ST25DV64K datasheet(86/200 Pages) STMICROELECTRONICS

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Table 107. Block security status

Reserved for future use.

All at 0.

0: Current block not locked

1: Current block locked

Table 108. Read Single 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 not supported

–

0Fh: error with no information

–

10h: the specified block is not available

–

15h: the specified block is read-protected

Figure 35. Read Single Block frame exchange between VCD and ST25DVxxx

SOF

Read Single Block

request

VCD

ST25DVxxx

EOF

SOF

Read Single Block

response

EOF

7.6.7

Extended Read Single Block

On receiving the Extended Read Single Block command, the ST25DVxxx reads the requested block and sends

back its 32-bit value in the response.

When the Option_flag is set, the response includes the Block Security Status.

Block number is coded on 2 Bytes so all memory blocks of ST25DV16K-xx and

ST25DV64K-xx can be addressed using this command.

Table 109. Extended Read Single Block request format

Request SOF

Request_flags

Extended Read Single Block

UID (1)

Block number

CRC16

Request EOF

8 bits

30h

64 bits

16 bits

1. This field is optional.

Request parameters:

•

Request flags

•

UID (optional)

•

Block number (from LSB byte to MSB byte)

ST25DV04K ST25DV16K ST25DV64K

RF commands

DS10925 - Rev 9

page 86/200

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