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Technical content

Features

  • Single IC, Smart Passive Sensing
  • Small Form Factor Packages
  • Indirect Moisture Contact Sensing
  • On−chip RSSI Sensor
  • 64 bit TID and 128 bit EPC + 144 Bit User Defined Memory
  • EPC Class 1 Gen 2 v.2.0.0 ISO 18 000−6C Compliant
  • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

Applications

  • Medical
  • Industrial
  • Facilities Management MAXIMUM RATINGS (TA = 25°C unless otherwise noted) Rating Symbol Max Unit Human Body Model (Note 1) ESD ±1 kV Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Non −repetitive current pulse at T A = 25°C, per JS−001 waveform. THERMAL CHARACTERISTICS Characteristic Symbol Max Unit Operating and Storage Temperature Range (Note 2) TOP, Tstg −20 to +85 °C 2. Shelf Life − minimum 2 years from date of manufacturing. www.onsemi.com RF TAG 104.78x19.05MM CASE 888AB/AC See detailed ordering and shipping information on page 5 of this data sheet.

ORDERING INFORMATION

Table 2. MEMORY MAP

11 USER

10 TID READ ONLY

01 EPC

00 RESERVED

www.onsemi.com Tag Memory Memory Configuration Memory is organized according to the EPCglobal Generation−2 UHF RFID specification. There are two possible configurations for the EPC ID:

  • 8−word EPC code and 9 free words in the USER memory bank, as shown in the Memory Map
  • 17−word EPC code and no free USER memory (EPC lengths above 11 words may not be supported on all readers.) The 8−word configuration is the default. To change to the 17−word configuration, write 0001h to the EPC Bank, word address 14h. The memory can be reset to the default 8−word EPC configuration by writing 0000 h to the same location. This EPC configuration can be configured and reconfigured repeatedly as long as the EPC memory bank is not permanently locked by a LOCK command. Once the EPC memory bank is permanently locked, it cannot be reconfigured. Reserved Memory − Passwords Reserved Memory contains the ACCESS and KILL passwords. There is a 32−bit Access Password and a 32−bit Kill Password. The default for both Kill and Access Passwords is 0000h. Access Password The Access Password is a 32−bit value stored in Reserved Memory 20 h to 3F h MSB first. The default value is all zeroes. Tags with a non−zero Access Password will require a reader to issue this password before transitioning to the secured state. Kill Password The Kill Password is a 32 −bit value stored in Reserve Memory 00 h to 1F h, MSB first. The default value is all zeroes. A reader shall use a tag’s kill password once to kill the tag and render it silent thereafter. A tag will not execute a kill operation if its Kill Password is all zeroes. EPC Memory − EPC data, Protocol Control Bits, and CRC16 As required by the Gen −2 specification, EPC memory contains a 16 −bit cyclic −redundancy check word (StoredCRC) at memory addresses 00 h to 0F h, the 16 protocol−control bits (StoredPC) at memory addresses 10h to 1Fh, and an EPC value beginning at address 20h. The protocol control fields include a five−bit EPC length, a one−bit user−memory indicator (UMI), a one−bit extended protocol control indicator, and a nine−bit numbering system identifier (NSI). On power−up, the IC calculates the StoredCRC over the stored PC bits and the EPC specified by the EPC length field in the StoredPC. For more details about the StoredPC field or the StoredCRC, please see the Gen 2 specification. The StoredCRC, StoredPC, and EPC are stored MSB first (i.e. the EPC’s MSB is stored in location 20h). Tag Identification (TID) Memory The read−only Tag Identification memory contains the manufacturer−specific data. The manufacturer Mask Designer ID (MDID) is 824h (bits 08h to 13h). The logic 1 in the most significant bit of the MDID indicates the presence of an extended TID consisting of a 16−bit header and a 48−bit serialization. The Magnus−S2 model number is in bits 10h to 1Fh and the EPCglobal® Class ID (E2h) is in 00h to 07h. Sensor Functions Accessing the Sensor Code The Magnus −S2 Chameleon engine stores tuning information in a user −accessible memory register. The “Sensor Code” register (B0h−BFh in the Reserved memory bank) contains the current setting and controls the tuning capacitors that are used to adjust the input impedance. To get the results of the self −tuning operation, a READ command may be issued for the Sensor Code (B0 h −BFh in the Reserved memory bank). Because the tuning network offers 32 different levels of impedance, only the 5 least significant bits (BB h −BFh) in the register are actually implemented and used. (The 32 levels represent increasing amounts of capacitance added to the input impedance, with the lowest capacitance applied at level 0.) Returned results will be in the form 0000 0000 000x xxxx, where the 5 LSBs define the current tuning. For use in sensing applications, the Sensor Code register can be monitored for changes over time or at different locations, or it can be checked for changes to a baseline reading that is taken when the tag is placed into service. Depending on the needs of the application, the reference or baseline value(s) may be written back into regular user memory or may be stored elsewhere on the user’s network. The SPSXF001 may require more than its minimum sensitivity power in order to sense values near the ends of the code range (0−5 and 27−31). The minimum required power tends to increase gradually as the Sensor Code moves from 5 to 0 or from 27 to 31. Overriding Default Chameleon Behavior By default, the Chameleon engine will self −tune when Magnus−S2 powers up, and the tuning capacitance chosen will be held constant until the chip powers down. There are also two additional modes: Chameleon can tune continuously – not just at power up – and Chameleon can be forced to a user−chosen setting. To cause Chameleon to adjust continuously while Magnus−S2 is powered up, write 0800 h to the Analog

