ST25DV64KC datasheet(90/203 Pages) STMICROELECTRONICS

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Table 113. Extended Read Single Block response format when Error_flag is NOT set

Response SOF

Response_flags

Block security status (1)

Data

CRC16

Response EOF

8 bits

32 bits

16 bits

1. This field is optional.

Response parameters:

•

Block security status if Option_flag is set (see Table 114)

•

Four bytes of block data

Table 114. Block security status

Reserved for future use.

All at 0.

0: Current block not locked

1: Current block locked

Table 115. Extended Read Single 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 not supported or no response

–

0Fh: error with no information

–

10h: the specified block is not available

–

15h: the specified block is read-protected

Figure 42. Extended Read Single Block frame exchange between VCD and ST25DVxxKC

SOF

Extended Read

Single Block

request

VCD

ST25DVxxKC

EOF

SOF

Extended Read

Single Block

response

EOF

7.6.8

Write Single Block

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

targeted block and reports whether the write operation was successful in the response. When the Option_flag is

set, wait for EOF to respond. The Inventory_flag must be set to 0.

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 + N × 302

µs (N is an integer).

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

using this command.

ST25DV04KC ST25DV16KC ST25DV64KC

RF commands

DS13519 - Rev 3

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