EVB90129 - Melexis
Contents
1. e External MCU as SPl Master and MLX90129 as SPI Slave e MLX90129 as SPI Master and external memory as SPl Slave data logging application e External MCU as SPI Master and external memory as SPI Slave By selecting the connection of the Slave Selects the SPI communication channels are switched as shown in the following schematic and draws External MCU lt gt MLX90129 MLX90129 lt gt External memory External MCU lt gt External memory SS selector SS selector SS selector SS MEM Q SS MEM SS Jumper SS_29 SS_Jumper SS_29 CON4 mi CON4 390129012901 Page 6 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 3 3 RFID antenna The EVB antenna has been designed to work with a 13 56MHz electromagnetic field The antenna can be directly connected to the MLX90129 through pins COIL1 and COIL2 The Shortcut R1 and R2 allows for disconnecting the antenna and R3 and C1 footprint components not mounted could be used to match MLX90129 with another antenna The following schematic and drawing show the antenna connection and the antenna shape TPI O COILI R Cl us 1K 47p COIL2 a k OR TP2 Rectangular PCB antenna 2820 x 2020 Mils MR3 and Cl are wire lt 30 Mils space lt 15 Mis three tunrs not mounted L 1 838 uH 2820 mil 7 16 cm2. 4 Notwithstanding the fact that Melexis endeavors to take care of the concept and content of this documentation it may include technical or factual inaccuracies or typographical errors Melexis disclaims any responsibility in connection herewith 5 Melexis reserves the right to change the documentation the specifications and prices at any time and without notice Therefore prior to designing this product into a system it is necessary to check with Melexis for current information 6 Melexis shall not be liable to recipient or any third party for any damages including but not limited to personal injury property damage loss of profits loss of use interrupt of business or indirect special incidental or consequential damages of any kind in connection with or arising out of the furnishing performance or use of the information in this documentation 7 The product described in this documentation is intended for use in normal commercial applications Applications requiring operation beyond ranges specified in this documentation unusual environmental requirements or high reliability applications such as military medical life support or life sustaining equipment are specifically not recommended without additional processing by Melexis for each application 8 Any supply of products by Melexis will be governed by the Melexis Terms of Sale published on www melexis com Melexis NV All rights reserved For the latest version of th
3. CON7 The external temperature sensor is a thermistor of SENSSUPI 4 3 o o o 1KOhm with an operating temperature range from 40 to 2 i 125 degrees Celsius The output voltage monitored by TEMP_SELECTOR R8 SENS 3 corresponds to SENSSUP1 divided per 2 plus 10K the variation of the sensor This voltage will be compared A with VCM SENSSUP1 divided by 2 value internally of e 7q the MLX90129 The datasheet gives more information about this setup To be used all the jumpers of the CON7 TEMP_SELECTOR have to be set in order to connect MLX90129 pins SENSSUP1 and SENS3 to the 10K sensor The schematic shows the sensor implementation and the following register configuration allows monitoring li the ambient temperature through the MLX90129 an Content Hexa Low threshold 0000 4 4 Potentiometer sensor sans ME n DL The external trimmer is a 100 Ohm variable resistor The output voltage monitored by SENS 4 corresponds to Eels Te SENSSUP1 divided per 2 plus the variation of the sensor This voltage will be compared with VCM SENSSUP1 divided by 2 value internally of the MLX90129 The 2 RIB datasheet gives more information about this setup 100R To be used all the jumpers of the CON8 7 TRIM SELECTOR have to be set in order to connect MLX90129 pins SENSSUP1 and SENS4 to the sensor R11 The schematic shows the sensor implementation and the 10K following register configuration a
