ATA559001-6DSY Atmel, ATA559001-6DSY Datasheet - Page 17

• Manufacturer Part Number: ATA559001-6DSY
• Description: RF Wireless Misc UHF (1k bit r/w anti-collision)
• Manufacturer: Atmel

Specifications of ATA559001-6DSY

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 3-6.
4. Communication
4.1
4817C–RFID–03/07
Notes:
Address
Logical
7
0
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Default Operation Basics
1. Page can be locked (when locked it can't be reprogrammed) - OTP mechanism
2. Whole page usable for expanded ID
Address
Block
User Memory
3
2
1
0
3
2
1
0
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31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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Communication between the reader and the tag is based on the reader talks first (RTF) principle.
When a tag receives modulation ticks from the reader, the stream is checked by several mecha-
nisms. If they all result in a valid status, the tag becomes synchronous to the stream and the tag
is ready to communicate.
Communication always starts with a forward message (reader to tag). ATA5590 supports full
duplex communication during the forward link after becoming synchronous to the reader. There-
fore, the reader can check on-the-fly whether the tags have received the right values.
The tag answers by backscattering a message back to the reader (return link).
The messages are covered by a CRC.
The backscatter mechanism is based on 2PSK modulation, which means that the tag changes
the imaginary part of the input impedance as a function of the data stream and the selected
encoding. This modulation type offers maximum robustness against noise combined with mini-
mum influence on supply voltage generation.
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Byte3
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Byte2
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Byte1
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Byte0
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ATA5590
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17
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