M24SR Просмотр технического описания (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

M24SR02-Y memory management

3

M24SR02-Y memory management

3.1

3.1.1

3.1.2

Memory structure

The M24SR02-Y supports the NDEF Tag Application as defined in the NFC Forum Type 4

Tag. The M24SR02-Y is composed of three files:

• One Capability Container file

• One NDEF file

• One System file: this is an ST-proprietary file

The System file contains some information on the configuration of the M24SR02-Y device.

The CC file gives some information about the M24SR02-Y itself and the NDEF file. The

NDEF file contains the User data.

File identifier

The file identifier is the value used in the Select command to select a file.

File identifier

0xE101

0xE103

0x0001

Table 3. File identifier

Meaning

System file

CC file

NDEF file

CC file layout

The CC file gives some information about the M24SR02-Y and the NDEF file. This file is a

read-only file for the RF or I²C host and cannot be modified by issuing a write command.

The T field, Read Access and Write Access fields can be changed by the RF or I²C host by

issuing a specific process (refer to Section 8: Functional procedures).

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