUT2 Mode 5 – 10 nF, RL = 10 kΩ

Mode 7 – 10 nF, RL = 10 kΩ 120

2.2 μs

μs

Digital Output Fall Time

Both Outputs OUT1 and OUT2 Mode 5 – 10 nF, RL = 10 kΩ

Mode 7 – 10 nF, RL = 10 kΩ 1.8

1.9 μs

μs

8 See section 13.5.1 for details concerning Slow and Fast mode

9 See section 13.6 for details concerning Filter parameter

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REVISION 008 – SEPTEMBER 26, 2017

Parameter Symbol Test Conditions Min Typ Max Units

Maximum Field amplitude

Change (10) (%) vs. Field

Frequency (Hz)

AGC 90% (11)

Slow mode (8)

Field Freq > 40Hz

Field Freq = 20Hz

Fast mode (8)

Field Freq > 150Hz

Field Freq = 50Hz

AGC 64% (MLX90333BCT only)

Slow mode (8)

Field Freq > 80Hz

Field Freq = 50Hz

Fast mode (8)

Field Freq > 250Hz

Field Freq = 50Hz

-10

-30

-12

-30

-22

-30

-60

9. Accuracy Specification

DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the

Temperature suffix (S, E, K or L).

Parameter Symbol Test Conditions Min Typ Max Units

ADC Resolution on the raw

signals X, Y and Z RADC Slow Mode (12)

Fast Mode (12) 15

14 bits

bits

Offset on the Raw Signals

X, Y and Z X0, Y0, Z0 TA = 25 Deg.C -60 60 LSB15

Mismatch on the Raw Signals

X, Y and Z

SMISMXY

SMISMXZ

SMISMYZ

TA = 25 Deg.C

Between X and Y

Between X and Z (13)

Between Y and Z (13)

-1

-30

10 Ex.: Magnetic field amplitude change in case of vibration

11 Automatic Gain Control – see Section 13.5.2 for more information

12 15 bits corresponds to 14 bits + sign and 14 bits corresponds to 13 bits + sign. After angular calculation, this corresponds to

0.005Deg./LSB15 in Low Speed Mode and 0.01Deg./LSB14 in High Speed.

13 The mismatch between X and Z (Y and Z) can be reduced through the calibration of the 2 parameters kZ and kt as described in the

formulas page 32 in order to take into account the IC mismatch and system tolerances (magnetic and mechanical).

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REVISION 008 – SEPTEMBER 26, 2017

Parameter Symbol Test Conditions Min Typ Max Units

Magnetic Angle Phase Error

ORTHXY

ORTHXZ

ORTHYZ

TA = 25 Deg.C

Between X and Y

Between X and Z

Between Y and Z

-0.3

-10

0.3

Deg.

Thermal Offset Drift #1 on the

Raw Signals X, Y and Z (14)

Thermal Offset Drift at the DSP

input

(excl. DAC and output stage)

Temperature suffix S, E and K

Temperature suffix L

-60

-90

LSB15

Thermal Offset Drift #2

(to be considered only for the

analog output mode)

Thermal Offset Drift of the

DAC and Output Stage

Temperature suffix S, E and K

Temperature suffix L

-0.3

-0.4

0.3

0.4

%VDD

Thermal Drift of Sensitivity

Mismatch (15)

ΔSMISMXY Temperature suffix S, E and K

Temperature suffix L

-0.3

-0.5 0.3

0.5

ΔSMISMXZ

ΔSMISMYZ

Temperature suffix S, E and K

Temperature suffix L

-1

-1.5 1

1.5

Analog Output Resolution RDAC

12 bits DAC

(Theoretical – Noise free)

INL

DNL

-4

-1

0.025

%VDD

/LSB

LSB

Output stage Noise Clamped Output 0.05 %VDD

Noise pk-pk (16) Gain = 14, Slow mode, Filter = 5

Gain = 14, Fast mode, Filter = 0 5

LSB15

Ratiometry Error -0.1 0 0.1 %VDD

PWM Output Resolution RPWM 12 bits

(Theoretical – Jitter free) 0.025 %DC/

LSB

14 For instance, Thermal Offset Drift #1 equal ± 60LSB15 yields to max. ± 0.3 Deg. angular error for the computed angular information

(output of the DSP). See Front End Application Note for more details. This is only valid if automatic gain is set (See section 13.5.2)

15 For instance, Thermal Drift of Sensitivity Mismatch equal ± 0.4% yields to max. ± 0.1 Deg. angular error for the computed angular

information (output of the DSP). See Front End Application Note for more details.

16 The application diagram used is described in the recommended wiring. For detailed information, refer to section Filter in

application mode (Section 13.6).

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REVISION 008 – SEPTEMBER 26, 2017

Parameter Symbol Test Conditions Min Typ Max Units

PWM Jitter (17) JPWM Gain = 11,

FPWM = 250 Hz – 800Hz 5 LSB12

Serial Protocol Output

Resolution RSP Theoretical – Jitter free 16 bits

10. Magnetic Specification

DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the

Temperature suffix (S, E, K or L).

Parameter Symbol Test Conditions Min Typ Max Units

Magnetic Flux Density BX, BY (18) 20 50 70 (19) mT

Magnetic Flux Density BZ (18) 24 140 mT

IMC Gain in X and Y (20) GainIMCXY 1.2 1.4 1.8

IMC Gain in Z (20) GainIMCZ 1.1 1.3

k factor k GainIMCXY / GainIMCZ 1 1.2 1.5

Magnet Temperature

Coefficient TCm -2400 0 ppm/

Deg.C

11. CPU & Memory Specification

The DSP is based on a 16 bit RISC µController. This CPU provides 5 MIPS while running at 20 MHz.

Parameter Symbol Test Conditions Min Typ Max Units

ROM 10 KB

RAM 256 B

EEPROM 128 B

17 Jitter is defined by ± 3 σ for 1000 successive acquisitions and the slope of the transfer curve is 100%DC/360 Deg.

18 The condition must be fulfilled for at least one field BX, BY or BZ

19 Above 70 mT, the IMC starts saturating yielding to an increase of the linearity error.

20 This is the magnetic gain linked to the Integrated Magneto Concentrator structure. This is the overall variation. Within one lot,

the part to part variation is typically ± 10% versus the average value of the IMC gain of that lot.

