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ST25DV04K Folha de dados(PDF) 100 Page - STMicroelectronics

Nome de Peças ST25DV04K
Descrição Electrónicos  Dynamic NFC/RFID tag IC with 4-, 16-, or 64-Kbit EEPROM, and fast transfer mode capability
PDF  197 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25DV04K Folha de dados(HTML) 100 Page - STMicroelectronics

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Figure 47. Write AFI frame exchange between VCD and ST25DVxxx
SOF
Write AFI
request
VCD
EOF
ST25DVxxx
t1
SOF
Write AFI
response
EOF
SOF
EOF
ST25DVxxx
Wt
Write sequence
when error
Write AFI
response
7.6.19
Lock AFI
On receiving the Lock AFI request, the ST25DVxxx locks the AFI value permanently. When the Option_flag is set,
wait for EOF to respond.
The Inventory_flag must be set to 0.
During the RF write cycle Wt, there should be no modulation (neither 100% nor 10%), otherwise the ST25DVxxx
may not lock correctly the AFI value in memory. The Wt time is equal to t1nom + N × 302 µs (N is an integer).
Table 148. Lock AFI request format
Request SOF
Request_flags
Lock AFI
UID (1)
CRC16
Request EOF
-
8 bits
28h
64 bits
16 bits
-
1. This field is optional.
Request parameter:
•
Request Flags
•
UID (optional)
Table 149. Lock AFI response format when Error_flag is NOT set
Response SOF
Response_flags
CRC16
Response EOF
-
8 bits
16 bits
-
Response parameter:
•
No parameter
Table 150. Lock AFI response format when Error_flag is set
Response SOF
Response_flags
Error code
CRC16
Response EOF
-
8 bits
8 bits
16 bits
-
Response parameter:
ST25DV04K ST25DV16K ST25DV64K
RF commands
DS10925 - Rev 11
page 100/197



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