M24SR 데이터 시트보기 (PDF) - STMicroelectronics
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M24SR
STMicroelectronics
M24SR Datasheet PDF : 90 Pages
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M24SR02-Y
M24SR02-Y memory management
File offset
0x0000
0x0004
...
...
...
0x00FC
Table 5. NDEF file layout
Byte 0
Byte 1
NDEF message length
User data
...
...
...
User data
...
...
...
...
...
Byte 2
User data
User data
...
...
...
...
Byte 3
User data
User data
...
...
...
User data
3.1.4
System file layout
The system file specifies the configuration of the M24SR02-Y. Table 6 lists the different
fields.
Table 6. Field list
File offset
Field name
Number of
bytes
Read access
Write access
Delivery state (1)
0x0000
Length system file
2
0x0002
I²C protec
1
0x0003
I²C watchdog
1
0x0004
GPO
1
0x0005
ST reserved
1
0x0006
RF enable
1
0x0007
NDEF File
number (RFU)
1
I²C or RF
I²C or RF
I²C or RF
I²C or RF
I²C or RF
I²C or RF
I²C or RF
-
I²C (2)
I²C (2)
I²C (2)
I²C (2)
I²C (2)
none
0x0012
0x01
0x00
0x11
0x00
0x xxxx xxx1(3)
0x00
0x0008
0x000F
0x0011
UID
Memory Size
Product Code
0x0282 xx xx xx xx
7
I²C or RF
none
xxor 0x028A xx xx xx
xx xx(4) (5)
2
I²C or RF
none
1
I²C or RF
none
0x00FF
0x82 or 0x8A(5)
1. The delivery state for all passwords = 0x00000000000000000000000000000000.
2. The access is granted when the field I²C protect is set to the state Unprotected or when the right I²C
password was correctly received (see Section 3.5: I2C password).
3. Refer Table 11.
4. x values are defined by ST to insure UID unicity.
5. Automotive grade
DocID025386 Rev 10
23/90
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