ATA559001-6DSY Atmel, ATA559001-6DSY Datasheet - Page 18

• 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

4.2
4.2.1
18
Status Registers
ATA5590
Status1 Register
ATA5590 has two status registers.
Status1 contains the result of the arbitration procedure (Aloha-based or anticollision and
group-selection status), and status2 contains the communication results.
Status1 is a special register; the contents of the register are persistent for 8 seconds at 25°C
after RF power is lost. The register will be refreshed by the POR mechanism.
Note:
Table 4-1.
Table 4-2.
GENERALLY
Pre-select
ID
ID_s
Temperature
Storage time [s]
• Status1, which represents the selection status and
• Status2, which represents the communication status
• Pre_select: A “1” indicates that the tag was previously selected by a group-selection
• ID: A “1” indicates that the tag has currently won a deterministic arbitration via deterministic
• ID_s: A “1” indicates that the tag, which has won arbitration before, will now be silent because
command. It can be set and reset by group-selection commands. A reset is also possible
using the reset command.
anticollision commands. It can be reset by group-selection commands (group condition is no
longer true) or by the reset command.
it was detected, or, in the case of a deterministic selection procedure, it has received a new
anticollision command. The bit can be reset by the reset command.
The persistence time is a function of the temperature. A common attribute of CMOS technologies
is that the leakage current changes by a factor of 2 for every 9°C. The leakage current is the main
influence on the storage time.
Contents of Status 1 Register
Typical Storage Time of a Logical “1” in Status1 Register at Different
Temperatures
–47°C
2048
Indicates or stores the selection status of the IC (ALOHA, deterministic
anticollision or group select)
“1b” indicates that the reader was detected before by a group select command
“1b” indicates that the tag has won the arbitration (deterministic anticollision)
“1b” indicates that the tag which has won the arbitration and detected before,
shall now be silent (during deterministic- and ALOHA arbitration the flag is set
after detecting and by following of a new arbitration command - ALOHA- or a
deterministic arbitration command).
–29°C
512
–11°C
128
7°C
32
25°C
8
43°C
2
4817C–RFID–03/07
61°C
0.5