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REVISION 008 – SEPTEMBER 26, 2017

12. End-User Programmable Items

Parameter Comments

Default Values

BCH

STD/IP1 BCH SPI BCT

STD/IP1 # bit

MAINMODE Select Outputs Configuration 0 0 0 2

Outputs Mode Output stages mode 2 N/A 2 3

PWMPOL1 PWM Polarity (OUT1) 0 N/A 0 1

PWMPOL2 PWM Polarity (OUT2) 0 N/A 0 1

PWM_Freq PWM Frequency 1000h N/A 1000h 16

3-Points 4 segments transfer curve for single angle

output 0 0 0 1

ALPHA_POL Revert the Sign of Alpha 0 0 0 1

ALPHA_MOD180 Modulo Operation (180 Deg) on Alpha 1 1 1 1

ALPHA_DP Alpha Discontinuity Point 0 0 0 8

ALPHA_DEADZONE Alpha Dead Zone 0 0 0 6

ALPHA_S0 Alpha Initial Slope 4000h 4000h 4000h 16

ALPHA_X Alpha X Coordinate 4000h 4000h 4000h 16

ALPHA_Y Alpha Y Coordinate 8000h 8000h 8000h 16

ALPHA_S1 Alpha S1 Slope 4000h 4000h 4000h 16

BETA_POL Revert the Sign of Beta 0 0 0 1

BETA_MOD180 Modulo Operation (180 Deg) on Beta 1 1 1 1

BETA_DP Beta Discontinuity Point 0 0 0 6

BETA_DEADZONE Beta Dead Zone 0 0 0 8

BETA_S0 Beta Initial Slope 4000h 4000h 4000h 16

BETA_X Beta X Coordinate 4000h 4000h 4000h 16

BETA_Y Beta Y Coordinate 8000h 8000h 8000h 16

BETA_S1 Beta S1 Slope 4000h 4000h 4000h 16

CLAMP_LOW Clamping Low 0% 0% 0% 16

CLAMP_HIGH Clamping High 100% 100% 100% 16

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REVISION 008 – SEPTEMBER 26, 2017

Parameter Comments

Default Values

BCH

STD/IP1 BCH SPI BCT

STD/IP1 # bit

2D 0 0 0 1

XYZ SPI Only 0 0 0 1

KZ B3h B3h 8

KT (21) 80h 80h N/A 8

FIELDTHRES_LOW 0h 0h 0h 8

FIELDTHRES_HIGH 0h 0h 0h 8

DERIVGAIN 40h 40h 40h 8

FILTER 3 0 3 8

FILTER A1 Filter coefficient A1 for FILTER=6 6600h 6600h 6600h 16

FILTER A2 Filter coefficient A2 for FILTER=6 2A00h 2A00h 2A00h 16

FILTERFIRST 0 0 0 1

FHYST 0 0 0 8

MLXID1 / MLXID2 /

MLXID322 MLX MLX MLX 16

CUSTID1 1 1 1 16

CUSTID2 17d (23) 37d 38d 16

CUSTD3 MLX MLX MLX 16

HIGHSPEED 0 0 0 1

GAINMIN 0 0 0 8

GAINMAX 41d 41d 41d 8

EEHAMHOLE 3131h 0h 3131h 16

RESONFAULT Diagnostic mode 1h N/A 0h 2

MLXLOCK 0h 0h 0h 1

21 Only applicable for MLX90333BCH

22 MLXIDs parameters contain unique ID programmed by Melexis to guarantee full part traceability

23 CUSTID2 might also be 29d for MLX90333SDC–BCH–000

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REVISION 008 – SEPTEMBER 26, 2017

Parameter Comments

Default Values

BCH

STD/IP1 BCH SPI BCT

STD/IP1 # bit

LOCK 0h 1h 0h 1

Parameters for MLX90333xxx-BCT only

AGCRADIUSTARGET (24) Define Gain target 64% / 90% ADC N/A N/A 0 1

SWTHRES Angle Trigger level for switch on OUT2 N/A N/A FFFFh 16

SWLOW Switch Low level output on OUT2 N/A N/A 40h 8

SWHIGH Switch High level output on OUT2 N/A N/A FFh 8

SWHYST Switch hysteresis N/A N/A 0 8

CodePWMLATCH Enable synchronized % DC update N/A N/A 1 1

OUT1DIAG Active Diagnostic Output 1 behavior N/A N/A 0 1

OUT2DIAG Active Diagnostic Output 2 behavior N/A N/A 0 1

CodeKTALPHA “Joystick” ALPHA angle correction

parameter N/A N/A 80h 8

CodeKTBETA “Joystick” BETA angle correction

parameter N/A N/A 80h 8

CodeORTHZXALPHA Front-end “Joystick” angle correction

parameter N/A N/A 0 8

CodeORTHZYALPHA Front-end “Joystick” angle correction

parameter N/A N/A 0 8

CodeORTHZXBETA Front-end “Joystick” angle correction

parameter N/A N/A 0 8

CodeORTHZYBETA Front-end “Joystick” angle correction

parameter N/A N/A 0 8

CodeENHORTH Enable enhanced Front-end “Joystick”

angle correction N/A N/A 0 1

24 Option to use the same ADC target as MLX90333BCH. Default value equals lowered % ADC target

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13. Description of End-User Programmable Items

13.1.

Output Configuration

The parameter MAINMODE defines the output stages configuration

MAINMODE OUT1 OUT2

0 ALPHA BETA

1 BETA ALPHA

2 ALPHA ALPHA DERIVATE / SWITCH (25)

3 BETA BETA DERIVATE / SWITCH (25)

13.2.

Output Mode

The MLX90333 output type is defined by the Output Mode parameter.

Parameter Value Description

Analog Output Mode 2 Analog Rail-to-Rail

PWM Output Mode 5

Low Side (NMOS)

Push-Pull

Serial Protocol Output Mode N/A Low Side (NMOS)

13.2.1.

Analog Output Mode

The Analog Output Mode is a rail-to-rail and ratiometric output with a push-pull output stage configuration

allows the use of a pull-up or pull-down resistor.

25 Derivate = MLX90333BCH, Switch = MLX90333BCT

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13.2.2.

PWM Output Mode

If one of the PWM Output mode is selected, the output signal is a digital signal with Pulse Width Modulation

(PWM).

In mode 5, the output stage is an open drain NMOS transistor (low side), to be used with a pull-up resistor to

VDD.

In mode 7, the output stage is a push-pull stage for which Melexis recommends the use of a pull-up resistor

to VDD.

