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ST25DV64K 数据表(PDF) 133 Page - STMicroelectronics

部件名 ST25DV64K
功能描述  Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM, and fast transfer mode capability
PDF  200 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST25DV64K 数据表(HTML) 133 Page - STMicroelectronics

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Response parameters:
•
No parameter. The response is sent back after the write cycle.
Table 231. Fast Write Message response format when Error_flag is set
Response SOF
Response_flags
Error code
CRC16
Response EOF
-
8 bits
8 bits
16 bits
-
Response parameter:
•
Error code as Error_flag is set:
–
02h: command not recognized
–
03h: command option not supported
–
0Fh: error with no information given
Figure 70. Fast Write Message frame exchange between VCD and ST25DVxxx
SOF
Fast Write
Message
request
VCD
EOF
ST25DVxxx
t1
SOF
Fast Write
Message
response
EOF
SOF
EOF
ST25DVxxx
t1
Write sequence
when error
Fast Write
Message
response
Write sequence
when no error
7.6.42
Fast Read Message Length
On receiving the Fast Read Message Length command, the ST25DV reads the MB_LEN_dyn register which
contains the mailbox message length and sends back its 8-bit value in the response.
The value of MB_LEN_Dyn returned is the (size of the message length in Bytes - 1).
The Option_flag is not supported. The Inventory_flag must be set to 0.
The subcarrier_flag should be set to 0, otherwise the ST25DVxxx answers with an error code.
The data rate of the response is multiplied by 2 compared to Read Message Length command.
Table 232. Fast Read Message Length request format
Request SOF
Request_flags
Fast Read Message Length
IC Mfg code
UID (1)
CRC16
Request EOF
-
8 bits
CBh
02h
64 bits
16 bits
-
1. This field is optional.
Request parameters:
•
Request flag
•
UID (optional)
ST25DV04K ST25DV16K ST25DV64K
RF commands
DS10925 - Rev 9
page 133/200



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