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ST25DV04K bảng dữ liệu(PDF) 114 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM, and fast transfer mode capability
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ST25DV04K bảng dữ liệu(HTML) 114 Page - STMicroelectronics

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7.6.26
Read Configuration
On receiving the Read Configuration command, the ST25DVxxx reads the static system configuration register at
the Pointer address and sends back its 8-bit value in the response.
The Option_flag is not supported. The Inventory_flag must be set to 0.
Table 181. Read Configuration request format
Request SOF
Request_flags
Read Configuration
IC Mfg code
UID (1)
Pointer
CRC16
Request EOF
-
8 bits
A0h
02h
64 bits
8 bits
16 bits
-
1. This field is optional.
Note:
Please refer to Table 11. System configuration memory map for details on register addresses.
Request parameters:
•
System configuration register pointer
•
UID (optional)
Table 182. Read Configuration response format when Error_flag is NOT set
Response SOF
Response_flags
Register value
CRC16
Response EOF
-
8 bits
8 bits
16 bits
-
Response parameters:
•
One byte of data: system configuration register
Table 183. Read Configuration 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: the option is not supported
–
10h: block not available
–
0Fh: error with no information given
Figure 55. Read Configuration frame exchange between VCD and ST25DVxxx
SOF
Read
Configuration
request
VCD
ST25DVxxx
EOF
SOF
Read
Configuration
response
EOF
t1
ST25DV04K ST25DV16K ST25DV64K
RF commands
DS10925 - Rev 9
page 114/200



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