4. the external memory The schematic shows the memory 7 HOLD CAT25128 implementation and the following register configuration jon W allows the MLX90129 to communicate with the memory S as a SPI master More information is available in the MLX90129 datasheet The SPI memory datasheet gives the following commands Write Enable 0x06 GND Write Memory 0x02 Read Memory 0x03 SS MEM 1 The MLX90129 has to be in SPI master mode The bit 0 of the Device security register has to be set either in EEPROM restricted access by RFID or in the register files Content Hexa Controlword OD 0639 0203 3FFI 5 3 External XTAL For Auto logging function an external precise clock can be used to enhance timing between two sensor sti acquisitions The 32 768 KHz crystal is connected XN 174 XOUT between the pins XIN and XOUT of the MLX90129 The a bit 14 of the Internal Devices Domain address 03 has to ai be set 390129012901 Page 10 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 5 4 Test points and patch area Some analogue outputs are foreseen on the evaluation board as test pins referenced from TP1 to TP4 These test pins can be used to monitor signals In order to connect other sensors to the MLX90129 a patch area is available The following
5. 120 mil 2020 mil 304 mm 5 13 cm Bottom view 2865 mil 7 28 cm Bottom view For information 1 mil 2 54E 3 cm 3 4 Register Configuration There are a lot of possible configurations for enabling communication features For example SPI or RFID access can be disabled and EEPROM area or register file access can be restricted The following configuration puts the MLX90129 in a security free mode The device is fully accessible by RFID and SPI More information is available in the MLX90129 datasheet Content 390129012901 Page 7 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 4 Sensor description EVB90129 is delivered with three external sensors in addition to the internal temperature sensor of the MLX90129 a light sensor an external temperature sensor and a potentiometer For each sensor the schematic and a configuration of the MLX90129 register is provided The sensors are provided as examples and have not been calibrated The configuration provided is basic there is no amplification per default gain 8 no threshold and no offset with the DAC The ADC mode is 11 the initialization time is minimal and there is no averaging so the chopper is disabled The datalogging control bits b4 b5 b6 of the Control word are set The MLX90129 datasheet provides more details about the register configuration The basic following configurati
6. are received through the SPI connector and the SS Selector allows selecting the communication channel RFID signals are received through the RFID antenna connected to the MLX90129 3 1 External SPI connector The digital Inputs Outputs of the SPI bus and the IRQ CONI pin of the MLX90129 are available on the connector SDD pl 1 2 von CON1 CON SPI In addition the external SPI connector MOSI 3 4 SCK provides pins to supply EVB90129 VDD_SPI and 5 6 RI4 VREG GND and a connection to the Voltage Regulated 7 8 output VREG The following table schematic and e CON SPI OR diagram give information about the SPI connector Per GND default the resistor R14 is not mounted 390129012901 Page 5 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems Pin 1 O Name Description Interrupt output Slave Select signal of the SPI bus VDD SPI External power suppl Master In Slave Out of the SPI bus MOSI Master Out Slave In of the SPI bus 6 mput SCK Clock of the SPI bus Input Ground of the EVB 8 Output VREG Regulated supply voltage from MLX90129 Not connected per default R14 not mounted 3 2 Slave Select selector The CON4 SS Selector allows switching between the several SPI a devices on the EVB There are three communication channels SS MCU SS 29 7 SS MEM SS Selector
7. B90129 Reference Value 100nF 4u7 F 100nF 100nF CON SPI VDD Selector Ext Mem Selector SS Selector LIGHT SELECTOR TEMP SELECTOR TRIM SELECTOR Pad Lock MLX90129 4 7V Z600 TEPT5700 OR OR 100K 100R OR 10K 10K 10K 10K 1K 100R OR 1M Black Black Black Black M95128 WMN6P 32K768 Components not mounted 390129012901 Rev 003 Description Battery Holder 1 x CR2032 Battery CR2032 Capacitor Capacitor Multilayer Ceramic X7R 50V Capacitor Tantalum 4 7uF 16V Capacitor Multilayer Ceramic X7R 50V Capacitor Multilayer Ceramic X7R 50V Header 2x4 pins pitch 2 54mm Male Straight Header 1x3 pins pitch 2 54mm Male Straight Header 1x2 pins pitch 2 54mm Male Straight Header 2x2 pins pitch 2 54mm Male Straight Header 2x3 pins pitch 2 54mm Male Straight Header 2x2 pins pitch 2 54mm Male Straight Header 2x2 pins pitch 2 54mm Male Straight Header 1x2 pins pitch 2 54mm Male Straight MLX90129 soldered TSSOP20 Zener diode Ferrite Bead 1206 Z 600ohm 100MHz Current 200mA Phototransistor Sensor ambient light Resistor Thick Film OR 0805 0 125W 1 150V Resistor Thick Film OR 0805 0 125W 1 150V Resistor Resistor Thick Film 100K 0805 0 125W 1 150V Resistor Thick Film 100R 0805 0 125W 1 150V Resistor Thick Film OR 0805 0 125W 1 150V Resistor Thick Film 10K 0805 0 125W 1 150V Resistor Thick Film 10K 0805 0 125W 1 150V Resistor Thi
8. EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems Features and Benefits Application Example LI Versatile A D interface for resistive sensors U Asset management and monitoring security LO 15015693 13 56MHz transponder and integrity U Slave Master SPI interface Q Building automation L 4k bit EEPROM with access protection Q Supply chain monitoring of temperature and LI Standalone data logging mode other parameters U Ultra low power U Industrial medical and residential control U Battery or battery less applications U Low cost and compact design Ordering Information Part No EVB90129 General Description The EVB90129 is an assembled printed circuit board that simplifies evaluation of the MLX90129 sensor tag IC and to facilitate the development of wireless sensor applications based on the MLX90129 The EVB90129 was developed to demonstrate a wide range of applications from fully passive sensor tag operation to complex data logging Each of its elements can be reconfigured by means of jumpers The board can be powered either by an external voltage supply the on board battery or the electromagnetic field from a RFID reader Id i5855 Oba 5 8 In addition to the internal temperature sensor of the MLX90129 the EVB90129 embeds 3 external sensors light temperature and potentiometer to demonstrate the flexibility for measurement of a variety of physical quantities The custom prototypi
9. ck Film 10K 0805 0 125W 1 150V Resistor Thick Film 10K 0805 0 125W 1 150V Thermistor 1K 0805 0 1W 5 50V TCR 3000ppm DegC POTENTIOMETER 100R 0 5W 10 300Vdc turns 1 Resistor Resistor Test Terminal BLACK Head 1 3mm Test Terminal BLACK Head 1 3mm Test Terminal BLACK Head 1 3mm Test Terminal BLACK Head 1 3mm 128Kbit Serial SPI Bus EEPROM Quartz Crystal MD 6 9x1 4x1 3mm 32 768kHz 20ppm Page 12 of 13 Evaluation Board June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 9 Disclaimer 1 The information included in this documentation is subject to Melexis intellectual and other property rights Reproduction of information is permissible only if the information will not be altered and is accompanied by all associated conditions limitations and notices 2 Any use of the documentation without the prior written consent of Melexis other than the one set forth in clause 1 is an unfair and deceptive business practice Melexis is not responsible or liable for such altered documentation 3 The information furnished by Melexis in this documentation is provided as is Except as expressly warranted in any other applicable license agreement Melexis disclaims all warranties either express implied statutory or otherwise including but not limited to the merchantability fitness for a particular purpose title and non infringement with regard to the content of this documentation
10. data during data logging application an external SPI memory is available The following diagram describes the principles of the EVB90129 and the following pictures describe the hardware blocks Power Supply selection e VDD Light T i sensor LE Lane T 4 C SENSSUP1 8 Temperature ia a eni i Serial SPI EEPROM Trimmer I SENS4 Sensor di ig e EVB Antenna 390129012901 Page 3 of 13 Evaluation Board Rev 003 June 2010 3 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems Power supply selector MLX90129 External Xtal s 8 mn f ejiejejejojeiejo jejojoje Padlock 3 jumper E External memory jumper g L On Y O MLXx9012 evb 2 Light Temperature Trimmer Sensor Sensor Sensor Battery EVB90129 Top hardware block description External memory HSER ie iri ii ie DOGGEGEGEEES Mejojejefejejojejojejz efejejoje jojoiojajejs alojslalslajstejsjejo ejalelelejsjelsjesleje Nojesjeslolesloslosleloleje oleleleleolelelelelele gt MEXSO123S_evb_2 EVB90129 Bottom hardware block description 390129012901 Page 4 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 2 EVB90129 Power Supplies sae The EVB90129 allows supplying the MLX90129 through three 3 Lara ways Power supply can be provided by a battery CR2032 by VDD BAT 7600 an external power supply input or a b
11. is document go to our website at www melexis com Or for additional information contact Melexis Direct Phone 32 1367 0495 Phone 1 603 223 2362 Phone 32 1367 0495 E mail sales europe melexis com E mail sales usa melexis com E mail sales asia melexis com 390129012901 Page 13 of 13 Evaluation Board Rev 003 June 2010
