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ST25DV64K 数据表(PDF) 106 Page - STMicroelectronics |
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ST25DV64K 数据表(HTML) 106 Page - STMicroelectronics |
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106 / 200 page  7.6.22 Get System Info When receiving the Get System Info command, the ST25DVxxx sends back its information data in the response. The Option_flag is not supported. The Inventory_flag must be set to 0. The Get System Info can be issued in both Addressed and Non Addressed modes. Table 157. Get System Info request format Request SOF Request_flags Get System Info UID (1) CRC16 Request EOF - 8 bits 2Bh 64 bits 16 bits - 1. This field is optional. Request parameter: • Request flags • UID (optional) Table 158. Get System Info response format Error_flag is NOT set Device Response SOF Response flags Information flags UID DSFID AFI Mem. Size IC ref. CRC16 Response EOF ST25DV64K-xx ST25DV16K-xx - 00h 0Bh 64 bits 8 bits 8 bits NA (1) 26h 16 bits - ST25DV04K-xx 0Fh 037Fh 24h 1. Field not present in this configuration Response parameters: • Information flags set to 0Bh/0Fh. DSFID, AFI and IC reference fields are present. • UID code on 64 bits • DSFID value • AFI value • MemSize: Block size in bytes and memory size in number of blocks (only present for ST25DV04K-xx configurations) Table 159. Memory size MSB LSB 16 14 13 9 8 1 RFU Block size in byte Number of blocks 0h 03h 7Fh • ST25DVxxx IC reference: the 8 bits are significant. Table 160. Get System Info response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF - 01h 8 bits 16 bits - Response parameter: • Error code as Error_flag is set: – 03h: Option not supported – 0Fh: error with no information given ST25DV04K ST25DV16K ST25DV64K RF commands DS10925 - Rev 9 page 106/200 |
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