LRIS2K_08 datasheet(75/102 Pages) STMICROELECTRONICS

75 / 102 page

LRIS2K

Kill

75/102

Kill

On receiving the Kill command, in the Addressed mode only, the LRIS2K compares the kill

code with the data contained in the request and reports whether the operation was

successful in the request. The Option_flag is supported. If the command is received in the

Non Addressed or the Selected mode, the LRIS2K returns an error response.

During the comparison cycle equal to tW, there should be no modulation (neither 100% nor

10%). Otherwise, the LRIS2K may not match the kill code correctly. The tW time is equal to

t1nom + 18 × 302 µs. After a successful Kill command, the LRIS2K is deactivated and does

not interpret any other command.

Request parameters:

●

UID (optional)

●

Kill code

Response parameter:

●

No parameter. The response is send back after the writing cycle

Response parameter:

●

Error code as Error_flag is set:

–

0Fh: other error

–

14h: block not locked

Table 66.

Kill request format

Request

SOF

Request

_flags

Kill

IC Mfg

Code

UID

Kill

access

Kill code

CRC16

Request

EOF

8 bits

A6h

0x02

64 bits

00h

32 bits

16bits

Table 67.

Kill response format when Error_flag is NOT set

Response

SOF

Response_flags

CRC16

Response

EOF

8 bits

16 bits

Table 68.

Kill response format when Error_flag is set

Response

SOF

Response_

Flags

Error code

CRC16

Response

EOF

8 bits

16 bits

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