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ST25TV02K 数据表(PDF) 27 Page - STMicroelectronics

部件名 ST25TV02K
功能描述  NFC Type 5 / RFID tag IC with up to 2-Kbit EEPROM, product identification and protection
PDF  90 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST25TV02K 数据表(HTML) 27 Page - STMicroelectronics

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Table 31. response depending on Request_flags
Flags
Address_flag
Select_flag
1
Addressed
0
Non addressed
1
Selected
0
Non selected
ST25TV02K/512 in Ready or Selected state (Devices in Quiet state
do not answer)
-
X
-
X
ST25TV02K/512 in Selected state
-
X
X
-
ST25TV02K/512 in Ready, Quiet or Selected state (the device
which matches the UID)
X
-
-
X
Error (03h) or no response (command dependent)
X
-
X
-
Figure 9. state transition diagram
In RF field
Stay quiet(UID)
Select (UID)
Any other command
Inventory
Out of RF field
after tRF_OFF
Out of RF field
after tRF_OFF
Out of field
after tRF_OFF
Any other command where the
Address_Flag is set AND where
the Inventory_Flag is not set
Any other command
where Select_Flag
is not set
Power off
Quiet
Selected
Ready
1.
The ST25TV02K/512 return to the Power Off state if the tag is out of the field for at least tRF_OFF.
The intention of the state transition method is that only one ST25TV02K/512 should be in the Selected state at a
time.
When the Select_flag is set to 1, the request shall NOT contain a unique ID.
When the address_flag is set to 0, the request shall NOT contain a unique ID.
6.2.3
Modes
The term “mode” refers to the mechanism used in a request to specify the set of ST25TV02K/512 devices that
shall execute the request.
Addressed mode
When the Address_flag is set to 1 (Addressed mode), the request contains the Unique ID (UID) of the addressed
ST25TV02K/512.
ST25TV02K ST25TV512
RF protocol description
DS12074 - Rev 11
page 27/90



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