M24SR16-Y Datasheet, PDF (31/89 Pages) STMicroelectronics – Support of NDEF data structure

M24SR16-Y
I²C and RF command sets
Table 14. RF and I²C command sets (continued)
Family
command set
Command name
Class Instruction
byte
code
Brief description
ST Proprietary EnablePermanentState
ST Proprietary ExtendedReadBinary
0xA2
0xA2
0x28
0xB0
Enables the Read Only or
Write Only security state
Read data from file
5.1
Note:
5.2
Structure of the command sets
The exchange of data between the RF or the I²C host and the M24SR16-Y uses three kinds
of data formats, called blocks:
• I-Block: to exchange the command and the response
• R-Block: to exchange positive or negative acknowledgment
• S-Block: to use either the Deselect command or the Frame Waiting eXtension (WTX)
command or response
max WTX value = 0x0B
This section describes the structure of the I-Block, R-block and S-Block. This format is used
for the application command set.
I-Block format
The I-Block is used to exchange data between the RF or the I²C host and the M24SR16-Y.
It is composed of three fields. Table 15 details the I-Block format.
Name
Table 15. I-Block format
SoD
Payload
PCB
DID
0
Length
1 byte
PCB field
DID field (optional)
RF or I²C host to M24SR16-Y: C-APDU
M24SR16-Y to RF or I²C host: R-APDU
2 CRC bytes
1 byte
1 to 251 bytes
EoD
CRC
2 bytes
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