DocID018867 Rev 4

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AN3408

User application flow charts

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

1.

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

xx

0b001000

xx

0b001010

xx

010001xx

b

0x5A

0x4E

0x5E

0x2C

Block size (bytes)

(1)

0x

03

0x

03

0x

03

0x

03

0x03

0x03

0x03

0x

03

Memory size

0x

1F

0x

3F

0x

3F

0x

07FF

0x7F

0x011F

0x071F

0x

07FF

1.

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

2.

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