LRI512 datasheet(32/54 Pages) STMICROELECTRONICS

Part #	LRI512

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

PDF	54 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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32 / 54 page

LRI512

32/54

LOCK BLOCK

Command Code = 0x22

When receiving the Lock Block Command, the

LRI512 lock permanently the requested block. 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 memory block. The tW delay

is a multiple of t1nominal.

Request parameter (Table 31):

– (Optional) UID

– Block Number

Response parameter (Table 32):

– No parameter.

Response parameter (Table 33):

– Error Code as Error_Flag is set

Table 31. Lock Single Block Request Format

Table 32. Lock Block Response Format when Error Flag is NOT Set

Table 33. Lock Block Response Format when Error Flag is Set

Figure 36. LOCK Block Frame Exchange between VCD and LRI512

Request

SOF

Request

Flags

Lock Block

UID

Block

Number

CRC16

Request

EOF

8 bits

0x22

64 bits

8 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

AI06834

VCD

LRI512

EOF

SOF

EOF

SOF

Lock sequence when error

SOF

EOF

Lock Block

Request

Lock Block

Response

Lock Block

Response

LRI512 Datasheet(PDF) 32 Page - STMicroelectronics

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