M24SR Ver la hoja de datos (PDF) - STMicroelectronics

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M24SR

Dynamic NFC/RFID tag IC with 2-Kbit EEPROM, NFC Forum Type 4 Tag and I²C interface

STMicroelectronics 

M24SR02-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 M24SR02-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 M24SR02-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 M24SR02-Y: C-APDU

M24SR02-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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