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LRI64 Datenblatt(PDF) 14 Page - STMicroelectronics

Teilenummer LRI64
Bauteilbeschribung  Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO15693 and ISO18000-3 Mode 1 Compliant
PDF  38 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LRI64 Datenblatt(HTML) 14 Page - STMicroelectronics

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LRI64 STATES
A LRI64 can be in any one of three states:
–
Power-off
–
Ready
–
Quiet
Transitions between these states are as specified
in Figure 20.
Power-off State
The LRI64 is in the Power-off state when it re-
ceives insufficient energy from the VCD.
Ready State
The LRI64 is in the Ready state when it receives
enough energy from the VCD. It answers to any
Request
in
Addressed
and
Non-addressed
modes.
Quiet State
When in the Quiet State, the LRI64 answers to any
Request in Addressed mode.
MODES
The term mode refers to the mechanism for spec-
ifying, in a Request, the set of LRI64 devices that
shall answer to the Request.
Addressed Mode
When the Address_flag is set to 1 (Addressed
mode), the Request contains the Unique ID (UID)
of the addressed LRI64 device (such as an LRI64
device). Any LRI64 receiving a Request in which
the Address_flag is set to 1, compares the re-
ceived Unique ID to its own UID. If it matches, it
execute the Request (if possible) and returns a
Response to the VCD, as specified by the com-
mand description. If it does not match, the LRI64
device remains silent.
Non-Addressed Mode (General Request)
When the Address_flag is set to 0 (Non-addressed
mode), the Request does not contain a Unique ID
field. Any LRI64 device receiving a Request in
which the Address_flag is set to 0, executes the
Request and returns a Response to the VCD as
specified by the command description.
Figure 20. LRI64 State Transition Diagram
AI09723
Power Off
In field
Out of
field
Write, Read, Get_System_Info
in addressed mode
Stay quiet(UID)
Out of
field
Inventory (if UID written)
Write, Read, Get_System_Info
in addressed and
non-addressed modes
Ready
Quiet



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