The PWM polarity of the OUT1 (OUT2) is selected by the PWMPOL1 (PWMPOL2) parameter:

 PWMPOL1 (PWMPOL2) = 0 for a low level at 100%

 PWMPOL1 (PWMPOL2) = 1 for a high level at 100%

The PWM frequency is selected by the PWM_Freq parameter.

Oscillator Mode

Pulse-Width Modulation Frequency (Hz)

100 200 500 1000

Low Speed ~35000 ~17500 ~7000 ~3500

High Speed - ~50000 ~20000 ~10000

Table 3 – PWM Frequency Code (based on typical main clock frequency)

For instance, in Low Speed Mode, set PWM_Freq=7000 (decimal) to set the PWM frequency around

500Hz (26).

13.2.3.

Serial Protocol Output Mode

The MLX90333 features a digital Serial Protocol mode. The MLX90333 is configured as a Slave node. The

frame layer type is defined by the parameter XYZ as described in the next table.

Parameter Value Description

XYZ 0

Regular SPI Frame Alpha, Beta

X, Y, Z Frame

See the dedicated Serial Protocol section for a full description (Section 15).

26 In order to compensate the lot to lot variation of the main clock frequency (Ck), Melexis strongly recommends trimming the PWM

frequency during EOL programming (see the PTC-04 documentation).

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REVISION 008 – SEPTEMBER 26, 2017

13.2.4.

Switch Out

Parameter Value Unit

SWTHRES 0 … 100 %

SWHYST 0 … 0.39 %

SWLOW 0 … 100 %

SWHIGH 0 … 100 %

The output level on OUT2 is changed from SWLOW to SWHIGH when the output value is greater than the

value stored in the SWTHRES parameter.

The SWHYST defines the hysteresis amplitude around the Switch point. The switch is actually activated if the

digital output value is greater than SWTHRES+SWHYST. It is deactivated if the digital output value is less

than SWTHRES-SWHYST.

If the Switch feature is not used in the application, the output pin needs to be connected to the ground and

disabled in EEPROM.

13.3.

Output Transfer Characteristic

Parameter Value Description

3-Points 0

Regular Alpha, Beta Output (2 times 2 segments)

Alpha (or Beta) Single Output (1 time 4 segments)

The 3-Points parameters allow the user to use the 3-points mapping (4 segments). This mode can only be

used for Mainmode equals 2 and 3.

 3-Points = 0, the parameters list is described as bellow (Angle Alpha and Beta):

Parameter Value Unit

ALPHA_POL

BETA_POL 0, 1

ALPHA_MOD180

BETA_MOD180 0, 1

ALPHA_DP

BETA_DP 0 … 359.9999 Deg

ALPHA_X

BETA_X 0 … 359.9999 Deg

ALPHA_Y

BETA_Y 0 … 100 %

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REVISION 008 – SEPTEMBER 26, 2017

Parameter Value Unit

ALPHA_S0

ALPHA_S1

BETA_S0

BETA_S1

0 … 17 %/Deg

CLAMP_LOW 0 … 100 %

CLAMP_HIGH 0 … 100 %

ALPHA_DEADZONE

BETA_DEADZONE 0 … 359.9999 Deg

 3-Points = 1, the parameters list is described as bellow (Angle Alpha or Beta):

Parameter Value Unit

ALPHA_POL 0  CCW

1  CW

DP 0 … 359.9999 Deg

LNR_A_X

LNR_B_X

LNR_C_X

0 … 359.9999 Deg

LNR_A_Y

LNR_B_Y

LNR_C_Y

0 … 100 %

LNR_S0

LNR_A_S

LNR_B_S

0 … 17 %/Deg

LNR_C_S -17 … 0 … 17 %/Deg

CLAMP_LOW 0 … 100 %

CLAMP_HIGH 0 … 100 %

DEADZONE 0 … 359.9999 Deg

13.3.1.

The Polarity and Modulo Parameters

The angle Alpha is defined as the arctangent of Z/X and Beta as the arctangent of Z/Y. It is possible to invert

the polarity of these angles via the parameters ALPHA_POL and BETA_POL set to “1”.

The MLX90333 can also be insensitive to the field polarity by setting the ALPHA_MOD180/BETA_MOD180

to “1”.

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13.3.2.

Alpha/Beta Discontinuity Point (or Zero Degree Point)

The Discontinuity Point (DP) defines the zero point of the circle (Alpha or Beta). The discontinuity point

places the origin at any location of the trigonometric circle (see Figure 5).

For a Joystick Application, Melexis recommends to set the DP to zero.

13.3.3.

LNR Parameters

The LNR parameters, together with the clamping values, fully define the relation (the transfer function)

between the digital angles (Alpha and Beta) and the output signals.

The shape of the MLX90333 transfer function from the digital angle values to the output voltages is

described by the drawing below (see Figure 3 ). Four segments can be programmed but the clamping levels

are necessarily flat (3-Points = 0).

Figure 3 – Digital Angle (Alpha) Transfer Characteristic (Idem ditto for Beta)

360 (Deg.)

ALPHA_X

Clamping Low

CLAMPLOW

ALPHA_Y

CLAMPHIGH

100%

ALPHA_S0

Clamping High

0 (Deg.)

ALPHA_S1

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REVISION 008 – SEPTEMBER 26, 2017

In the case of one single angle output (3-Points = 1), the shape of the MLX90333 transfer function from the

digital angle values to the output voltage is described by the drawing below (See Figure 4). Six segments can

be programmed but the clamping levels are necessarily flat.

Figure 4 – Digital Angle (Alpha) Transfer Characteristic for Single Angle Output

13.3.4.

CLAMPING Parameters

The clamping levels are two independent values to limit the output voltage range in normal operation. The

CLAMP_LOW parameter sets the minimum output voltage level while the CLAMP_HIGH parameter sets the

maximum output voltage level. Both parameters have 16 bits of adjustment. In analog mode the resolution

will be limited by the D/A converter (12 bits) to 0.024%VDD. In PWM mode the resolution will be 0.024%DC.

In SPI mode the resolution is 14 bits or 0.022 Deg. over 360 Deg.

13.3.5.

DEADZONE Parameter

The dead zone is defined as the angle window between 0 and 359.9999 Deg. (See Figure 5).

When the digital angle (Alpha or Beta) lies in this zone, the IC is in fault mode (RESONFAULT must be set

to “1” – See 13.8.2).

In case of ALPHA_MOD180 (or BETA_MOD180) is not set, the angle between 180 Deg. and 360 Deg. will

generate a “deadzone” fault, unless DEADZONE = 0.

