LRI512 Просмотр технического описания (PDF) - STMicroelectronics

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производитель

LRI512

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

STMicroelectronics 

LRI512

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.

Table 43. Lock AFI Request Format

Request

SOF

Request

Flags

Lock AFI

8 bits

0x28

Request parameter (Table 43):

– UID (Optional)

Response parameter (Table 44):

– No parameter.

Response parameter (Table 45):

– Error Code as Error_Flag is set

UID

64 bits

CRC16

16 bits

Request

EOF

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

Response SOF

Response_Flags

CRC16

8 bits

16 bits

Response EOF

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

Response SOF Response_Flags

Error Code

CRC16

8 bits

8 bits

16 bits

Response EOF

Figure 40. LOCK AFI Frame Exchange between VCD and LRI512

VCD

LRI512

LRI512

SOF

Lock AFI

Request

EOF

SOF

t1

Lock AFI

Response

EOF Lock sequence when error

SOF

Lock AFI

EOF

tw

t1

Response

AI06838

36/54

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