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LRIS2K 数据表(PDF) 79 Page - STMicroelectronics

部件名 LRIS2K
功能描述  2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and Password, ISO15693 and ISO18000-3 Mode 1 compliant
PDF  102 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LRIS2K 数据表(HTML) 79 Page - STMicroelectronics

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LRIS2K
Lock Password
79/102
38
Lock Password
On receiving the Lock Password command, the LRIS2K sets the access rights and
permanently locks the selected block. The Option_flag is supported.
RFU bit 8 of the request_flag is used to select either the memory area (bit 8 = ‘0’) or the
password area (bit 8 = ‘1’).
During the write cycle tW, there should be no modulation (neither 100% nor 10%) otherwise,
the LRIS2K may not correctly lock the memory block.
The tW time is equal to t1nom + 18 × 302 µs.
Request parameters:
●
(Optional) UID
●
Block number (bit 8 = ‘1’: 00h = Kill, 01h = Pswd1, 02h = Pswd2, 03h = Pswd3, other =
Error)
●
Protect status (refer to Table 73)
Response parameter:
●
No parameter.
Response parameter:
●
Error code as Error_flag is set:
–
10h: block address not available
–
11h: block is locked
–
14: block not locked
Table 72.
Lock Password request format
Request
SOF
Request
_flags
Lock
Password
IC Mfg
code
UID
Block
number
Protect
Status
CRC16
Request
EOF
8 bits
B2h
02h
64 bits
8 bits
8 bits
16 bits
Table 73.
Protect status
b7
b6
b5
b4
b3
b2
b1
b0
0
0
0
password control bits
Read / Write protection
bits
1
Table 74.
Lock Password response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
Response
EOF
8 bits
16 bits
Table 75.
Lock 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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