360 (Deg.)

LNR_A_X LNR_B_X LNR_C_X

Clamping Low

CLAMPLOW

LNR_A_Y

LNR_B_Y

LNR_C_Y

CLAMPHIGH

100%

Slope

LNR_S0

Slope

LNR_A_S

Slope

LNR_B_S

Slope

LNR_C_S

Clamping High

0 (Deg.)

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REVISION 008 – SEPTEMBER 26, 2017

Figure 5 – Discontinuity Point and Dead Zone (Alpha - Idem ditto for Beta)

13.4.

Identification

Parameter Value Unit

MLXID1

MLXID2

MLXID3

0 … 65535

CUSTID1

CUSTID2

CUSTID3

0 … 65535

Identification number: 48 bits freely useable by Customer for traceability purpose.

13.5.

Sensor Front-End

Parameter Value Unit

HIGHSPEED Slow mode = 0

Fast mode = 1

GAINMIN 0 … 41

GAINMAX 0 … 41

FIELDTHRES_LOW 0 … 100 %

FIELDTHRES_HIGH 0 … 100 %

0 Deg.

90 Deg.

180 Deg.

Programmable

Forbidden Zone

Programmable

0 Deg. Point

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Page 26 of 48

REVISION 008 – SEPTEMBER 26, 2017

13.5.1.

HIGHSPEED Parameter

The HIGHSPEED parameter defines the main frequency for the DSP:

 HIGHSPEED = 0 selects the Slow mode with a 7 MHz master clock.

 HIGHSPEED = 1 selects the Fast mode with a 20 MHz master clock.

For better noise performance, the Slow Mode must be enabled.

13.5.2.

GAINMIN and GAINMAX Parameters

The MLX90333 features an automatic gain control (AGC) of the analog chain. The AGC loop is based on

Max(|VX|, |VY|, |VZ|) = |Amplitude| = Radius

and it targets an amplitude of 90% of the ADC input span.

In MLX90333BCT, this default target is changed to 64% but can be set to 90% by enabling the parameter

AGCRADIUSTARGET.

The current gain can be read out with the programming unit PTC-04 and gives a rough indication of the

applied magnetic flux density (Amplitude).

GAINMIN & GAINMAX define the boundaries within the gain setting is allowed to vary. Outside this range,

the outputs are set in diagnostic low.

13.5.3.

FIELDTHRES_LOW and FIELDTHRES_HIGH Parameters

The strength of the applied field is constantly calculated in a background process. The value of this field can

be read out with the PTC-04 and gives a rough indication of the applied magnetic flux density (Amplitude).

FIELDTHRES_LOW & FIELDTHRES_HIGH define the boundaries within the actual field strength (Radius) is

allowed to vary. Outside this range, the outputs are set in diagnostic low.

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REVISION 008 – SEPTEMBER 26, 2017

13.6.

FILTER

Parameter Value Unit

FHYST 0 … 11; step 0.04 Deg.

FILTER 0 … 6

FILTERFIRST 0, 1

The MLX90333 includes 3 types of filters:

 Hysteresis Filter: programmable by the FHYST parameter

 Low Pass FIR Filters controlled with the Filter parameter

 Low Pass IIR Filter controlled with the Filter parameter and the coefficients FILTER A1 and FILTER A2

Note: if the parameter FILTERFIRST is set to “1”, the filtering is active on the digital angle. If set to “0”, the

filtering is active on the output transfer function.

13.6.1.

Hysteresis Filter

The FHYST parameter is a hysteresis filter. The output value of the IC is not updated when the digital step is

smaller than the programmed FHYST parameter value. The output value is modified when the increment is

bigger than the hysteresis. The hysteresis filter reduces therefore the resolution to a level compatible with

the internal noise of the IC. The hysteresis must be programmed to a value close to the noise level.

13.6.2.

FIR Filters

The MLX90333 features 6 FIR filter modes controlled with Filter = 0 … 5. The transfer function is described

below:

y−

∑

The characteristics of the filters no 0 to 5 is given in the Table 4.

Filter No (j) 0 1 2 3 4 5

Type Disable Finite Impulse Response

Coefficients a0… a5 N/A 110000 121000 133100 111100 122210

Title No Filter Extra Light Light

90% Response Time 1 2 3 4 4 5

99% Response Time 1 2 3 4 4 5

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REVISION 008 – SEPTEMBER 26, 2017

Filter No (j) 0 1 2 3 4 5

Efficiency RMS (dB) 0 2.9 4 4.7 5.6 6.2

Efficiency P2P (dB) 0 2.9 3.6 5.0 6.1 7.0

Table 4 – FIR Filters Selection Table

Figure 6 – Step Response and Noise Response for FIR (No 3) and FHYST = 10

30000

32000

34000

36000

38000

40000

0 5 10 15 20 25 30

[0..65535] Scale

Milliseconds

FIR and HYST Filters: Step Response Comparative Plot

x(n)

fir(n)

hyst(n)

39800

39850

39900

39950

40000

40050

40100

40150

40200

020 40 60 80 100 120 140

[0..65535] Scale

Milliseconds

FIR and HYST Filter : Gaussian white noise response

x(n)

fir(n)

hyst(n)

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REVISION 008 – SEPTEMBER 26, 2017

13.6.3.

IIR Filters

The IIR Filter is enabled with Filter = 6. The diagram of the IIR Filter implemented in the MLX90333 is given in

Figure 7. Only the parameters A1 and A2 are configurable (See Table 5).

Figure 7 - IIR Diagram

Filter No 6

Type 2nd Order Infinite Impulse Response (IIR)

Title Medium & Strong

90% Response Time 11 16 26 40 52 100

Efficiency RMS (dB) 9.9 11.4 13.6 15.3 16.2 > 20

Efficiency P2P (dB) 12.9 14.6 17.1 18.8 20.0 > 20

Coefficient A1 26112 28160 29120 30208 31296 31784

Coefficient A2 10752 12288 12992 13952 14976 15412

Table 5 – IIR Filter Selection Table

The Figure 8 shows the response of the filter to a Gaussian noise with default coefficient A1 and A2.

Figure 8 – Noise Response for the IIR Filter

-1

x(n)

-1

y(n)

= 1

= 2

= 1

-a

39800

39850

39900

39950

40000

40050

40100

40150

40200

050 100 150

IIR Filter -Gaussian White Noise Response

x(n)

y(n)

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REVISION 008 – SEPTEMBER 26, 2017

13.7.

