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ST25DV04K Datasheet(PDF) 92 Page - STMicroelectronics |
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ST25DV04K Datasheet(HTML) 92 Page - STMicroelectronics |
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92 / 200 page  • No parameter Table 124. Extended Lock block response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF - 8 bits 8 bits 16 bits - 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 40. Extended Lock block frame exchange between VCD and ST25DVxxx SOF Extended Lock block request VCD EOF ST25DVxxx t1 SOF Extended Lock block response EOF SOF Extended Lock block response EOF ST25DVxxx Wt Lock sequence when error 7.6.12 Read Multiple Blocks When receiving the Read Multiple Block command, the ST25DVxxx 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 ST25DVxxx 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 ST25DV16K-xx and ST25DV64K-xx can be addressed using this command. Table 125. 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. The field is optional. Request parameters: • Request flags • UID (optional) • First block number ST25DV04K ST25DV16K ST25DV64K RF commands DS10925 - Rev 9 page 92/200 |
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