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ST25TV02K Folha de dados(PDF) 65 Page - STMicroelectronics

Nome de Peças ST25TV02K
Descrição Electrónicos  NFC Type 5 / RFID tag IC with up to 2-Kbit EEPROM, product identification and protection
PDF  90 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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ST25TV02K Folha de dados(HTML) 65 Page - STMicroelectronics

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•
Request flags
•
Fast initiate command code
Table 134. Fast initiate response format when Error_flag is NOT set
Response SOF
Response_flags
DSFID
UID
CRC16 request
EOF
-
8 bits
8 bits
64 bits
16 bits
-
Response parameter:
•
DSFID
•
Unique ID
6.4.35
Inventory Initiated
Before receiving Inventory Initiated command, the ST25TV02K/512 must have received an Initiate or a Fast
Initiate command in order to set the Initiate_flag. If not, the ST25TV02K/512 do not answer to the Inventory
Initiated command.
On receiving the Inventory Initiated request, the ST25TV02K/512 run the anticollision sequence.
The Inventory_flag must be set to 1.
The ST25TV02K/512 do not generate any answer if an error occurs.
The request contains:
Table 135. Inventory Initiated request format
Request SOF Request_flags
Inventory
Initiated
IC Mfg code AFI (1) Mask length Mask value CRC16 request EOF
-
8 bits
D1h
02h
8 bits
8 bits
0 -64 bits
16 bits
-
1. The field is optional.
Request parameters:
•
Request flags
•
Inventory Initiated command code
•
AFI if the AFI flag is set
•
Mask length
•
Mask value
Table 136. Inventory Initiated response format when Error_flag is NOT set
Response SOF
Response_flags
DSFID
UID
CRC16 request
EOF
-
8 bits
8 bits
64 bits
16 bits
-
Response parameter:
•
DSFID
•
Unique ID
During an Inventory process, if the VCD does not receive an RF ST25TV response, it waits t3 time before sending
an EOF to switch to the next slot. t3 starts from the rising edge of the request EOF sent by the VCD.
•
If the VCD sends a 100% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3 μs) + tSOF
•
If the VCD sends a 10% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3 μs) + tNRT
where:
ST25TV02K ST25TV512
RF commands
DS12074 - Rev 11
page 65/90



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