Programmable Enhanced “Joystick’ Angle Correction 27

Parameter Value Unit

KTALPHA

KTBETA [0 … 200] / 128 LSB

ORTHZXALPHA

ORTHZYALPHA

ORTHZXBETA

ORTHZYBETA

[-128 … 127] / 256 LSB

ENHORTH Disable = 0

Enable = 1

13.7.1.

Enhanced “Joystick” Angle Formula













−

−+

=VzORTHzxV

VORTHzyVkVk

ATAN

zYtZZ

))*(()(













−

−+

ztZZ

VORTHzyV

VORTHzxVxkVk

ATAN *

))*(()(

The enhanced “joystick” angle function is enabled by parameter ENORTH. Parameters are automatically

calculated when using the MLX90333BCT/ 9 points solver to optimize the shape of Betaout vs Alphaout in

accordance to the mechanical boundaries of the Joystick.

13.8.

Programmable Diagnostic Settings

Parameter Value Unit

OUT1DIAG

OUT2DIAG

DIAGLOW = 0

DIAGHIGH = 1

RESONFAULT Disable = 0

Enable = 1

EEHAMHOLE Enable = 0

Disable = 3131h

27 Only Applicable for MLX90333BCT

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REVISION 008 – SEPTEMBER 26, 2017

13.8.1.

OUTxDIAG Parameter

This OUT1DIAG, OUT2DIAG parameters define the behavior of the output in case of a diagnostic situation.

13.8.2.

RESONFAULT Parameter

The RESONFAULT parameter enables the soft reset when a fault is detected by the CPU when the parameter

is set to “1”. It is recommended to set it to “1” to activate the self diagnostic modes (See section 14).

Note that in the User Interface (MLX90333UI), the RESONFAULT is a cluster of the following two bits, i.e. the

2 bits are both disabled or both enabled:

 DRESONFAULT: disable the reset in case of a fault.

 DOUTINFAULT: disable output in diagnostic low in case of fault.

It is recommended to set both EEPROM parameters to “0” to activate the self diagnostic modes.

13.8.3.

EEHAMHOLE Parameter

The EEHAMHOLE parameter disables the CRC check and the memory recovery (Hamming code) when it is

equal to 3131h. Melexis strongly recommends setting the parameter to “0” (enable memory recovery). The

parameter is set automatically to “0” by the solver function “MemLock”.

13.9.

Lock

Parameter Value Unit

MLXLOCK 0, 1

LOCK 0, 1

13.9.1.

MLXLOCK Parameter

MLXLOCK locks all the parameters set by Melexis.

13.9.2.

LOCK Parameter

LOCK locks all the parameters set by the user. Once the lock is enabled, it is not possible to change the

EEPROM values. However it is still possible to read back the memory contents with the PTC-04 programmer.

Note that the lock bit should be set by the solver function “MemLock”.

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REVISION 008 – SEPTEMBER 26, 2017

14. Self Diagnostic

The MLX90333 provides numerous self-diagnostic features. Those features increase the robustness of the IC

functionality as it will prevent the IC to provide erroneous output signal in case of internal or external failure

modes (“fail-safe”).

Fault Mode Action Effect on Outputs Remark

ROM CRC Error at start up

(64 words including

Intelligent Watch Dog - IWD)

CPU Reset (28) Diagnostic low (29) All the outputs are already in

Diagnostic low - (start-up)

ROM CRC Error (Operation

- Background task)

Enter Endless Loop:

- Progress (watchdog

Acknowledge)

- Set Outputs in Diagnostic

low

Immediate Diagnostic low

RAM Test Fail (Start up) CPU Reset Diagnostic low All the outputs are already in

Diagnostic low (start-up)

Calibration Data CRC Error

(Start-Up) Hamming Code Recovery

Start-Up Time is increased

by 3 ms if successful

recovery

Hamming Code Recovery

Error (Start-Up) CPU Reset Immediate Diagnostic low See section 13.8.3

Calibration Data CRC Error

(Operation - Background) CPU Reset Immediate Diagnostic low

Dead Zone Alpha

Dead Zone Beta

Set Outputs in Diagnostic

low. Normal Operation

until the “dead zone” is

left.

Immediate Diagnostic low Immediate recovery if the

“dead zone” is left

ADC Clipping

(ADC Output is 0000h or

7FFFh)

Set Outputs in Diagnostic

low. Normal mode and

CPU Reset If recovery

Immediate Diagnostic low

28 CPU reset means

1. Core Reset (same as Power-On-Reset). It induces a typical start up time.

2. Periphery Reset (same as Power-On-Reset)

3. Fault Flag/Status Lost

4. The reset can be disabled by clearing the RESONFAULT bit (See 13.8.1)

29 Refer to section 6 for the Diagnostic Output Level specifications

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REVISION 008 – SEPTEMBER 26, 2017

Fault Mode Action Effect on Outputs Remark

Radius Overflow (> 100%)

or Radius Underflow

(< 50 %)

Set Outputs in Diagnostic

low. Normal mode and

CPU Reset If recovery

Immediate Diagnostic low

(50 % - 100 %)

No magnet / field too high

See also section 13.5.2

Field Clipping (Radius <

FIELDTHRES_LOW or Radius

> FIELDTHRES_HIGH)

Set Outputs in Diagnostic

low. Normal mode, and

CPU Reset If recovery

Immediate Diagnostic low See also section 13.5.3

Rough Offset Clipping

(RO is < 0d or > 127d)

Set Outputs in Diagnostic

low. Normal mode, and

CPU Reset If recovery

Immediate Diagnostic low

Gain Clipping

(GAIN < GAINMIN or

GAIN > GAINMAX)

Set Outputs in Diagnostic

low. Normal mode, and

CPU Reset If recovery

Immediate Diagnostic low See also section 13.5.2

DAC Monitor (Digital to

Analog converter)

Set Outputs in Diagnostic

low. Normal Mode with

immediate recovery

without CPU Reset

Immediate Diagnostic low

ADC Monitor (Analog to

Digital Converter)

Set Outputs in Diagnostic

low. Normal Mode with

immediate recovery

without CPU Reset

Immediate Diagnostic low ADC Inputs are Shorted

Undervoltage Mode

At Start-Up, wait Until VDD

> 3V.

