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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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ST25DV64K Scheda tecnica(PDF) 99 Page - STMicroelectronics |
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ST25DV64K Scheda tecnica(HTML) 99 Page - STMicroelectronics |
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99 / 197 page  7.6.18 Write AFI On receiving the Write AFI request, the ST25DVxxx programs the 8-bit AFI 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 AFI value into the memory. The Wt time is equal to t1nom + N × 302 µs (N is an integer). Table 145. Write AFI request format Request SOF Request_flags Write AFI UID (1) AFI CRC16 Request EOF - 8 bits 27h 64 bits 8 bits 16 bits - 1. This field is optional. Request parameter: • Request flags • UID (optional) • AFI Table 146. Write AFI response format when Error_flag is NOT set Response SOF Response_flags CRC16 Response EOF - 8 bits 16 bits - Response parameter: • No parameter Table 147. Write AFI 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 is not supported – 0Fh: error with no information given – 12h: the specified block is locked and its contents cannot be changed – 13h: the specified block was not successfully programmed ST25DV04K ST25DV16K ST25DV64K RF commands DS10925 - Rev 11 page 99/197 |
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