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ST25DV64K Scheda tecnica(PDF) 129 Page - STMicroelectronics

Il numero della parte ST25DV64K
Spiegazioni elettronici  Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM,and fast transfer mode capability
PDF  220 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25DV64K Scheda tecnica(HTML) 129 Page - STMicroelectronics

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ST25DV04K ST25DV16K ST25DV64K
RF operations
219
Request parameter:
•
UID (optional)
Response parameter:
•
No parameter
Response parameter:
•
Error code as Error_flag is set:
–
03h: the option is not supported
–
0Fh: error with no information given
7.6.18
Write AFI
On receiving the Write AFI request, the ST25DVxxx programs the 8-bit AFI value to its
memory. 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 write correctly the AFI value into the memory. The Wt
time is equal to t1nom + N × 302 µs (N is an integer).
Table 106. Reset to Ready response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
Response
EOF
-
8 bits
16 bits
-
Table 107. Reset to ready response format when Error_flag is set
Response
SOF
Response_flags
Error code
CRC16
Response
EOF
-
8 bits
8 bits
16 bits
-
Figure 46. Reset to Ready frame exchange between VCD and ST25DVxxx
VCD
SOF
Reset to
Ready
request
EOF
ST25DVxxx
<-t1-> SOF
Reset to
Ready
response
EOF



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