During operation, CPU

Reset after 3 ms

debouncing

- VDD < POR level =>

Outputs high impedance

- POR level < VDD < 3 V =>

Outputs in Diagnostic low

Firmware Flow Error CPU Reset Immediate Diagnostic low Intelligent Watchdog

(Observer)

Read/Write Access out of

physical memory CPU Reset Immediate Diagnostic low 100% Hardware detection

Write Access to protected

area (IO and RAM Words) CPU Reset Immediate Diagnostic low 100% Hardware detection

Unauthorized entry in

“SYSTEM” Mode CPU Reset Immediate Diagnostic low 100% Hardware detection

VDD > 7 V Set Output High

Impedance (Analog)

Pull down resistive load =>

Diag. Low

Pull up resistive load =>

Diag. High (29)

100% Hardware detection

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REVISION 008 – SEPTEMBER 26, 2017

Fault Mode Action Effect on Outputs Remark

VDD > 9.4 V

IC is switched off (internal

supply)

CPU Reset on recovery

Pull down resistive load =>

Diag. Low

Pull up resistive load =>

Diag. High

100% Hardware detection

Broken VSS CPU Reset on recovery

Pull down resistive load =>

Diag. Low

Pull up resistive load =>

Diag. High

100% Hardware detection.

Pull down load ≤ 10 kΩ to

meet Diag Low spec:

- < 2% VDD (temperature

suffix S and E)

- < 4% VDD ( temperature

suffix K)

- contact Melexis for

temperature suffix L

Broken VDD CPU Reset on recovery

Pull down resistive load =>

Diag. Low

Pull up resistive load =>

Diag. High

No valid diagnostic for

VPULLUP = VDD.

Pull up load (≤ 10kΩ) to

VPULLUP > 8 V to meet Diag

Hi spec > 96% VDD.

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REVISION 008 – SEPTEMBER 26, 2017

15. Serial Protocol

15.1.

Introduction

The MLX90333 features a digital Serial Protocol mode. The MLX90333 is configured as a Slave node. The

serial protocol of the MLX90333 is a three wires protocol (/SS, SCLK, MOSI-MISO):

 /SS pin is a 5 V tolerant digital input

 SCLK pin is a 5 V tolerant digital input

 MOSI-MISO pin is a 5 V tolerant open drain digital input/output

The basic knowledge of the standard SPI specification is required for the good understanding of the present

section.

15.2.

SERIAL PROTOCOL Mode

 CPHA = 1  even clock changes are used to sample the data

 CPOL = 0  active-Hi clock

The positive going edge shifts a bit to the Slave’s output stage and the negative going edge samples the bit

at the Master’s input stage.

15.3.

MOSI (Master Out Slave In)

The Master sends a command to the Slave to get the angle information.

15.4.

MISO (Master In Slave Out)

The MISO of the slave is an open-collector stage. Due to the capacitive load, a >1 kΩ pull-up is used for the

recessive high level (in fast mode). Note that MOSI and MISO use the same physical pin of the MLX90333.

15.5.

/SS (Slave Select)

The /SS pin enables a frame transfer (if CPHA = 1). It allows a re-synchronization between Slave and Master

in case of communication error.

15.6.

Master Start-Up

/SS, SCLK, MISO can be undefined during the Master start-up as long as the Slave is re-synchronized before

the first frame transfer.

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15.7.

Slave Start-Up

The slave start-up (after power-up or an internal failure) takes 16 ms. Within this time /SS and SCLK is

ignored by the Slave. The first frame can therefore be sent after 16 ms. MISO is Hi-Z (i.e. Hi-Impedance) until

the Slave is selected by its /SS input. MLX90333 will cope with any signal from the Master while starting up.

15.8.

Timing

To synchronize communication, the Master deactivates /SS high for at least t5 (1.5 ms). In this case, the

Slave will be ready to receive a new frame. The Master can re-synchronize at any time, even in the middle of

a byte transfer.

Note: Any time shorter than t5 leads to an undefined frame state, because the Slave may or may not have

seen /SS inactive.

Timings Min (30) Max Remarks

t1 2.3 μs / 6.9 μs -

No capacitive load on MISO.

t1 is the minimum clock period for any bits within a

byte.

t2 12.5 μs / 37.5 μs - t2 the minimum time between any other byte

t4 2.3 μs / 6.9 μs - Time between last clock and /SS = high = chip de-

selection

t5 300 μs / 1500 μs - Minimum /SS = Hi time where it’s guaranteed that a

frame re-synchronizations will be started.

t5 0 μs - Maximum /SS = Hi time where it’s guaranteed that

NO frame re-synchronizations will be started.

30 Timings shown for oscillator base frequency of 20MHz (Fast Mode) / 7 MHz (Slow Mode)

t6t1t1

t7 t1 t1 t1 t2

t4 t9t5

1 Startbyte Byte 0 Byte 1 Byte 2 Byte 7

/SS

MOSI/

MISO

SCLK

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REVISION 008 – SEPTEMBER 26, 2017

Timings Min (30) Max Remarks

t6 2.3 μs / 6.9 μs - The time t6 defines the minimum time between

/SS = Lo and the first clock edge

t7 15 μs / 45 μs - t7 is the minimum time between the StartByte and

the Byte0

t9 - < 1 μs Maximum time between /SS = Hi and MISO Bus

High-Impedance

TStartUp - < 10 ms / 16 ms Minimum time between reset-inactive and any

master signal change

15.9.

Slave Reset

On internal soft failures the Slave resets after 1 second or after an (error) frame is sent. On internal hard

failures the Slave resets itself. In that case, the Serial Protocol will not come up. The serial protocol link is

enabled only after the completion of the first synchronization (the Master deactivates /SS for at least t5).

15.10.

Frame Layer

15.10.1.

Frame Type Selection

See the programmable parameter XYZ in section 13.2.3 to select between the Alpha, Beta Frame and the

X, Y, Z Frame.

15.10.2.

Data Frame Structure

The Figure 9 gives the timing diagram for the SPI Frame. The latch point for the angle measurement is at the

last clock before the first data frame byte.

Figure 9 – Timing Diagram for the SPI Frame

Latch Point

SCLK

MOSI

MISO

/SS

Alpha Beta Error

X Y Z

XYZ = 0

XYZ = 1

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REVISION 008 – SEPTEMBER 26, 2017

A data frame consists of 8 bytes:

Data Frame XYZ = 0 XYZ = 1

1 start byte FFh

2 data bytes (LSByte first) Alpha X

2 data bytes (LSByte first) Beta Y

2 data bytes (LSByte first) Error Code Z

1 SUM byte 8 LSB of the sum of the transmitted bytes

15.10.3.

