ST25TV16K datasheet(39/87 Pages) STMICROELECTRONICS

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Response parameter:

•

Error code as Error_flag is set

–

03h: command option not supported

–

10h: block not available

–

11h: the specified block is already locked and thus cannot be locked again

–

14h: the specified block was not successfully locked

Figure 14. Extended Lock block frame exchange between VCD and ST25TV16K/64K

SOF

Extended Lock

block request

VCD

EOF

ST25TV16K/64K

SOF

Extended Lock

block response

EOF

SOF

Extended Lock

block response

EOF

ST25TV16K/64K

Write sequence

when error

6.4.12

Read Multiple Blocks

When receiving the 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 FFh 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 256 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 1 Byte and only first 256 blocks of ST25TV16K/64K can be addressed using this

command.

Table 61. Read Multiple Block request format

Request SOF Request_flags

Read Multiple

Block

UID (1)

First block

number

Number of blocks CRC16 Request EOF

8 bits

23h

64 bits 8 bits

8 bits

16 bits

1. This field is optional.

Request parameters:

•

Request flags

•

UID (optional)

•

First block number

•

Number of blocks

Table 62. Read Multiple Block response format when Error_flag is NOT set

Response SOF

Response_

flags

Block security status (1)

Data

CRC16

Response EOF

8 bits

8 bits (2)

32 bits(2)

16 bits

ST25TV16K ST25TV64K

RF Commands

DS11489 - Rev 9

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