12. llows monitoring the La variation of trimmer resistivity through the MLX90129 Content Low threshold 1 ME Resistance network 1A 0040 390129012901 Page 9 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 5 Miscellaneous peripheries 5 1 Padlock or security device function TP3 The pin 7 of the MLX90129 can be used as a Padlock Misi ki Z NO function else it has to be connected to the ground The CONI3 padlock function allows generating an IRQ when the 2 onn jumper between pin 7 and the ground is removed m The schematic shows the Padlock jumper implementation Patat and the following register configuration allows configuring ki the MLX90129 in order to use this feature GND Content 5 2 External SPI memory The MLX90129 can be connected to a SPI external memory in order to store a large amount of data during a CON3 data logging application An external 128Kbit memory is 2 VREG available on the EVB90129 lt can be connected by 1 ai setting the jumper CON3 ExtMemsSelector In this E ae Ne Coseto pin Voc configuration the external memory is supplied by the R4 imaju regulated voltage output VREG of the MLX90129 The 100K a 100n SPI pins SS SCK MISO MOSI are connected to the ME m no MLX90129 SPI pins The CON4 SS selector allows sk 6 PSR connecting the SS pin of the MLX90129 to the SS pin of U2
13. n ate kat n a et e a ea ea a n aka m an n a a an an la kaa e ak on n kel a ent 6 BF ONE A e e fk e et n a a at ka e al e a a e a a O O a ke KEMA ik a e te l NE NI NA 7 94 REGISTER CONAGUA ATO et e A A EEA A TOME ok A e a at a n a kak 7 A SENSOR DESCRIPTION s aa is w na n doit tail tt tt di tall kk tt a ka ka n a e e a R me kn m e el tn A 8 4 1 INTERNAL TEMPERATURE SENSOB wit 0 300 win et ot osnon aou cast ot pol kk te tk ik lk n n a ian mf e n od m n nat ia 8 AA LGI SE NOU PI eat it at cee cco e al ti AE NE a A A a ka ea ae an ee NE ea e 8 4 3 EXTERNAL TEMPERATURE SENSE nm 9 4 4 POTENTIOMETER SENSOR nana 9 5 MISCELLANEOUS PERIPHERIES cccccccecececcececsccecsceceecececeesececeececeneeseaenesesaeseeenaeseeneneess 10 5 1 PADLOCK OR SECURITY DEVICE FUNCTION ii wicikw s tin ewo bw nt odyo e kl 1 kil l ko a a A f ie an al ke l e ei pen ee n 10 9 2 ETER NAP MENM O FY ta tabi kb an ve l e n e eee eee 10 SEKTE si O n ta ta a e a n ee ee ee ke na da n e eae e e l a eee ee 10 5 4 TEST POINTS AND PATCH AREA ete entitisyon kl a kep et e n ko a a wt ri gate e la at kk 11 6 USING THE EVB90129 ki kika at ii ti ft eti ie al ka ta a ni an e e aaa ke di a e n e e jn e ta k aa k a e 11 5CGHEMATIO arrestee sce kwen a leu ee de atann ent t is ees ets mt l tn ekla nek lt a k n e P n a e an e ear nan 11 8 LIST OF COMPONENTS 0000 te tett ta kana n nn nn n nn na n nn na nn kn anana na aaa na aaa nana aaaaanaasasansosassososansnsnananan
14. nanaon 12 9 DISCLAIMER t dni tata wi fi tn t at ca da e E e a ak e e a kisa m 13 390129012901 Page 2 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 1 EVB90129 global description The EVB90129 simplifies evaluating all the features of the MLX90129 The following application can be executed on the EVB90129 e Sensor control via SPI application with a microcontroller Passive sensor tag Sensor control via RFID without battery Automatic data logging of the three sensors values logged to the external memory Automatic data logging of the three sensors values logged to the MLX90129 memory External memory access via RFID Padlock or security device function antitheft system EVB90129 provides three ways to supply the MLX90129 A battery an external voltage or the electromagnetic field can be used There are two communication channels to communicate with MLX90129 SPI and RFID The SPI signals are available through the SPI connector and the RFID antenna has been tuned to match with the MLX90129 internal capacitance EVB90129 provides four sensors the MLX90129 internal temperature sensor and three external sensors The three external sensors are composed of a light sensor an external temperature sensor and one potentiometer Another sensor can be connected to the MLX90129 using the prototyping development area included on the EVB To store a large amount of
15. ng area allows users to integrate their own sensor or circuit into this evaluation board o 4 o W A u 2 K kat A Y ry a a 4 J ow Qo 3 GOGO0000 Jalal LWA 7 6ZTO6XIH aooga nooooooooo releleleleleleleleleile Z GA The EVB90129 is capable of storing 128 Kbit of data s in the SPI EEPROM memory connected to the MLX90129 1072009 The EVB90129 can be accessed and controlled through a contactless RFID or a contact SPI interface The RFID access to the MLX90129 and the related commands are compliant with the 15015693 standard The SPI and other digital inputs outputs from the MLX90129 are connected to an 8 pin connector of the EVB90129 This allows easy connection to a microcontroller 390129012901 Page 1 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems Table of Contents 1 EVB90129 GLOBAL DESCRIPTION cccccccececencncecencecececcececeneeceneaeeceneneeeeneuseaeneeasenseneaeaseass 3 2 EVB90129 POWER SUPPLIES Qo ta tata ka tk kan nn n n nn n n nn n nna nannan nana ana aaa aa naaeasanaseasansasananansansnannannon 5 3 EVB90129 COMMUNICATION 0 tt tt tt tt knn n nn n n nn nn n n nn nn n nen nannan na nen nana aaa aa naaaananaaaanansasanansnsansnansanaon 5 3 1 EXTERNAL SP CONNECTOR letri av ti etat t l saint it aaa tn e e n a an a al in ked n a ye ee ka oka ian ea 5 3 2 SLAVE SELECT SELECTOR otaj ake train t
