ST25TV16K datasheet(40/87 Pages) STMICROELECTRONICS

40 / 87 page

1. This field is optional.

2. Repeated as needed.

Response parameters:

•

Block security status if Option_flag is set (see Table 63. Block security status)

•

N blocks of data

Table 63. Block security status

Reserved for future use.

All at 0.

0: Current block not locked

1: Current block locked

Table 64. Read 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

–

15h: the specified block is read-protected

Figure 15. Read Multiple Block frame exchange between VCD and ST25TV16K/64K

SOF

Read Multiple

Block request

VCD

ST25TV16K/64K

EOF

SOF

Read Multiple

Block response

EOF

6.4.13

Extended Read Multiple Blocks

When receiving the Extended Read multiple block command, the ST25TV16K/64K reads the selected blocks and

sends back their value in multiples of 32 bits in the response. The blocks are numbered from 00h to 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 at 2047 assuming that

they are all located in the same area. If the number of blocks overlaps areas or overlaps the end of user memory,

the ST25TV16K/64K returns an error code. When the Option_flag is set, the response returns the Block Security

Status.

The Inventory_flag must be set to 0.

Block number is coded on 2 Bytes so all memory blocks of ST25TV16K/64K can be addressed using this

command.

ST25TV16K ST25TV64K

RF Commands

DS11489 - Rev 9

page 40/87

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