SRT512 datasheet(37/46 Pages) STMICROELECTRONICS

37 / 46 page

SRT512

SRT512 commands

Doc ID 13277 Rev 4

37/46

Unique identifier (UID)

Members of the SRT512 family are uniquely identified by a 64-bit unique identifier (UID).

This is used for addressing each SRT512 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 48):

●

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 1100b = 12d for SRT512

●

a 42-bit unique serial number

Figure 48.

64-bit unique identifier of SRT512

Figure 49.

Get_UID frame exchange between reader and SRT512

8.10

Power-on state

After power-on, the SRT512 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().

AI14080

D0h

Unique Serial Number

02h

Most significant bits

Least significant bits

12d

CRCL CRCH

AI13515b

Reader

SRT512

<-t0-> <-t1->

CRCL CRCH

0Bh

UID

SRT512 Datasheet(PDF) 37 Page - STMicroelectronics

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