16. on for sensor conditioning can be used for all sensors Content Hexa 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Sensor power 12 00FF 0 0 FOF o Mom o FOF o EA 1 EA 1 MA 1 Ha OTTO T means Melexis trimming bits Do not change 4 1 Internal temperature sensor The specifications of the internal temperature sensor are available in the MLX90129 datasheet The following register configuration allows monitoring the full range of the internal temperature sensor Content Hexa Resistance network CON6 SENS2 4 2 Light sensor SENSI aa SENSSUP2 i The light sensor is a phototransistor for ambient light sensor LIGHT SELECIOR measurement To use it all the jumpers of the CON6 Ql LIGHT_SELECTOR have to be set in order to connect MLX90129 TEPTS700 A pins SENSSUP2 SENS1 and SENS2 to the sensor S The schematic shows the sensor implementation and the following R6 register configuration allows monitoring the ambient light on the a phototransistor through the MLX90129 ki This sensor fits mainly for the sun light monitoring The output voltage R with flashlight is very low l Content Hexa Low threshold 0000 390129012901 Page 8 of 13 Evaluation Board Rev 003 June 2010 EVB90129 M e lexi 5 MLX90129 Evaluation Board Microelectronic Integrated Systems 4 3 External temperature sensor
17. table describes all test pins available and the following schematic shows the signals available on the patch area CONS Test pins number Name Description SENSSUPI SENSSUP2 SENSI END 4 SENS3 SENS 6 Ground VREG 8 Patch area 6 Using the EVB90129 i The EVB90129 can be configured and controlled through its RFID and its SPI interface Please refer to the MLX90129 Datasheet and the application notes for information about register configuration and command description A bad configuration can lock the MLX90129 communication completely Care should be taken about the command sent and the configuration applied In order to avoid bad manipulation and to speed up the development the MLX90129 development kit is available DVK90129 It contains the EVB90129 a USB RFID reader and user friendly software interface Please refer to our website www melexis com for more information 7 Schematic Schematic of the MLX90129 evaluation board TI Rectangular PCB antenna 2620 x 2020 Mil wire 3 k l space 15 Mils time tanm L 1838 L fea BAT HOLDER HUDG2 LF htt HAT Li 3V 235mAh CRION WwW BS 16 UMN P 390129012901 Page 11 of 13 Evaluation Board Rev 003 June 2010 Melexis Microelectronic Integrated Systems 8 List of components EVB90129 MLX90129 Evaluation Board The table below gives an overview of all components that compose the evaluation board EV
18. y an electromagnetic da field from a RFID reader The jumper CON2 VDD Selector PP Seecior a allow selecting the regulated source of power This source is filtered by Li and C5 C3 is not mounted The energy from an applied electromagnetic field is collected with the 13 56MHz GND tuned antenna through the pin COIL1 and COIL2 A Zener diode on the VFIELD pin ensures the compliance with the 22 maximum electrical rating defined in the MLX90129 Di datasheet Indeed very powerful reader could provide A Ma enough energy to exceed this rating The 100 nF capacitor C2 on VFIELD pin allows storing of this energy in order to 1 supply the MLX90129 and the external sensor in sensor tag a application GND The following drawings show how to set jumpers in order to select the power supply source External power supply Battery powered Electromagnetic field powered IV DIDE I lejieje IV DIBE I leireje AVADIDEES ETeito s a VDD_Jumper VDD_Jumper 6 T SPI C Board Board Board wnf ad INJ BAT COND SPI i BAT CON JE BA Jed Depending on the mode used care should be taken about the internal MLX90129 switches for power management Please read the datasheet for more information on this topic 3 EVB90129 Communication The EVB90129 allows communication with the MLX90129 through SPI and RFID and also between the MLX90129 and an external memory during a data logging application The SPI signals
Download Pdf Manuals
Related Search