AT88RF256-13-EK Atmel, AT88RF256-13-EK Datasheet
AT88RF256-13-EK
Specifications of AT88RF256-13-EK
Related parts for AT88RF256-13-EK
AT88RF256-13-EK Summary of contents
Page 1
... Kbits/sec. The IC includes an internal tuning capacitor – only an external coil antenna is required to form a complete tag. Figure 1. Block Diagram Rectifier Figure 2. Typical Operating Configuration External Coil RF Power Data Bridge Regulator Clock Control Extraction Data Modulation L2 AT88RF256-13 L1 13.56 MHz RFID Transponder IC AT88RF256-13 EEPROM Rev. 1944E–RFID–03/02 1 ...
Page 2
... Data Communications section) must not start within the first and/or last bit-time of the listening window. This restriction is enforced to prevent the IC receiver from see- ing its own modulation. AT88RF256- Start of Transmission (see Data Communications section) - Between 4 and 19 bytes from the EEPROM, which is defined as the ID field ...
Page 3
... IC. If either an illegal code or improper encoding is detected, the command is aborted. which must also be correct (see below for details). been previously executed since the last power cycle in order for the Write Lock command to be executed. AT88RF256-13 3 ...
Page 4
... Chip Disable command to the tag during the first listen- ing window after the ID transmission. Until the power is removed, that tag no longer sends its ID frame. See the Anticollision Procedures for the AT88RF256-13 Application Note for additional information on utilizing the anticollision features of the IC. Data Communications The electrical signaling of the IC is configurable using configuration bits as in Table 4, page 12. Options exist to allow compatibility with ISO/IEC 14443-2, “ ...
Page 5
... The DATA_ENCODE bit determines the outgoing (IC to reader/writer) data encoding format. Section 5 of ISO 14443 states that the reader shall talk first. The AT88RF256-13 talks first. Section 9.2.5 of ISO 14443 defines Tr0 and Tr1. These signals are as stated and are not compliant ...
Page 6
... N data bytes – logic “0” start bit + 8 data bits + 1 logic “1” stop bit + 1 EGT 3. (Optional) Two CRC bytes in the same format as (2) above 4. End of Transmission (EOT) Note: Figure 4. Type B Frame Format (IC to Reader/Writer) SOT AT88RF256-13 6 (1) EGT ) N ≥ 0 EGT (Extra Guard Time integer 0– ...
Page 7
... DATA_ENCODE option is set to BPSK-NRZ-L. There will be no phase change of the subcarrier between the end of the SOT and the start bit “0” if the DATA_ENCODE option is set to BPSK-Miller. See Figure 5. transmitted for 10 bit-times. transmitted for 2 bit-times. AT88RF256-13 7 ...
Page 8
... The response to the Check Password command will be a new framed transmission of the ID field (see page 2). If there is an error of one sort or another with either of these commands, the IC will also start a new framed transmission of the ID field. AT88RF256- bit-times . . . ...
Page 9
... A drawing of the IC is shown on the next page. Ordering Information Ordering Code AT88RF256-13-WBC-10 AT88RF256-13-WC-10 AT88RF256-13-WBC-30 AT88RF256-13-WC-30 1944E–RFID–03/02 EOT Last Char. 12 bit-times Package Bumped Wafer, 10pf Die on Wafer Bumped Water Die on Wafer AT88RF256-13 SOT Operation Range Commercial (0°C to 70°C) 9 ...
Page 10
... Figure 8. AT88RF256-13 Die AT88RF256-13 10 ac1 AT29622 .0669" x .0559" ac2 Overall Die Size: 1.611 mm x 1.331 mm (Center to Center) 1.700 mm x 1.420 mm Pad Size: 80 µm Pad Location −630.40 µm ac2 X= −209.96 µm Y= −728.48 µm ac1 X= Y= 491.24 µm Test 1 X= 740.45 µm Y= 595.30 µm ...
Page 11
... User Data User Data OPTIONS OPTIONS Second Byte Password Third Byte Password Name Number of Bits Default Value LOCK[0: AT88RF256-13 Byte 3 Fourth ID Byte Eighth ID Byte/User Data ID/User Data ID/User Data User Data User Data User Data User Data Reserved Fourth Byte Password Description If “ ...
Page 12
... After sucessfully writing the configuration page, the IC will continuously transmit the contents of page 8. The changes in configuration will not take effect until the IC is reset by powering it down or by sending an invalid command to the IC. Table 5. Configuration Page Example AT88RF256-13 12 Description Number of ID bytes after first four. Total ID size range: 4–19 bytes. ...
Page 13
... Orchard Parkway San Jose, CA 95131 R 1944E–RFID–03/ TITLE 14S1, 14-lead, 0.150" Wide Body, Plastic Gull Wing Small Outline Package (SOIC) AT88RF256- End View COMMON DIMENSIONS (Unit of Measure = inches) MIN MAX SYMBOL NOM NOTE A 0.0532 – ...
Page 14
... L1 is connected to pin 10 connected to pin 11. All the remaining pins should float. Engineering samples come with tuning capacitor additional capacitance is added (including parasitics), a 4.54 µH nominal antenna inductance should be used. The antenna should be tuned to 13.56 MHz for maximum performance. AT88RF256-13 14 1944E–RFID–03/02 ...
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... No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. ...