at88rf020 ATMEL Corporation, at88rf020 Datasheet
at88rf020
Related parts for at88rf020
at88rf020 Summary of contents
Page 1
... This device supports these security features: password checking, data locking, a one- way counter and a guaranteed unique serial number. The AT88RF020 includes an on-chip internal tuning capacitor that enables it to oper- ate with a single external coil antenna. This antenna completes the RFID channel. ...
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... Pseudo Unique PICC Identifier: This PUPI field is a unique serial number permanently written into the device’s nonvolatile memory at the Atmel factory during wafer probe/test. It cannot be modified and is guaranteed to be unique for all AT88RF020 devices. Cus- tomers desiring serial numbers longer than 32 bits are expected to use other locations within the memory, including the Reserved field within Page 1 ...
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... CRC bytes (start/stop bits, SOT, EOT and EGT are ignored). When the last bit of the CRC has been received, the value in the CRC register should be 0x0000. When the device transmits data, the CRC is computed based on all outgoing data bits. AT88RF020 3 ...
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... Anticollision REQB/WUPB Command ATTRIB Command AT88RF020 4 Anticollision is implemented as per ISO 14443-3, Type B (see ISO 14443-3, sections 7.3 and 7.4). There are four primitive commands that support the anticollision scheme: REQB/WUPB, SlotMARKER, ATTRIB and HLTB. This 5-byte command (see ISO 14443-3, section 7.7) is used for the PCD to probe the field for PICCs or to wake up PICCs that are in the HALT state ...
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... CRC bytes. The least significant nibble of the first byte is the slot number, and if this matches the generated random number, then the ATQB response is generated. The chip will truncate the slot number field to match the value of N provided in the REQB command. The most significant nibble of this command is fixed at 0xA. AT88RF020 5 ...
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... Figure 2. AT88RF020 Anticollision and State Transition Flow Chart Wait for REQB AFI Match ? Send ATQB Wait for ATTRIB or HLTB with PUPI match HLTB Send Answer to HLTB HALT State Wait for WUPB with AFI match AT88RF020 6 Power On Reset or WUPB NO YES Select Random Number " ...
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... Page 6 when it is set to a “1”. There is no mechanism to ever “unlock” a page, so once a page is locked, it can never be unlocked and, as such, can never be modified. The 31- bit LockBits field is set to all “0”s upon shipment from the factory. Bit 0 of the LockBits AT88RF020 7 ...
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... CHECK PASSWORD Command DESELECT Command COUNT Command AT88RF020 8 field is ignored for obvious reasons, since it would normally point to memory Page 0, which contains the embedded PUPI (serial number) and the actual LockBits field. A command to lock Page 0 with password access will result in an ACK command being issued with no other effects, since Page 0 can never be locked ...
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... Address 64 bits data Ignored 32 bits ignored, 32 bits data Ignored 64 bits data Ignored Ignored Ignored 16 bits ignored, 48 bits data AT88RF020 Description 64-bit page from memory 64-bit page to memory Data is ORed with existing LockBits value 11th Byte 12th Byte CRC_0 CRC_1 CRC_0 CRC_1 ...
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... Electrical AT88RF020 10 A valid READ command response is a 12-byte frame sent from the PICC to the PCD and is formatted as shown in Table 5. Table 5. PICC Frame Format Commands 1st Byte 2nd Byte READ CID | 0x4 Address Both the ACK and NACK responses consist of a 4-byte frame sent from the PICC to the PCD and are formatted as shown in Table 6 ...
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... Orchard Parkway San Jose, CA 95131 R 2010C–RFID–2/ TITLE 16S2, 16-lead, 0.300" Wide Body, Plastic Gull Wing Small Outline Package (SOIC) AT88RF020 End View COMMON DIMENSIONS (Unit of Measure = inches) SYMBOL MIN NOM MAX A 0.0926 – 0.1043 A1 0.0040 – ...
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... Package Sample Pinout Pad Information Ordering Information Ordering Code AT88RF020-WA1 AT88RF020-MR1 AT88RF020 12 Pin 1 = AC1 Pin 16 = AC2 All other pins should float. The layout of the die is shown in Figure 3 on page 13. The antenna coil contact pads (ac1 and ac2) and the test 5, 6 and 7 pad passivation openings are 90x90 microns. The antenna coil and test 5, 6 and 7 pads are designed to be compatible with current factory production bump mounting processes ...
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... Y= 854.48 µm −776.80 µm X= Test 5 Y= 732.00 µm −776.80 µm X= Test 6 −732.00 µm Y= Test 7 X= 805.84 µm −732.00 µm Y= AT88RF020 Test 7 73.5 mils x 76.9 mils 3.1 mils 3.5 mils X= 7.813 mils Y= 25.411 mils X= 22.890 mils Y= 25.411 mils −4.037 mils X= Y= 33.641 mils −9.279 mils ...
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... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © Atmel Corporation 2006. All rights reserved. Atmel marks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...