Timing

There are no timing limits for frames: a frame transmission could be initiated at any time. There is no inter-

frame time defined.

15.10.4.

Data Structure

The DATA could be a valid angle/field component or an error condition.

DATA: Angle/Field Component A[15:0] with (Span)/216

Least Significant Byte Most Significant Byte

MSB LSB MSB LSB

A7 A6 A5 A4 A3 A2 A1 A0 A15 A14 A13 A12 A11 A10 A9 A8

DATA: Error

Least Significant Byte Most Significant Byte

MSB LSB MSB LSB

E7 E6 E5 E4 E3 E2 E1 E0 E15 E14 E13 E12 E11 E10 E9 E8

BIT NAME Description

E0 -

E1 -

E2 F_ADCMONITOR ADC Failure

E3 F_ADCSATURA ADC Saturation (Electrical failure or field too strong)

E4 F_GAINTOOLOW The gain code is strictly less than EE_GAINMIN

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REVISION 008 – SEPTEMBER 26, 2017

BIT NAME Description

E5 F_GAINTOOHIGH The gain code is strictly greater than EE_GAINMAX

E6 F_NORMTOOLOW Goes high when the fast norm (the max of absolute X,Y,Z) is below 30%

E7 F_FIELDTOOLOW The norm (Square root) is strictly less than EE_FIELDLOW

E8 F_FIELDTOOHIGH The norm (Square root) is strictly greater than EE_FIELDHIGH

E9 F_ROCLAMP Analog Chain Rough Offset Compensation: Clipping

E10 -

E11 F_DEADZONEALPHA The angle ALPHA lies in the deadzone

E12 -

E13 -

E14 -

E15 F_DEADZONEBETA The angle BETA lies in the deadzone

15.10.5.

Angle Calculation

All communication timing is independent (asynchronous) of the angle data processing. The angle is

calculated continuously by the Slave:

 Slow Mode: every 1.5 ms at most.

 Fast Mode: every 350 μs at most.

The last angle calculated is hold to be read by the Master at any time. Only valid angles are transferred by

the Slave, because any internal failure of the Slave will lead to a soft reset.

15.10.6.

Error Handling

In case of any errors listed in section 15.10.4, the Serial protocol will be initialized and the error condition

can be read by the master.

In case of any other errors (ROM CRC error, EEPROM CRC error, RAM check error, intelligent watchdog

error…) the Slave’s serial protocol is not initialized. The MOSI/MISO pin will stay Hi-impedant (no error

frames are sent).

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REVISION 008 – SEPTEMBER 26, 2017

16. Recommended Application Diagrams

16.1.

Analog Output Wiring in SOIC-8 Package

Figure 10 – Recommended wiring in SOIC-8 package

16.2.

PWM Low Side Output Wiring

Figure 11 – Recommended wiring for a PWM Low Side Output configuration

100 nF

MLX90333

VDD

OUT2

Test 1

VSS

Test 0VDIG

Not Used

OUT1

100 nF

VDD

GND

Output 1

5 V

ECU

ADC

100 nF

Output 2

4.7 nF

10k

4.7 nF

100 nF

MLX90333

VDD

OUT2

Test 1

VSS

Test 0 VDIG

Not Used

OUT1

100 nF

4.7 nF

VDD

GND

PWM 1

5 V

ECU

ADC

4.7 nF

PWM 2

4.7 nF

5 V

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REVISION 008 – SEPTEMBER 26, 2017

16.3.

Analog Output Wiring in TSSOP-16 Package

Figure 12 – Recommended wiring in TSSOP-16 package (dual die)

ECU

VDD1

GND1

GND2

DIG

MLX90333

DIG

100nF

100 nF

C31

100 nF

C61

100 nF

GND1

GND2 ADC

C32

100 nF

C62

100 nF

VDD2

GND2

4.7nF

10 k

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REVISION 008 – SEPTEMBER 26, 2017

16.4.

Serial Protocol

Generic schematics for single slave and dual slave applications are described.

Figure 13 – SPI Version – Single Die – Application Diagram

Application Type

μCtrl

Supply

(V)

Pull-up

Supply

(V)

90316

Supply

(V)

R1 (Ω) R2 (Ω) R3 (Ω) R4 (Ω) R5 (Ω) MOS

Type

5V μCtrl w/o O.D. w/o 3.3V 5V 5V 5V 100 1000 20,000 1000 20,000 BS170

5V μCtrl w/o O.D. w/ 3.3V 5V 3.3V 5V 150 1000 N/A 1000 20,000 BS170

3.3V μCtrl w/o O.D. (31) 3.3V 3.3V 5V 150 1000 N/A N/A N/A BS170

5V μCtrl w/ O.D. w/o 3.3V (32) 5V 5V 5V 100 1000 20,000 1000 20,000 N/A

3.3V μCtrl w/ O.D. 3.3V 3.3V 5V 150 1000 N/A N/A N/A N/A

Table 6 – Resistor Values for Common Specific Applications

31 μCtrl w/ O.D. : Micro-controller with open-drain capability (for instance NEC V850ES series)

32 μCtrl w/o O.D. : Micro-controller without open-drain capability (like TI TMS320 series or ATMEL AVR)

100 nF

MLX90333

VDD

SCLK

Test 1

VSS

Test 0 VDIG

/SS

MOSI

100 nF

3.3V/5V

SPI Master

5 V

MISO

MOSI

SCLK

_SS

GND

_SS

MOSI

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REVISION 008 – SEPTEMBER 26, 2017

17. Standard information regarding manufacturability

of Melexis products with different soldering processes

Our products are classified and qualified regarding soldering technology, solderability and moisture

sensitivity level according to standards in place in Semiconductor industry.

For further details about test method references and for compliance verification of selected soldering

method for product integration, Melexis recommends reviewing on our web site the General Guidelines

soldering recommendation (http://www.melexis.com/en/quality-environment/soldering).

For all soldering technologies deviating from the one mentioned in above document (regarding peak

temperature, temperature gradient, temperature profile etc), additional classification and qualification tests

have to be agreed upon with Melexis.

For package technology embedding trim and form post-delivery capability, Melexis recommends consulting

the dedicated trim&forming recommendation application note: lead trimming and forming

recommendations (http://www.melexis.com/en/documents/documentation/application-notes/lead-

trimming-and-forming-recommendations).

