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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ST25DV64K 데이터시트(PDF) 144 Page - STMicroelectronics |
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ST25DV64K 데이터시트(HTML) 144 Page - STMicroelectronics |
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144 / 220 page  RF operations ST25DV04K ST25DV16K ST25DV64K 144/220 DocID027603 Rev 4 Note: Please refer to Table 8: System configuration memory map for details on register addresses. Request parameters: • System configuration register pointer • UID (optional) Response parameters: • One byte of data: system configuration register Response parameter: • Error code as Error_flag is set – 02h: command not recognized – 03h: the option is not supported – 10h: block not available – 0Fh: error with no information given Figure 55. Read Configuration frame exchange between VCD and ST25DVxxx 7.6.27 Write Configuration The Write Configuration command is used to write static system configuration register. The Write Configuration must be preceded by a valid presentation of the RF configuration password (00) to open the RF configuration security session. On receiving the Write Configuration command, the ST25DVxxx writes the data contained in the request to the system configuration register at the Pointer address and reports whether the write operation was successful in the response or not. When the Option_flag is set, wait for EOF to respond. The Inventory_flag is not supported. Table 145. Read Configuration response format when Error_flag is NOT set Response SOF Response_flags Register value CRC16 Response EOF - 8 bits 8 bits 16 bits - Table 146. Read Configuration response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF - 8 bits 8 bits 16 bits - VCD SOF Read Configuration request EOF ST25DVxxx <-t1-> SOF Read Configuration response EOF |
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