M24LR64-RDW6T2 STMICROELECTRONICS [STMicroelectronics], M24LR64-RDW6T2 Datasheet - Page 101

• Manufacturer Part Number: M24LR64-RDW6T2
• Description: 64 Kbit EEPROM with password protection & dual interface
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M24LR64-R
26.16
Present-sector Password
On receiving the Present-sector Password command, the M24LR64-R 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 comparison cycle equal to W
10%) otherwise, the M24LR64-R the Password value may not be correctly compared.
The W
After a successful command, the access to all the memory blocks linked to the password is
changed as described in
Table 80.
1. Gray means that the field is optional.
Request parameter:
●
●
●
Table 81.
Response parameter:
●
Table 82.
Response parameter:
●
Request
Response
Response
SOF
SOF
SOF
UID (optional)
Password Number (0x01 = Pswd1, 0x02 = Pswd2, 0x03 = Pswd3, other = Error)
Data
No parameter. The response is send back after the write cycle.
Error code as Error_flag is set:
–
–
–
–
t
time is equal to t
Request
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
_flags
8 bits
Present-sector Password request format
Present-sector Password response format when Error_flag is NOT set
Present-sector Password response format when Error_flag is set
Response_
Response_flags
flags
8 bits
Password
Present-
sector
B3h
8 bits
1nom
Section 4.1: M24LR64-R RF block
code
+ 18 × 302 µs.
Doc ID 15170 Rev 10
Mfg
02h
Error code
IC
8 bits
t
, there should be no modulation (neither 100% nor
64 bits
UID
(1)
Password
CRC16
16 bits
number
8 bits
CRC16
16 bits
security.
32 bits
Data
Commands codes
CRC16
16 bits
Response
Response
EOF
Request
EOF
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EOF