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ST25DV04K Datasheet(PDF) 89 Page - STMicroelectronics

No. de pieza ST25DV04K
Descripción 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 Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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ST25DV04K Datasheet(HTML) 89 Page - STMicroelectronics

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Response parameter:
•
Error code as Error_flag is set
–
03h: command option not supported
–
10h: block not available
–
11h: the specified block is already locked and thus cannot be locked again
–
14h: the specified block was not successfully locked
Figure 39. Lock Block frame exchange between VCD and ST25DVxxx
SOF
Lock Block
request
VCD
EOF
ST25DVxxx
t1
SOF
Lock Block
response
EOF
SOF
Lock Block
response
EOF
ST25DVxxx
Wt
Lock sequence
when error
7.6.11
Extended Lock block
On receiving the extended Lock block request, the ST25DVxxx locks the single block value permanently and
protects its content against new writing.
This command is only applicable for the blocks 0 and 1 which may include a CC file.
For a global protection of a area, update accordingly the AiSS bits in the system area. 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 single block value in memory. The Wt time is equal to t1nom + N × 302 µs (N is an
integer).
Table 122. Extended Lock block request format
Request SOF
Request_flags
Extended Lock block
UID (1)
block number
CRC16
Request EOF
-
8 bits
32h
64 bits
16 bits
16 bits
-
1. The field is optional.
Request parameter:
•
Request Flags
•
UID (optional)
•
Only block numbers 0 and 1 are allowed to protect the CCFile in case of NDEF (from LSB byte to MSB
byte)
Table 123. Extended Lock block response format when Error_flag is NOT set
Response SOF
Response_flags
CRC16
Response EOF
-
8 bits
16 bits
-
ST25DV04K ST25DV16K ST25DV64K
RF commands
DS10925 - Rev 11
page 89/197



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