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M24SR02-Y датащи(PDF) 60 Page - STMicroelectronics

номер детали M24SR02-Y
подробное описание детали  Dynamic NFC/RFID tag IC with 2-Kbit EEPROM, NFC Forum Type 4 Tag and I²C interface
PDF  90 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M24SR02-Y датащи(HTML) 60 Page - STMicroelectronics

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I2C device operation
M24SR02-Y
60/90
DocID025386 Rev 10
7.9
I²C frame format
The I2C frame is composed of three fields:
1.
SOD field: contains the device select and the PCB. The PCB field is detailed in
Section 5.2.
2.
Payload field: contains the command and its parameter, as defined in the I2C command
set.
3.
EOD field: contains the two CRC bytes computed on the SOD but excluding the device
select byte field.
Table 69 shows the format of an I2C frame.
7.9.1
Example of I²C frame commands
NDEF Tag Application command
This example presents the I2C frame of an NDEF Tag Application Select command. The I2C
frame is detailed in Table 70.
Before sending a new command, the I2C host can send an I2C frame to read the M24SR02-
Y answer to the NDEF tag Application Select command.
Table 69. I2C frame format
I2C frame
SOD
Payload
EOD
0xAC or 0xAD
1 byte
1 to 251 bytes
2 bytes
Device select
0xAC: to send a request to the M24SR02-Y
0xAD: to read a response of the M24SR02-Y
PCB field
I2C command or I2C answer
2 CRC bytes
Table 70. I2C host to M24SR02-Y
Field
SOD
Payload
EOD
Value
0xAC
0x02 or 0x03
Command field
35 C0 or DF BE
Device select
PCB field
0x00 A4 04 00 07 D2 76 00 00 85 01 01 00
2 CRC bytes



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