LRI2K_08 datasheet(57/89 Pages) STMICROELECTRONICS

Part #	LRI2K

Description	2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant

PDF	89 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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57 / 89 page

LRI2K

Commands codes

57/89

20.9

Write AFI

On receiving the Write AFI request, the LRI2K writes the AFI byte value into its memory. The

Option_flag is supported.

During the write cycle tW, there should be no modulation (neither 100% nor 10%).

Otherwise, the LRI2K may not write correctly the AFI value into the memory. The tW time is

equal to t1nom + 18 × 302µs.

Request parameters:

●

UID (Optional)

●

AFI

Response parameter:

●

No parameter.

Response parameter:

●

Error code as Error_flag is set:

–

12h: block is locked

–

13h: block not programmed

Table 44.

Write AFI request format

Request

SOF

Request

_flags

Write AFI

UID

AFI

CRC16

Request

EOF

8 bits

27h

64 bits

8 bits

16 bits

Table 45.

Write AFI response format when Error_flag is NOT set

Response SOF

Response_flags

CRC16

Response EOF

8 bits

16 bits

Table 46.

Write AFI response format when Error_flag is set

Response SOF

Response_flags

Error code

CRC16

Response EOF

8 bits

16 bits

Figure 48.

Write AFI frame exchange between VCD and LRI2K

VCD

SOF

Write AFI

request

EOF

LRI2

<-t1->

SOF

Write AFI

response

EOF

Write sequence when

error

LRI2

<------------ tW ------------><- t1 -> SOF

Write AFI

response

EOF

LRI2K Datasheet(PDF) 57 Page - STMicroelectronics

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