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ST25DV04K Datasheet(PDF) 101 Page - STMicroelectronics |
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ST25DV04K Datasheet(HTML) 101 Page - STMicroelectronics |
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101 / 197 page  • Error code as Error_flag is set – 03h: command option is not supported – 0Fh: error with no information given – 11h: the specified block is already locked and thus cannot be locked again – 14h: the specified block was not successfully locked Figure 48. Lock AFI frame exchange between VCD and ST25DVxxx SOF Lock AFI request VCD EOF ST25DVxxx t1 SOF Lock AFI response EOF SOF EOF ST25DVxxx Wt Lock sequence when error Lock AFI response 7.6.20 Write DSFID On receiving the Write DSFID request, the ST25DVxxx programs the 8-bit DSFID value to its memory. 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 ST25DVxxx may not write correctly the DSFID value in memory. The Wt time is equal to t1nom + N × 302 µs (N is an integer). Table 151. Write DSFID request format Request SOF Request_flags Write DSFID UID (1) DSFID CRC16 Request EOF - 8 bits 29h 64 bits 8 bits 16 bits - 1. This field is optional. Request parameter: • Request flags • UID (optional) • DSFID Table 152. Write DSFID response format when Error_flag is NOT set Response SOF Response_flags CRC16 Response EOF - 8 bits 16 bits - Response parameter: • No parameter ST25DV04K ST25DV16K ST25DV64K RF commands DS10925 - Rev 11 page 101/197 |
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