AN3408 datasheet(33/38 Pages) STMICROELECTRONICS

tên linh kiện	AN3408

Giải thích chi tiết về linh kiện	The NFC technology allows accessing standard

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AN3408

User application flow charts

Figure 4. Identifying a blank card ISO/IEC 15693 contactless tag

GetSystemInformation is a command defined in IEC/ISO 15693 specification or STM products datasheet.

Information on the contactless tag response of GetSystemInformation command is given in

Table 47.

Start

Send GetSystemInformation command (1)

ICreference = ISO15693 STM

product ?

No : The contactless tag is not a STM product

Yes

AI18891

End

Get memory size information

Table 47. Contactless tag response of GetSystemInformation command

LRI1K

LRI2K

LRIS2K

LRIS64K

M24LR04

E-R

M24LR16

E-R

M24LR64

E-R

M24LR6

4-R

IC reference (1

byte)

0b010000

0b001000

0b001010

010001xx

0x5A

0x4E

0x5E

0x2C

Block size (bytes)

(1)

0x03

Memory size

(bytes) (2)

07FF

0x7F

0x011F

0x071F

07FF

Block size = 0x03 means that the number of bytes of the block is 4 bytes.

The number of blocks of a contactless tag is Memory size value +1.

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