LRIS64K datasheet(59/100 Pages) STMICROELECTRONICS

59 / 100 page

LRIS64K

Commands codes

Doc ID 15336 Rev 11

59/100

24.4

Write Single Block

On receiving the Write Single Block command, the LRIS64K writes the data contained in the

request to the requested block and reports whether the write operation was successful in

the response. The Protocol_extention_flag should be set to 1 for the LRIS64K to operate

correctly. If the Protocol_extention_flag is at 0, the LRIS64K answers with an error code.

The Option_flag is supported.

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

the LRIS64K may not program correctly the data into the memory. The Wt time is equal to

t1nom + 18 × 302 µs.

Request parameters:

●

UID (optional)

●

Block number

●

Data

Response parameter:

●

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

Response parameter:

●

Error code as Error_flag is set:

–

03h: the option is not supported

–

0Fh: error with no information given

–

10h: the specified block is not available

–

12h: the specified block is locked and its contents cannot be changed.

–

13h: the specified block was not successfully programmed

Table 35.

Write Single Block request format

Request

SOF

Request_

flags

Write

Single

Block

UID(1)

Gray means that the field is optional.

Block

number

Data

CRC16

Request

EOF

8 bits

21h

64 bits

16 bits

32 bits

16 bits

Table 36.

Write Single Block response format when Error_flag is NOT set

Response SOF

Response_flags

CRC16

Response EOF

8 bits

16 bits

Table 37.

Write Single Block response format when Error_flag is set

Response

SOF

Response_

flags

Error code

CRC16

Response

EOF

8 bits

16 bits

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