ATA559001-6DSY Atmel, ATA559001-6DSY Datasheet - Page 75

• 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

10.4
10.4.1
Figure 10-4. Programming Sequence in More Detail
4817C–RFID–03/07
Program Commands
Erase failure
Lock failure
Program failure
Programming Sequence
Header
Header
Header
Header
Command, parameters, address,
Command, parameters, address,
Command, parameters, address,
Command, parameters, address,
data, CRC, EOT
data, CRC, EOT
data, CRC, EOT
data, CRC, EOT
ATA5590 checks the access rules during the forward EOT sequence. The erase phase starts if
programming access is allowed. After the erase, the whole block is programmed. When this step
is finished, ATA5590 backscatters a sub-carrier back to the reader indicating that the program-
ming sequence was successful.
If the program access is forbidden (lock failure), the tag skips the erase and the program cycle,
and backscatters a sub-carrier directly after the EOT sequence of the forward link.
ATA5590 is based on a closed-loop programming time management concept which adjusts the
programming time to the RF conditions (field strength). The time for programming is limited. If
the maximum time is reached, a time-out occurs, and ATA5590 backscatters a sub-carrier.
If the erase or programming cycle fails, the tag backscatters a sub-carrier frequency.
If programming was successful, the sub-carrier frequency is defined by internal frequency / 4;
otherwise, by internal frequency / 8.
Note:
The internal frequency is adjusted by the first header sub-symbol.
Sub
Erase
Erase
Header
Erase
Loop possibility
Program
Status2, data,
Program
CRC
Sub
Sub
Header
Header
Loop possibility
Loop possibility
EOT
Sub
Status2, data,
Status2, data,
Header
CRC
CRC
Loop possibility
Status2, data,
CRC
EOT
EOT
ATA5590
EOT
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