LRI512 datasheet(36/54 Pages) STMICROELECTRONICS

Part #	LRI512

Description	Memory TAG IC 512 bit High Endurance EEPROM 13.56MHz, ISO 15693 Standard Compliant with E.A.S.

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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LRI512

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LOCK AFI

Command Code = 0x28

When receiving the Lock AFI Request, the LRI512

lock the AFI value permanently. The Option_Flag

is not supported.

During the write cycle tW, no modulation (never

100% nor 10%) shall occur. If so, the LRI512 may

not Lock correctly the AFI value into the memory.

The tW delay is a multiple of t1nominal.

Request parameter (Table 43):

– UID (Optional)

Response parameter (Table 44):

– No parameter.

Response parameter (Table 45):

– Error Code as Error_Flag is set

Table 43. Lock AFI Request Format

Table 44. Lock AFI Response Format when Error Flag is NOT Set

Table 45. Lock AFI Response Format when Error Flag is Set

Figure 40. LOCK AFI Frame Exchange between VCD and LRI512

Request

SOF

Request

Flags

Lock AFI

UID

CRC16

Request

EOF

8 bits

0x28

64 bits

16 bits

Response SOF

Response_Flags

CRC16

Response EOF

8 bits

16 bits

Response SOF

Response_Flags

Error Code

CRC16

Response EOF

8 bits

16 bits

AI06838

VCD

LRI512

t1

EOF

SOF

EOF

SOF

Lock sequence when error

SOF

EOF

t1

tw

Lock AFI

Request

Lock AFI

Response

Lock AFI

Response

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