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LRIS2K bảng dữ liệu(PDF) 81 Page - STMicroelectronics

tên linh kiện LRIS2K
Giải thích chi tiết về linh kiện  2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and Password, ISO15693 and ISO18000-3 Mode 1 compliant
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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LRIS2K bảng dữ liệu(HTML) 81 Page - STMicroelectronics

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LRIS2K
Present Password
81/102
39
Present Password
On receiving the Present Password command, the LRIS2K compares the requested
password with the data contained in the request and reports whether the operation has
been successful in the request. The Option_flag is supported.
During the comparison cycle equal to tW, there should be no modulation (neither 100% nor
10%) otherwise, the LRIS2K the Password value may not be correctly compared.
The tW time is equal to t1nom + 18 × 302 µs.
After a successful command, the access to all the memory blocks linked to the password is
changed as described in Section 2: LRIS2K block security.
Request parameters:
●
UID (optional)
●
Password number (0x01 = Pswd1, 0x02 = Pswd2, 0x03 = Pswd3, other = Error)
●
Data
Response parameter:
●
No parameter. The response is send back after the writing cycle
Response parameter:
●
Error code as Error_flag is set:
–
0Fh: other error
Table 76.
Present Password request format
Request
SOF
Request
_flags
Present
Password
IC
Mfg
code
UID
Password
number
Data
CRC16
Request
EOF
8 bits
B3h
02h
64 bits
8 bits
32 bits
16 bits
Table 77.
Present Password response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
Response
EOF
8 bits
16 bits
Table 78.
Present Password response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
Response
EOF
8 bits
8 bits
16 bits



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