SRI4K_11 datasheet(37/46 Pages) STMICROELECTRONICS

Part #	SRI4K

Description	13.56 MHz short-range contactless memory chip with 4096-bit EEPROM and anticollision functions

PDF	46 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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37 / 46 page

SRI4K

SRI4K commands

Doc 11605 Rev 5

37/46

Unique identifier (UID)

Members of the SRI4K family are uniquely identified by a 64-bit unique identifier (UID). This

is used for addressing each SRI4K device uniquely after the anticollision loop. The UID

complies with ISO/IEC 15963 and ISO/IEC 7816-6. It is a read-only code, and comprises

(as summarized in Figure 49):

●

an 8-bit prefix, with the most significant bits set to D0h

●

an 8-bit IC manufacturer code (ISO/IEC 7816-6/AM1) set to 02h (for

STMicroelectronics)

●

a 6-bit IC code set to 00 0111b = 7d for SRI4K

●

a 42-bit unique serial number

Figure 49.

64-bit unique identifier of the SRI4K

Figure 50.

Get_UID frame exchange between reader and SRI4K

8.10

Power-on state

After power-on, the SRI4K is in the following state:

●

It is in the low-power state.

●

It is in Ready state.

●

It shows highest impedance with respect to the reader antenna field.

●

It will not respond to any command except Initiate().

AI14081

D0h

Unique Serial Number

02h

Most significant bits

Least significant bits

CRCL CRCH

AI10892b

Reader

SRI4K

<-t0-><-t1->

CRCL CRCH

0Bh

UID

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