M24SR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M24SR

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

STMicroelectronics 

M24SR02-Y memory management

M24SR02-Y

3.1.3

File offset

Table 4. CC file layout for 1 NDEF file

Meaning

Value

0x0000

0x0002

0x0003

0x0005

0x0007

0x0008

0x0009

0x000B

Number of bytes of CC file

Mapping version(1)

0x000F

0x20 or 0x10

Maximum number of bytes that can be read 0x00F6

Maximum number of bytes that can be written 0x00F6

0x04 (2)

0x06

NDEF file control TLV

0x0001

0x0100

0x000D

0x000E

1. According to the reader.

2. Delivery state.

0x00 (2)

0x00 (2)

Comments

15 bytes

V 2.0 or V 1.0

246 bytes

246 bytes

T field

L field

FileID

Maximum NDEF

file size

Read access

Write access

NDEF file layout

The NDEF file contains the NDEF message which contains the User data. The RF host or

the I²C host can read and write data inside the file. The first two bytes named NDEF

Message Length define the size of the NDEF message. The NDEF Message Length shall

be managed by the application and the M24SR02-Y device does not check if its value is

relevant vs the data written by the RF or I²C host. The M24SR02-Y device uses the NDEF

Message Length, e. g. the standard read can be processed only inside the NDEF message;

otherwise, the M24SR02-Y device returns an error code. For more details about the read

command, refer to Section 5.6.7: ReadBinary command.

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DocID025386 Rev 10

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