LRIS64K Datasheet, PDF (81/100 Pages) STMicroelectronics – 64 Kbit EEPROM tag IC at 13.56 MHz with 64-bit UID and password based on ISO/IEC 15693 and ISO/IEC 18000-3 Mode 1

LRIS64K
Commands codes
24.16
Present-sector Password
On receiving the Present-sector Password command, the LRIS64K compares the requested
password with the data contained in the request and reports whether the operation has
been successful in the response. The Option_flag is supported.
During the W_t comparison cycle time, there should be no modulation (neither 100% nor
10%) otherwise, the LRIS64K Password value may not be correctly compared.
The W_t time is equal to t_1nom + 18 × 302 µs.
After a successful command, the access to all the memory blocks linked to the password is
changed as described in Section 3.1: LRIS64K RF block security.
Table 74. Present-sector Password request format
Request
SOF
Request
_flags
Present-
sector
Password
IC
Mfg
code
UID⁽¹⁾
Password
number
8 bits
B3h 02h
64 bits
8 bits
1. Gray means that the field is optional.
Data
32 bits
CRC16
Request
EOF
16 bits
Request parameter:
● UID (optional)
● Password Number (0x01 = Pswd1, 0x02 = Pswd2, 0x03 = Pswd3, other = Error)
● Data
Table 75. Present-sector Password response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
Response
EOF
8 bits
16 bits
Response parameter:
● No parameter. The response is send back after the writing cycle
Table 76. Present-sector Password response format when Error_flag is set
Response Response_
SOF
flags
Error code
CRC16
Response
EOF
8 bits
8 bits
16 bits
Response parameter:
● Error code as Error_flag is set:
– 02h: the command is not recognized, for example: a format error occurred
– 03h: the option is not supported
– 0Fh: error with no information given
– 10h: the specified block is not available
Doc ID 15336 Rev 11
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