M24SR04-G datasheet(21/90 Pages) STMICROELECTRONICS

tên linh kiện	M24SR04-G

Giải thích chi tiết về linh kiện	Support of NDEF data structure

PDF	90 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

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DocID024754 Rev 15

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M24SR04-Y M24SR04-G

M24SR04 memory management

3.1

Memory structure

The M24SR04 supports the NDEF Tag Application as defined in the NFC Forum Type 4

Tag. The M24SR04 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 M24SR04 device.

The CC file gives some information about the M24SR04 itself and the NDEF file. The NDEF

file contains the User data.

3.1.1

File identifier

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

3.1.2

CC file layout

The CC file gives some information about the M24SR04 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).

Table 3. File identifier

File identifier

Meaning

0xE101

System file

0xE103

CC file

0x0001

NDEF file

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