ST25DV64KC datasheet(98/203 Pages) STMICROELECTRONICS

98 / 203 page

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

–

15h: the specified block is read-protected

Figure 48. Extended Read Multiple Block frame exchange between VCD and ST25DVxxKC

SOF

Extended

Read Multiple

Block request

VCD

ST25DVxxKC

EOF

SOF

Extended

Read Multiple

Block response

EOF

7.6.14

Write Multiple Blocks

On receiving the Write Multiple Block command, the ST25DVxxKC writes the data contained in the request to

the requested blocks, and reports whether the write operation were successful in the response. ST25DVxxKC

supports up to 4 blocks, data field must be coherent with the number of blocks to program.

The number of blocks in the request is one less than the number of blocks that the ST25DVxxKC shall write (for

instance Number of block = 2 means 3 blocks to be written).

If some blocks overlaps areas, or overlap end of user memory, the ST25DVxxKC 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 ST25DVxxKC 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, it is

function of Nb number of blocks to be programmed).

The Inventory_flag must be set to 0.

Block number is coded on 1 Byte and only first 256 blocks of ST25DV16KC and ST25DV64KC can be addressed

using this command.

Table 136. Write Multiple Block request format

Request

SOF

Request_flags

Write

Multiple

Block

UID (1)

First Block

number

Number of

block (2)

Data

CRC16

Request

EOF

8 bits

24h

64 bits

8 bits

Block length

(3)

16 bits

1. This field is optional.

2. The number of blocks in the request is one less than the number of blocks that the VICC shall write.

3. Repeated as needed

Request parameters:

•

Request flags

•

UID (optional)

•

First Block number

•

Number of blocks

•

Data

ST25DV04KC ST25DV16KC ST25DV64KC

RF commands

DS13519 - Rev 3

page 98/203

ST25DV64KC Scheda tecnica(PDF) 98 Page - STMicroelectronics

ST25DV64KC Scheda tecnica(HTML) 98 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