ST25DV64KC datasheet(133/203 Pages) STMICROELECTRONICS

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Response parameter:

•

Error code as Error_flag is set:

–

02h: command not recognized

–

0Fh: error with no information given

–

03h: the option is not supported

–

10h: block address not available

–

15h: block read-protected

Figure 74. Fast Read Multiple Block frame exchange between VCD and ST25DVxxKC

SOF

Fast Read

Multiple block

request

VCD

ST25DVxxKC

EOF

SOF

Fast Read

Multiple block

response

EOF

7.6.40

Fast Extended Read Multiple Block

On receiving the Fast Extended Read Multiple Block command, the ST25DVxxKC reads the selected blocks and

sends back their value in multiples of 32 bits in the response. The blocks are numbered from 00h to up to the

last block of memory in the request and the value is minus one (–1) in the field. For example, if the “Number of

blocks” field contains the value 06h, seven blocks are read. The maximum number of blocks is fixed to 2047. Fast

Extended Read Multiple Blocks command can cross areas borders, and returns all blocks until reaching a non

readable block (block read protected or out of memory).

When the Option_flag is set, the response includes the Block Security Status. The data rate of the response is

multiplied by 2.

The subcarrier_flag should be set to 0, otherwise the ST25DVxxKC answers with an error code.

The Inventory_flag must be set to 0.

Block number is coded on 2 Bytes so all memory blocks of ST25DV16KC and ST25DV64KC can be addressed

using this command.

Table 228. Fast Extended Read Multiple Block request format

Request

SOF

Request_flags

Fast Extended

Read Multiple

Block

IC Mfg

code

UID (1)

First block

number

Block

Number

CRC16

Request

EOF

8 bits

C5h

02h

64 bits 16 bits

16 bits

1. This field is optional.

Request parameters:

•

Request flag

•

UID (Optional)

•

First block number (from LSB byte to MSB byte)

•

Number of blocks (from LSB byte to MSB byte)

ST25DV04KC ST25DV16KC ST25DV64KC

RF commands

DS13519 - Rev 3

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