Melexis is contributing to global environmental conservation by promoting lead free solutions. For more

information on qualifications of RoHS compliant products (RoHS = European directive on the Restriction Of

the use of certain Hazardous Substances) please visit the quality page on our website:

http://www.melexis.com/en/quality-environment.

18. ESD Precautions

Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).

Always observe Electro Static Discharge control procedures whenever handling semiconductor products.

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REVISION 008 – SEPTEMBER 26, 2017

19. Package Information

19.1.

SOIC-8 - Package Dimensions

19.2.

SOIC-8 - Pinout and Marking

0.19

0.25

NOTES:

All dimensions are in millimeters (angles in degrees).

* Dimension does not include mold flash, protrusions or

gate burrs (shall not exceed 0.15 per side).

** Dimension does not include interleads flash or

protrusion (shall not exceed 0.25 per side).

*** Dimension does not include dambar protrusion.

Allowable dambar protrusion shall be 0.08 mm total in

excess of the dimension at maximum material condition.

Dambar cannot be located on the lower radius of the foot.

5.80

6.20

1.27 TYP

4.80

4.98*

1.52

1.72

0.100

0.250

1.37

1.57

0.36

0.46***

3.81

3.99**

0°

8°

0.41

1.27

Marking :

Part Number MLX90333 (3 digits)

333

Die Version (3 digits)

M12345

Week Date code (2 digits)

Year Date code (2 digits)

YY WW

Bxx

SCLK

333Bxx

M12345

Xy-E

/SS

Switch

Test 0

MOSI/MISO

Test 1

DIG

Top

Bottom

Split lot number + “-E” (Optional )

Xy-E

Lot number: “M” + 5 digits

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REVISION 008 – SEPTEMBER 26, 2017

19.3.

SOIC-8 - IMC Positionning

0.46 +/- 0.06

1.25

1.65

1.96

2.26

1 2 3 4

8765

CCW

COS

SIN

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Page 46 of 48

REVISION 008 – SEPTEMBER 26, 2017

19.4.

TSSOP-16 - Package Dimensions

0.09

0.20

1.0 DIA

NOTES:

All dimensions are in millimeters (angles in degrees).

* Dimension does not include mold flash, protrusions or gate burrs (shall not exceed 0.15 per side).

** Dimension does not include interleads flash or protrusion (shall not exceed 0.25 per side).

*** Dimension does not include dambar protrusion. Allowable dambar protrusion shall be 0.08 mm total in excess of the

dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot.

0.20 TYP

TYP

0.09 MIN

0.50

0.75

1.0 TYP

TYP

6.4 TYP

4.30

4.50**

0.65 TYP

1.0

4.90

5.10*

1.1 MAX

0.05

0.15

0.85

0.95

0.19

0.30***

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Page 47 of 48

REVISION 008 – SEPTEMBER 26, 2017

19.5.

TSSOP-16 - Pinout and Marking

19.6.

TSSOP-16 - IMC Positionning

Marking :

Part Number MLX90333 (3 digits)

333

Die Version (3 digits)

M12345 Lot number: “M” + 5 digits

Week Date code (2 digits)

Year Date code (2 digits)

YY WW

VDD

OUT2

/SCLK

Test 1

VSS

Test 0

OUT1

/MOSI/MISO

VDIG

/SS

OUT1

/MOSI/MISO

VSS

333Bxx

M12345

Xy-E

Test 0

VDD

/SS

OUT2

/SCLK

VDIG

Test 1

Bxx Standard

SPI Version

Top

Bottom

Xy-E Split lot number + “-E” (Optional)

0.30 +/- 0.06

1.95

2.45

1.84

2.04

2.76

2.96

1 8

916

CCW

COS 2

COS 1

SIN 2 SIN 1

Die 2Die 1

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Page 48 of 48

REVISION 008 – SEPTEMBER 26, 2017

20. Disclaimer

The information furnished by Melexis herein is believed to be correct and accurate. Melexis disclaims (i) any and all liability in

connection with or arising out of the furnishing, performance or use of the technical data or use of the product as described herein,

(ii) any and all liability, including without limitation, special, consequential or incidental damages, and (iii) any and all warranties,

express, statutory, implied, or by description, including warranties of fitness for particular purpose, non-infringement and

merchantability. No obligation or liability shall arise or flow out of Melexis’ rendering of technical or other services.

The information contained herein is provided "as is” and Melexis reserves the right to change specifications and/or any other

information contained herein at any time and without notice. Therefore, before placing orders and/or prior to designing this

product into a system, users or any third party should obtain the latest version of the relevant information to verify that the

information being relied upon is current. This document supersedes and replaces all prior information regarding the product(s) as

described herein and/or previous versions of this document.

Users or any third party must further determine the suitability of the Melexis’ product(s) described herein for its application,

including the level of reliability required and determine whether it is fit for a particular purpose.

The information contained herein is proprietary and/or confidential information of Melexis. The information contained herein or

any use thereof does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property

rights, whether with regard to such information itself or anything described by such information.

This document as well as the product(s) described herein may be subject to export control regulations. Please be aware that export

might require a prior authorization from competent authorities.

The product(s) as described herein is/are intended for use in normal commercial applications. Unless otherwise agreed upon in

writing, the product(s) described herein are not designed, authorized or warranted to be suitable in applications requiring extended

temperature range, unusual environmental requirements. High reliability applications, such as medical life-support or life-

sustaining equipment are specifically not recommended by Melexis.

The product(s) may not be used for the following applications subject to export control regulations: the development, production,

processing, operation, maintenance, storage, recognition or proliferation of 1) chemical, biological or nuclear weapons, or for the

development, production, maintenance or storage of missiles for such weapons: 2) civil firearms, including spare parts or

ammunition for such arms; 3) defense related products, or other material for military use or for law enforcement; 4) any

applications that, alone or in combination with other goods, substances or organisms could cause serious harm to persons or goods

and that can be used as a means of violence in an armed conflict or any similar violent situation.

Products sold by Melexis are subject to the terms and conditions as specified in the Terms of Sale, which can be found at

https://www.melexis.com/en/legal/terms-and-conditions.

ISO/TS 16949 and ISO14001 Certified

21. Contact

For the latest version of this document, go to our website at www.melexis.com. For additional information,

please contact our Direct Sales team and get help for your specific needs:

Europe, Africa Telephone: +32 13 67 04 95

Email : sales_europe@melexis.com

Americas Telephone: +1 603 223 2362

Email : sales_usa@melexis.com

Asia Email : sales_asia@melexis.com