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ST25DV04KC Datasheet(PDF) 103 Page - STMicroelectronics |
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ST25DV04KC Datasheet(HTML) 103 Page - STMicroelectronics |
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103 / 203 page  Figure 52. Reset to Ready frame exchange between VCD and ST25DVxxKC SOF Reset to Ready request VCD ST25DVxxKC EOF SOF Reset to Ready response EOF t1 7.6.18 Write AFI On receiving the Write AFI request, the ST25DVxxKC 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 ST25DVxxKC 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 148. 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 149. 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 150. Write AFI response format when Error_flag is set Response SOF Response_ flags Error code CRC16 Response EOF - 8 bits 8 bits 16 bits - ST25DV04KC ST25DV16KC ST25DV64KC RF commands DS13519 - Rev 3 page 103/203 |
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