ST25DV04K datasheet(94/197 Pages) STMICROELECTRONICS

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Table 134. Write Multiple Block response format when Error_flag is NOT set

Response SOF

Response_flags

CRC16

Response EOF

8 bits

16 bits

Response parameter:

•

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

Table 135. Write Multiple Block response format when Error_flag is set

Response SOF

Response_flags

Error code

CRC16

Response EOF

8 bits

16 bits

Response parameter:

•

Error code as Error_flag is set:

–

03h: command 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

Figure 43. Write Multiple Block frame exchange between VCD and ST25DVxxx

SOF

Write Multiple

block request

VCD

EOF

ST25DVxxx

SOF

Write Multiple

block response

EOF

SOF

Write Multiple

block response

EOF

ST25DVxxx

Write sequence

when error

7.6.15

Extended Write Multiple Blocks

On receiving this command, the device writes the data contained in the request to the targeted blocks and reports

whether the write operation was successful in the response. ST25DVxxx supports up to four blocks, data field

must be coherent with number of blocks to program.

If some blocks overlap, or overlap end of user memory, the device returns an error code, and none of the blocks

are programmed.

When the Option_flag is set, wait for EOF to respond. During the RF write cycle Wt, there should be no

modulation (neither 100% nor 10%), otherwise the ST25DVxxx may not program correctly the data into the

memory. The Wt time is equal to t1nom + m × 302 μs < 20 ms (m is an integer function of Nb number of blocks to

be programmed).

The inventory_flag must be set to 0.

Block number is coded on 2 bytes, so all memory blocks of ST25DV16K-xx and ST25DV64K-xx can be

addressed using this command.

ST25DV04K ST25DV16K ST25DV64K

RF commands

DS10925 - Rev 11

page 94/197

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