www.onsemi.com Overwrite word (address 50 h−5Fh in the Reserved Bank) using a standard WRITE command. To force Chameleon to a desired setting, write 4000h to the Analog Overwrite word, and the tuning value to the Sensor Overwrite word (address F0 h−FFh in the Reserved Bank) with standard WRITE commands. The tuning value format is 0000 0000 000x xxxx, where x_xxxx represents the desired 5−bit tuning. When the above sequence is executed correctly, the setting x_xxxx will be transferred into the Sensor Code register and will be held constant until the next power−up or until the user writes a different value into the Sensor Overwrite word. The Analog Overwrite word is non −volatile: values written will persist through chip power cycles. The Sensor Overwrite word is volatile: if a fixed Chameleon setting is desired, it must be re −written every time Magnus −S2 is powered up. On−Chip RSSI Code Magnus−S2 incorporates circuitry that measures incoming signal strength and converts it to a digital value: the On −Chip RSSI (Received Signal Strength Indicator) Code. This can be communicated to a reader and used for control purposes. The On−Chip RSSI Code has a 32−level range, represented by a 5−bit number. The On −Chip RSSI Code, in word D0 h−DFh in the Reserved Bank, will be returned as the 5 LSBs of a response to a standard READ command specifying word address Dh. Magnus−S2 must first receive an On −Chip RSSI Request before the On−Chip RSSI Code becomes available. On−Chip RSSI Requests On−Chip RSSI Request is a tool for a reader to specify that it wants to hear only from tags that are seeing a desired amount of received signal strength. It allows a reader to limit its communications only to nearby tags – or conversely, to “mute” nearby tags in order to attempt communication with tags receiving weak signals. The On−Chip RSSI Threshold “address” (A0 h of the User Bank) is used only by Magnus −S2 to interpret a SELECT command and is not an actual memory location. It is sent by the reader using a standard Gen 2 SELECT command. The 6−bits of On −Chip RSSI Threshold Value/Control are communicated as part of the Mask sent to the tags. The list below from the Gen 2 version 2.0.0 spec shows the format of a SELECT command. To send an On−Chip RSSI Request, the reader issues a SELECT command with:

  • MemBank set to 3h (11b)
  • The On−Chip RSSI Threshold address (A0h) in the Pointer field
  • Length set to 00001000b (the On−Chip RSSI request value consists of the lower 6 bits of an 8−bit Mask)
  • The On−Chip RSSI request in the lower 6 bits of the Mask, consisting of a leading bit for control followed by 5 bits for the On−Chip RSSI Code at which the reader wants to define the tags’ response/no−response threshold. The control bit determines whether the threshold value is interpreted by Magnus −S2 as a lower or upper threshold. Specifically, if the control bit is set to 0, it will respond if its internally generated On −Chip RSSI Code is less than or equal to the threshold value. If the control bit is 1, it will respond if its On −Chip RSSI Code is greater than the threshold.

Device UHF Band Attach Material Package Shipping SPS1F001PET FCC 902−928 MHz Non−metal Case 888AB 1000 / Reel SPS2F001PET ETSI 866−868 MHz Non−metal Case 888AC 1000 / Reel

www.onsemi.com PACKAGE DIMENSIONS RF TAG 104.78x19.05MM CASE 888AB ISSUE A DIM D MIN MILLIMETERS 96.90 E 8.52 97.00 8.62 NOM NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. ANTENNA SIZE DETERMINED BY DIMENSIONS D AND E. 4. LABEL SIZE DETERMINED BY DIMENSIONS D1 AND E1. 5. LABEL IS 0.076 THICK PET TAPE. ANTENNA IS 0.009 THICK ALUMINUM. D TOP VIEW D1 104.28 E1 18.55 104.78 19.05 E MAX 97.10 8.72 105.28 19.55 RF TAG 104.5x11.12mm CASE 888AC ISSUE O DIM D MIN MILLIMETERS 101.90 E 8.52 102.10 8.72 MAX NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. ANTENNA SIZE DETERMINED BY DIMENSIONS D AND E. 4. LABEL SIZE DETERMINED BY DIMENSIONS D1 AND E1. 5. LABEL IS 0.076 THICK PET TAPE. ANTENNA IS 0.009 THICK ALUMINUM. D TOP VIEW D1 103.50 E1 10.12 104.50 11.12 E PUBLICATION ORDERING INFORMATION N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 SPSXF001/D Smart Passive Sensor is a trademark of RFMicron, Inc. Magnus−S2 is a registered trademark of RFMicron, Inc. Chameleon is a trademark of RFMicron, Inc. LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries i n the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property . A listing of ON Semiconductor’s product/patent ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, reg ulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the right s of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.