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ST25DV64K Scheda tecnica(PDF) 129 Page - STMicroelectronics |
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ST25DV64K Scheda tecnica(HTML) 129 Page - STMicroelectronics |
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129 / 220 page ![]() DocID027603 Rev 4 129/220 ST25DV04K ST25DV16K ST25DV64K RF operations 219 Request parameter: • UID (optional) Response parameter: • No parameter Response parameter: • Error code as Error_flag is set: – 03h: the option is not supported – 0Fh: error with no information given 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 106. Reset to Ready response format when Error_flag is NOT set Response SOF Response_flags CRC16 Response EOF - 8 bits 16 bits - Table 107. Reset to ready response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF - 8 bits 8 bits 16 bits - Figure 46. Reset to Ready frame exchange between VCD and ST25DVxxx VCD SOF Reset to Ready request EOF ST25DVxxx <-t1-> SOF Reset to Ready response EOF |
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