m24lr64-r STMicroelectronics, m24lr64-r Datasheet - Page 94

• Manufacturer Part Number: m24lr64-r
• Description: 64 Kbit Eeprom With Password Protection & Dual Interface 400 Khz I?c Serial Bus & Iso 15693 Rf Protocol At 13.56 Mhz
• Manufacturer: STMicroelectronics

Commands codes
26.13
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Get Multiple Block Security Status
When receiving the Get Multiple Block Security Status command, the M24LR64-R sends
back the sector security status. The blocks are numbered from '00h to '07FFh' in the request
and the value is minus one (–1) in the field. For example, a value of '06' in the “Number of
blocks” field requests to return the security status of 7 blocks.
The Protocol_extention_flag should be set to 1 for the M24LR64-R to operate correctly. If
the Protocol_extention_flag is at 0, the M24LR64-R answers with an error code.
During the M24LR64-R response, if the internal block address counter reaches 07FFh, it
rolls over to 0000h and the Sector Security Status bytes for that location are sent back to the
reader.
Table 69.
1. Gray means that the field is optional.
Request parameter:
●
●
●
Table 70.
1. Repeated as needed.
Response parameters:
●
Table 71.
Request
Response
Reserved for future use. All
SOF
SOF
b
UID (optional)
First block number
Number of blocks
Sector security status (see
7
Request
_flags
8 bits
at 0
Get Multiple Block Security Status request format
Get Multiple Block Security Status response format when Error_flag is
NOT set
Sector security status
b
Response_
6
8 bits
flags
Security
Multiple
Status
Block
2Ch
Get
b
5
password control
Sector security
Doc ID 15170 Rev 9
b
4
Table 71: Sector security
8 bits
status
bits
(1)
64 bits
UID
b
3
(1)
protection bits
Read / Write
b
2
number
16 bits
b
block
status)
First
1
CRC16
16 bits
0: Current sector not locked
1: Current sector locked
of blocks
Number
16 bits
CRC16
16 bits
b
0
M24LR64-R
Response
Request
EOF
EOF