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M24LR04E-R Datasheet(PDF) 98 Page - STMicroelectronics

Part # M24LR04E-R
Description  4-Kbit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz
PDF  142 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M24LR04E-R Datasheet(HTML) 98 Page - STMicroelectronics

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Command codes
M24LR04E-R
98/142
Doc ID 022208 Rev 5
26.12
Get System Info
When receiving the Get System Info command, the M24LR04E-R sends back its information
data in the response.The Option_flag is not supported. The Get System Info can be issued
in both Addressed and Non Addressed modes.
The Protocol_extension_flag must be set to 0. Table 70 shows the M24LR04E-R response
to the Get System Info command depending on the value of the Protocol_extension_flag.
Request parameter:
●
Request flags
●
UID (optional)
Response parameters:
●
Information flags set to 0Fh. DSFID, AFI, Memory Size and IC reference fields are
present.
●
UID code on 64 bits
●
DSFID value
●
AFI value
●
Memory size. The M24LR04E-R provides 128 blocks (7Fh) of 4 bytes (03h)
●
IC reference: the 8 bits are significant.
Response parameter:
●
Error code as Error_flag is set:
–
03h: Option not supported
Table 69.
Get System Info request format
Request
SOF
Request
_flags
Get System
Info
UID(1)
1.
Gray means that the field is optional.
CRC16
Request
EOF
8 bits
2Bh
64 bits
16 bits
Table 70.
Get System Info response format when Protocol_extension_flag = 0 and
Error_flag is NOT set
Response
SOF
Response
_flags
Information
flags
UID
DSFID
AFI
Memory
size
IC
ref.
CRC
16
Response
EOF
00h
0Fh
64
bits
8 bits
8 bits
037F
5A
16
bits
Table 71.
Get System Info response format when Error_flag is set
Response
SOF
Response_flags
Error code
CRC16
Response
EOF
01h
8 bits
16 bits



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