ST25DV64K datasheet(110/197 Pages) STMICROELECTRONICS

110 / 197 page

Figure 53. Get Multiple Block Security Status frame exchange between VCD and ST25DVxxx

SOF

Get Multiple Block

Security request

status

VCD

ST25DVxxx

EOF

SOF

Get Multiple Block

Security response

status

EOF

7.6.25

Extended Get Multiple Block Security Status

When receiving this command, the device sends back the security status for each address block: 0 when the

block is writable, 1 when block is locked for writing. The block security statuses are defined by the area security

status. The blocks are numbered from 00h up to the maximum memory block number in the request, and the

value is minus one (–1) in the field. For example, a value '06' in the “Number of blocks” field requests to return the

security status of seven blocks.

This command does not return an error if number of blocks overlap areas or overlap the end of the user memory.

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

addressed using this command.

The Option_flag is not supported. The Inventory_flag must be set to 0.

Table 177. Extended Get Multiple Block Security Status request format

Request

SOF

Request_flags

Extended Get

Multiple Block

Security

Status

UID (1)

First block

number

Number of

blocks

CRC16

Request

EOF

8 bits

3Ch

64 bits

16 bits

1. This field is optional.

Request parameter:

•

Request flags

•

UID (optional)

•

First block number (from LSB to MSB)

•

Number of blocks (from LSB to MSB)

Table 178. Extended Get Multiple Block Security Status response format when Error_flags NOT set

Response SOF

Response_flags

Block security status

CRC16

Response EOF

8 bits

8 bits (1)

16 bits

1. Repeated as needed.

Response parameters:

•

Block security status

Table 179. Block security status

Reserved for future use

All at 0

0: Current block not locked

1: Current block locked

ST25DV04K ST25DV16K ST25DV64K

RF commands

DS10925 - Rev 11

page 110/197

ST25DV64K Scheda tecnica(PDF) 110 Page - STMicroelectronics

ST25DV64K Scheda tecnica(HTML) 110 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Scheda tecnica Scarica

Link URL